Tüm alıştırma soruları

5215 soru

Tüm türler5,215 Çoktan seçmeli2,665 Çoklu seçim6 Doğru / Yanlış260 Sayısal512 Eşleştirme930 Sıralama396 Boşluk doldurma397 Kısa cevap49

Soru 2681Soru →

An independent plumbing contractor is purchasing a bulk order of copper piping. The standard retail price for the order is $600.00. The supply warehouse offers a 25% trade discount for licensed contractors. After the discount is applied, a 6% local sales tax is added to the purchase. Calculate the final total cost of the order.

Aşağıdaki boşlukları doldurun

The final total cost for the copper piping, including tax, is $.

Cevabı ve açıklamayı göster

Cevap

477.00

The correct answer is found by sequentially calculating the discount and then the tax. First, the 25% discount on

600.00 removes

150.00, lowering the price to

450.00. Then, the 6% sales tax is calculated strictly on that

450.00 balance, which adds

27.00. The final sum is

450.00 plus

27.00, which equals

477.00.

Adım Adım Çözüm

Calculate the discount amount by finding 25% of $600.00.

$150.00

This determines how much money is subtracted from the original retail price.

Subtract the discount amount from the original retail price to find the discounted price.

600.00 -

150.00 = $450.00

This provides the base amount upon which the sales tax will be calculated.

Calculate the sales tax by finding 6% of the discounted price.

450.00 \times 0.06 =

27.00

Sales tax must be applied to the discounted sale price, not the original retail price.

Add the sales tax to the discounted price to find the final total cost.

450.00 +

27.00 = $477.00

This gives the total amount the contractor must pay.

Anahtar Kavram

Successive Percentages: Applying a discount to an original price, followed by applying a tax rate to the new discounted price.

Soru 2682Soru →

Solve the following word problem and enter your final answer as a simplified mixed number or improper fraction (e.g., 2 3/4 or 11/4).

Aşağıdaki boşlukları doldurun

An electrician starts a project with a spool containing

20 \frac{4}{5}

meters of copper wire. They use

6 \frac{1}{3}

meters for the kitchen circuits and

8 \frac{1}{2}

meters for the living room outlets. After these installations, there are meters of wire remaining on the spool.

Cevabı ve açıklamayı göster

Cevap

5 29/30

To find the remaining wire, the total length used must be subtracted from the original length. First, the used lengths (

6 \frac{1}{3}

and

8 \frac{1}{2}

) are added by finding a common denominator of 6, totaling

14 \frac{5}{6}

meters. Next, this total is subtracted from the original

20 \frac{4}{5}

meters. A common denominator of 30 is used, converting the expression to

20 \frac{24}{30} - 14 \frac{25}{30}

. Because

\frac{24}{30}

is smaller than

\frac{25}{30}

, regrouping is required:

20 \frac{24}{30}

becomes

19 \frac{54}{30}

. Subtracting

14 \frac{25}{30}

leaves exactly

5 \frac{29}{30}

meters.

Adım Adım Çözüm

Find the total amount of wire used by adding the lengths used for the kitchen and living room.

6 \frac{1}{3} + 8 \frac{1}{2} = 14 \frac{5}{6}

To determine how much wire is left, we first need to know the total amount taken from the spool. This requires finding a common denominator (6) for the fractions

\frac{1}{3}

and

\frac{1}{2}

Set up the subtraction to find the remaining wire on the spool.

20 \frac{4}{5} - 14 \frac{5}{6}

Subtracting the total used from the initial amount will give the remaining balance.

Find a common denominator to perform the subtraction.

The common denominator for 5 and 6 is 30. We convert the fractions:

20 \frac{24}{30} - 14 \frac{25}{30}

Fractions must have the same denominator before they can be subtracted.

Borrow from the whole number to allow subtraction of the fractions.

Borrow 1 from 20 to get 19, and add

\frac{30}{30}

\frac{24}{30}

, resulting in

19 \frac{54}{30}

. Then subtract:

19 \frac{54}{30} - 14 \frac{25}{30} = 5 \frac{29}{30}

Since

\frac{24}{30}

is smaller than

\frac{25}{30}

, regrouping is required to complete the subtraction.

Anahtar Kavram

Adding and subtracting mixed numbers with unlike denominators, including regrouping (borrowing).

Soru 2683Soru →

Fill in the blank with a word that most nearly matches the meaning of the bold term, ensuring you avoid selecting an opposite meaning: Which word best completes the sentence to preserve the original meaning of the term in bold?

Aşağıdaki boşlukları doldurun

The aviation safety board enforced stringent inspection standards following the technical audit; maintaining these requirements was essential to prevent mechanical failures during flight operations.

Cevabı ve açıklamayı göster

Cevap

The blank is correctly filled with 'strict' (or 'rigorous'), which serves as an exact synonym for 'stringent'.

The adjective 'stringent' means rigorously binding, strict, or exacting. In the context of regulatory flight safety standards enforced to prevent failures, 'strict' and 'rigorous' accurately complete the sentence by sustaining the meaning of mandatory, uncompromising rules.

Adım Adım Çözüm

Analyze the bold term 'stringent' and evaluate surrounding context clues ('enforced', 'inspection standards', 'prevent mechanical failures').

Determine that 'stringent' describes regulations that are rigorous, precise, and firmly binding.

Identifying the contextual requirement of tightly controlled standards reveals the necessary synonym.

Differentiate the target synonym from common antonym traps.

Recognize that 'lenient' and 'lax' are direct antonyms, whereas 'strict' or 'rigorous' matches the intended meaning.

Antonym distractor elimination ensures that words associated by contrast are not mistakenly used in place of true equivalents.

Substitute the synonym into the sentence blank to verify grammatical and semantic coherence.

The phrase 'maintaining these strict requirements' accurately preserves the original sentence meaning.

Direct substitution verifies that the tone and semantic definition remain consistent.

Anahtar Kavram

Identifying precise synonyms in contextual sentences while eliminating antonym traps

Tahmini Süre:45s

Soru 2684Soru →

IMPEDE most nearly means which of the following?

assist

obstruct

impel

inspect

Cevabı ve açıklamayı göster

Cevap: obstruct

Cevap

obstruct

The word IMPEDE means to delay, hinder, or prevent movement or progress. The term 'obstruct' is the direct synonym, sharing the meaning of blocking or hindering action.

Adım Adım Çözüm

Determine the definition and grammatical function of the target word IMPEDE.

The word IMPEDE is a verb that means to delay, hinder, or block the movement or progress of someone or something.

Establishing the precise denotation is necessary to identify an exact synonym.

Evaluate the answer choices to identify the term that shares this definition.

The verb 'obstruct' means to block, clog, or get in the way of progress, which directly matches IMPEDE.

Matching equivalent definitions confirms the correct synonym choice.

Anahtar Kavram

Identifying direct synonyms for isolated vocabulary words

Tahmini Süre:30s

Soru 2685Soru →

A field biologist records the taxonomic classifications of four newly cataloged animal specimens:

• Specimen W and Specimen X share the same class, but belong to different orders.
• Specimen X and Specimen Y share the same genus, but represent different species.
• Specimen Y and Specimen Z share the same family, but belong to different genera.

Based on the Linnaean taxonomic hierarchy, which pair of specimens shares the greatest number of taxonomic categories and is therefore most closely related?

Specimen W and Specimen X

Specimen X and Specimen Y

Specimen Y and Specimen Z

Specimen W and Specimen Z

Cevabı ve açıklamayı göster

Cevap: Specimen X and Specimen Y

Cevap

Specimen X and Specimen Y share the greatest number of taxonomic categories because genus is the most specific shared rank among all pairs.

In the Linnaean classification system (Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species), groups are arranged hierarchically from broadest to most specific. If two organisms belong to the same genus, they necessarily share every broader rank above it (family, order, class, phylum, kingdom, domain). Thus, the pair sharing a genus shares seven taxonomic levels, which is more than pairs sharing only a family or class.

Adım Adım Çözüm

Recall the standard Linnaean classification hierarchy from broadest to most specific.

Domain → Kingdom → Phylum → Class → Order → Family → Genus → Species.

Taxonomic ranks are nested; organisms sharing a lower rank must share all higher ranks.

Evaluate the most specific shared taxonomic rank for each evaluated pair.

Specimens W and X share up to Class; Specimens Y and Z share up to Family; Specimens X and Y share up to Genus; Specimens W and Z share up to Class.

Identifying the deepest level of shared classification determines the total number of common taxonomic categories.

Compare the specificity of the shared ranks.

Genus is more specific than Family, Order, and Class.

Organisms sharing a genus share Domain, Kingdom, Phylum, Class, Order, Family, and Genus (7 shared ranks), indicating the closest evolutionary relationship.

Anahtar Kavram

Linnaean hierarchy rank ordering and nested taxonomic relationships

Tahmini Süre:1m 30s

Soru 2686Soru →

The domestic dog (*Canis lupus familiaris*) and the coyote (*Canis latrans*) belong to the same genus, whereas the red fox (*Vulpes vulpes*) belongs to a different genus within the family Canidae. Which of the following taxonomic ranks represents the most specific classification level shared by all three animals?

Genus

Family

Order

Species

Cevabı ve açıklamayı göster

Cevap: Family

Cevap

Family

Biological classification follows the hierarchy: Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species. Because the domestic dog and coyote belong to the genus Canis while the red fox belongs to the genus Vulpes, they diverge at the genus level. Since all three are members of the family Canidae, Family is the most specific taxonomic rank common to all three organisms.

Adım Adım Çözüm

Recall the hierarchical order of Linnaean classification from broadest to most specific.

Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species.

Establishing the sequence allows determination of which shared rank is the most specific.

Analyze the classification levels provided in the scenario for the three animals.

The dog and coyote share the genus Canis, but the red fox belongs to the genus Vulpes. All three belong to the family Canidae.

Because they diverge at the genus level, their most specific common classification must be one level higher in the hierarchy.

Identify the shared rank that is lowest (most specific) in the hierarchy.

Family is more specific than Order, Class, Phylum, Kingdom, or Domain.

Family is the lowest common rank before the organisms split into separate genera.

Anahtar Kavram

Linnaean taxonomic hierarchy and specificity of shared taxa

Tahmini Süre:1m 0s

Soru 2687Soru →

In guinea pigs, black fur ( $B$ ) is dominant over white fur ( $b$ ). If two heterozygous black guinea pigs ( $Bb$ ) are crossed, what percentage of their offspring is expected to have black fur?

25%

50%

75%

100%

Cevabı ve açıklamayı göster

Cevap: 75%

Cevap

75% of the offspring are expected to have black fur.

Crossing two heterozygous parents (

Bb \times Bb

) produces genotypes in a 1 BB : 2 Bb : 1 bb ratio. Because black fur is dominant, both

BB

(25%) and

Bb

(50%) display black fur, resulting in a total expected phenotype of 75% black fur.

Adım Adım Çözüm

Identify the parental genotypes and set up the monohybrid cross.

The cross is

Bb \times Bb

, where each parent contributes either a

B

b

allele.

Both parents are heterozygous, carrying one dominant allele and one recessive allele.

Construct a

2 \times 2

Punnett square to determine offspring genotype probabilities.

Genotype distribution is

1\ BB

(25%),

2\ Bb

(50%), and

1\ bb

(25%).

Combining alleles from both parents yields four equally likely outcomes.

Determine which genotypes result in the black fur phenotype.

Both

BB

(25%) and

Bb

(50%) produce black fur, totaling

25\% + 50\% = 75\%

The dominant allele (

B

) masks the recessive allele (

b

), so both homozygous dominant and heterozygous genotypes express the dominant trait.

Anahtar Kavram

Monohybrid cross and dominant versus recessive phenotypic ratios

Tahmini Süre:1m 0s

Soru 2688Soru →

During a laboratory investigation, a plant cell and an animal cell are both placed into a hypotonic solution. While the animal cell swells and lyses (bursts), the plant cell remains structurally intact and builds internal turgor pressure. Which cellular structure prevents the plant cell from bursting, and which organelle maintains the internal hydrostatic pressure that pushes against it?

The plasma membrane prevents bursting, while the chloroplast maintains turgor pressure.

The cell wall prevents bursting, while the large central vacuole maintains turgor pressure.

The central vacuole prevents bursting, while the cell wall absorbs excess intracellular water.

The cell wall prevents bursting, while the mitochondrion generates osmotic water pressure.

Cevabı ve açıklamayı göster

Cevap: The cell wall prevents bursting, while the large central vacuole maintains turgor pressure.

Cevap

The cell wall prevents the plant cell from bursting, while the large central vacuole maintains turgor pressure.

Plant cells contain a rigid outer cell wall composed of cellulose that prevents the cell from bursting when water rushes in during exposure to a hypotonic environment. Inside the cell, the large central vacuole fills with water and exerts outward hydrostatic pressure (turgor pressure) against the cell wall, keeping the plant upright and firm.

Adım Adım Çözüm

Analyze the behavior of cells in a hypotonic environment

Water enters both plant and animal cells via osmosis due to the solute gradient.

Hypotonic external solutions cause a net influx of water into the cytoplasm.

Identify the structural adaptation preventing lysis in plant cells

The rigid cell wall composed of cellulose withstands internal osmotic pressure.

Animal cells possess only a flexible plasma membrane and burst under excessive influx.

Identify the organelle responsible for storing water and generating turgor pressure

The large central vacuole accumulates water, pushing cytoplasm outward against the cell wall.

This hydrostatic interaction maintains plant rigidity and structural uprightness.

Anahtar Kavram

Plant versus animal cellular structural adaptations under osmotic pressure

Tahmini Süre:1m 30s

Soru 2689Soru →

Which organelle is found in plant cells and functions as the primary site of photosynthesis?

Ribosome

Chloroplast

Mitochondrion

Endoplasmic reticulum

Cevabı ve açıklamayı göster

Cevap: Chloroplast

Cevap

Chloroplast

Chloroplasts are double-membrane organelles found in plants and algae that contain the green pigment chlorophyll. They absorb solar energy to convert carbon dioxide and water into glucose through the process of photosynthesis.

Adım Adım Çözüm

Identify the cellular process and target cell type in the question

The question asks for the organelle responsible for photosynthesis in plant cells.

Pinpointing the specific biochemical process helps narrow down the organelle's specialized function.

Match the organelle to photosynthesis

Chloroplasts contain chlorophyll pigments that absorb sunlight to synthesize glucose from water and carbon dioxide.

Chloroplasts are uniquely adapted for photosynthesis and are characteristic of plant cells rather than animal cells.

Anahtar Kavram

Plant Cell Organelles and Photosynthesis

Tahmini Süre:30s

Soru 2690Soru →

In guinea pigs, black fur ( $B$ ) is dominant over white fur ( $b$ ). If two heterozygous black guinea pigs ( $Bb$ ) produce an offspring with black fur, what is the probability that this offspring is heterozygous?

\frac{1}{2}

\frac{2}{3}

\frac{3}{4}

\frac{1}{4}

Cevabı ve açıklamayı göster

Cevap: $\frac{2}{3}$

Cevap

\frac{2}{3}

A monohybrid cross of two heterozygous parents (

Bb \times Bb

) yields four equally likely outcomes:

1\,BB

2\,Bb

, and

1\,bb

. Because the problem specifies that the offspring has black fur, the homozygous recessive genotype (

bb

) is excluded. Among the remaining three dominant outcomes (

1\,BB

and

2\,Bb

), two are heterozygous, giving a probability of

\frac{2}{3}

Adım Adım Çözüm

Determine all possible genotypes from crossing two heterozygous individuals (

Bb \times Bb

The genotypic ratio of the total offspring is

1\,BB : 2\,Bb : 1\,bb

Each heterozygous parent contributes either a dominant allele (

B

) or a recessive allele (

b

) with equal likelihood.

Apply the given condition that the offspring displays black fur (the dominant phenotype).

The recessive genotype (

bb

) is ruled out, restricting the sample space to

1\,BB

and

2\,Bb

(a total of

3

possible outcomes).

A white guinea pig (

bb

) cannot be the offspring in question because the problem states the offspring has black fur.

Calculate the probability that this black offspring possesses the heterozygous genotype (

Bb

\text{Probability} = \frac{2\text{ heterozygous outcomes}}{3\text{ total black outcomes}} = \frac{2}{3}

There are

2

heterozygous outcomes (

Bb

) out of the

3

possible dominant phenotype outcomes (

BB, Bb, Bb

Anahtar Kavram

Conditional Probability in Monohybrid Inheritance and Phenotypic Selection

Tahmini Süre:1m 0s

Soru 2691Soru →

A pea plant has the heterozygous genotype $Tt$ , where $T$ represents the dominant allele for purple flowers and $t$ represents the recessive allele for white flowers. What color flowers will this plant produce?

White flowers

Purple flowers

Light pink flowers

Striped purple and white flowers

Cevabı ve açıklamayı göster

Cevap: Purple flowers

Cevap

The plant will produce purple flowers because the presence of the dominant allele masks the recessive allele.

In a heterozygous individual (

Tt

), the dominant allele (

T

) masks the expression of the recessive allele (

t

). Because

T

codes for purple flowers, the plant exhibits the dominant purple flower phenotype.

Adım Adım Çözüm

Identify the alleles present in the genotype

Tt

The plant carries one dominant allele (

T

for purple flowers) and one recessive allele (

t

for white flowers).

Determining the allele combination is required to deduce which trait will be physically expressed.

Apply the law of dominance.

The dominant allele (

T

) is expressed, and the recessive allele (

t

) remains unexpressed in the phenotype.

In complete dominance, an organism with at least one dominant allele will display the dominant phenotype.

Anahtar Kavram

Dominant and Recessive Alleles in Mendelian Inheritance

Tahmini Süre:45s

Soru 2692Soru →

Proteins synthesized by free cytosolic ribosomes are packaged into transport vesicles and routed through the Golgi apparatus for extracellular secretion.

Doğru

Yanlış

Cevabı ve açıklamayı göster

Cevap: False

Cevap

False. Free cytosolic ribosomes synthesize intracellular proteins, whereas secreted proteins are synthesized exclusively by ribosomes bound to the rough endoplasmic reticulum before moving to the Golgi apparatus.

Evaluating the statement as false is correct because the Golgi apparatus processes proteins delivered specifically from the rough endoplasmic reticulum. Free ribosomes translate proteins that remain in the cytoplasm or enter organelles like the nucleus and mitochondria directly without vesicular packaging.

Adım Adım Çözüm

Identify the cellular sites of protein synthesis and their functional specialization.

Ribosomes exist either freely suspended in the cytosol or bound to the membrane of the rough endoplasmic reticulum.

The destination of a newly synthesized protein depends directly on where it is translated.

Trace the pathway required for extracellular secretion (the endomembrane secretory pathway).

Secretory proteins possess a signal peptide directing them to dock at the rough endoplasmic reticulum, from which they bud in vesicles to the cis-Golgi, undergo processing, and are targeted to the plasma membrane for exocytosis.

Vesicular trafficking requires luminal entry into the endoplasmic reticulum network.

Evaluate the role of free cytosolic ribosomes against the statement.

Free cytosolic ribosomes release their products directly into the cytosol, bypassing the endoplasmic reticulum and Golgi apparatus entirely.

Free ribosomes do not feed into the lumen of the endomembrane system, making the statement false.

Anahtar Kavram

Compartmentalization and the endomembrane secretory pathway versus cytosolic translation.

Tahmini Süre:1m 0s

Soru 2693Soru →

In biological taxonomy, organisms are grouped into major kingdoms and domains based on fundamental cellular organization and nutritional modes. Match each classification group on the left with its defining cellular and metabolic characteristics on the right.

Soldaki öğeye tıklayın, sonra eşleşen sağdaki öğeye tıklayın

Cevabı ve açıklamayı göster

Cevap

Kingdom Fungi corresponds to heterotrophic eukaryotes with chitin cell walls that absorb nutrients externally; Kingdom Plantae corresponds to multicellular autotrophs with cellulose cell walls; Kingdom Animalia corresponds to multicellular heterotrophs lacking cell walls; Domain Bacteria corresponds to unicellular prokaryotes with peptidoglycan cell walls.

Each classification rank is defined by key diagnostic traits: Fungi are absorptive heterotrophs with chitin walls; Plantae are photosynthetic autotrophs with cellulose walls; Animalia are ingestive heterotrophs lacking cell walls; Bacteria are prokaryotes with peptidoglycan cell walls.

Adım Adım Çözüm

Identify the cellular domain level of organization for the prokaryotic group

Domain Bacteria is the only prokaryote listed, characterized by the lack of membrane-bound organelles and walls with peptidoglycan.

Separating prokaryotes from eukaryotes immediately isolates the single bacterial group from the three eukaryotic kingdoms.

Distinguish autotrophic organisms with photosynthetic organelles

Kingdom Plantae is identified as multicellular photosynthetic autotrophs with cellulose-based cell walls.

Plants are uniquely capable of autotrophy among the listed multicellular eukaryotic kingdoms.

Differentiate between the heterotrophic eukaryotic kingdoms based on cell wall composition and feeding mode

Kingdom Fungi has chitin cell walls with absorptive nutrition, whereas Kingdom Animalia completely lacks cell walls and ingests nutrients.

Cell wall presence and structural polymer type (chitin vs. absent) provide definitive diagnostic separation between fungi and animals.

Anahtar Kavram

Diagnostic cellular structure, cell wall composition, and nutritional strategy across major taxonomic kingdoms and domains

Tahmini Süre:1m 0s

Soru 2694Soru →

An organism that displays a dominant phenotype must possess a homozygous genotype for that specific trait.

Doğru

Yanlış

Cevabı ve açıklamayı göster

Cevap: False

Cevap

False. An organism exhibiting a dominant phenotype can possess either a homozygous dominant or a heterozygous genotype.

In complete dominance, a dominant allele masks the expression of a recessive allele. An individual can express the dominant phenotype through two distinct genotypes: homozygous dominant (having two copies of the dominant allele) or heterozygous (having one dominant and one recessive allele). Thus, displaying the dominant phenotype does not require a homozygous genotype.

Adım Adım Çözüm

Distinguish between genotype and phenotype under Mendelian inheritance.

Genotype represents the specific combination of alleles (

AA

Aa

, or

aa

), whereas phenotype represents the observable physical characteristic.

To establish the relationship between genetic makeup and outward physical expression.

Identify which genotypes yield a dominant phenotype in a complete dominance system.

Both homozygous dominant (

AA

) and heterozygous (

Aa

) genotypes result in the dominant phenotype because the dominant allele masks the recessive allele.

To evaluate whether a homozygous genotype is strictly required to express the dominant phenotype.

Assess the validity of the statement.

Because heterozygous individuals (

Aa

) also express the dominant phenotype, having a dominant phenotype does not guarantee a homozygous genotype.

To determine the final true/false evaluation of the statement.

Anahtar Kavram

Dominant and Recessive Alleles in Genotype versus Phenotype Expression

Tahmini Süre:45s

Soru 2695Soru →

An unidentified eukaryotic cell maintains high metabolic activity through aerobic respiration, yet it does not release oxygen when exposed to sunlight and carbon dioxide. Additionally, when the cell is placed in a hypotonic solution (pure water), it swells but structurally remains intact without bursting. Based on these findings, which specific organelle is definitively ABSENT from this cell, and what structure provides its osmotic protection?

Chloroplast; cell membrane

Chloroplast; cell wall

Mitochondrion; cell wall

Mitochondrion; cell membrane

Cevabı ve açıklamayı göster

Cevap: Chloroplast; cell wall

Cevap

Chloroplast; cell wall

The correct answer identifies that the inability to produce oxygen from sunlight and carbon dioxide means the cell lacks chloroplasts. Furthermore, the cell's ability to survive in a hypotonic solution (pure water) without bursting indicates the presence of a rigid cell wall, which provides structural support against osmotic pressure.

Adım Adım Çözüm

Analyze the metabolic clue regarding oxygen and sunlight.

The cell does not produce oxygen in sunlight, meaning it does not perform photosynthesis. Therefore, chloroplasts are absent.

Chloroplasts are responsible for converting light energy and carbon dioxide into glucose and oxygen.

Analyze the metabolic clue regarding respiration.

The cell uses aerobic respiration, which confirms the presence of mitochondria.

Mitochondria are the site of aerobic cellular respiration in eukaryotes.

Analyze the structural clue regarding the hypotonic solution.

The cell swells but does not burst in pure water, indicating the presence of a rigid outer boundary.

Animal cells (which only have a cell membrane) will swell and burst (lyse) in hypotonic solutions. Cells with a cell wall (like plant or fungal cells) will become turgid but remain intact.

Synthesize the findings to select the correct pair.

The absent organelle is the chloroplast, and the structure providing osmotic protection is the cell wall.

Combining the deductions from steps 1 and 3 directly matches one of the provided options.

Anahtar Kavram

The functional differentiation of cellular organelles and structural boundaries (cell wall vs. cell membrane) under varying environmental and metabolic conditions.

Soru 2696Soru →

According to the rules of binomial nomenclature, which two taxonomic categories are combined to form an organism's scientific name?

Kingdom and phylum

Genus and species

Order and family

Class and order

Cevabı ve açıklamayı göster

Cevap: Genus and species

Cevap

Genus and species

Binomial nomenclature, formalized by Carl Linnaeus, gives each species a unique two-part scientific name consisting of its genus name followed by its species name.

Adım Adım Çözüm

Recall the definition and structure of binomial nomenclature

Binomial nomenclature is the standard biological system for assigning a two-word scientific name to each organism.

Understanding the naming convention defines which hierarchical levels are paired together.

Identify the specific taxonomic ranks used in the two-part name

The first word is the genus (capitalized) and the second word is the species epithet (lowercase).

This uses the two most specific classification levels to uniquely designate an individual organism.

Anahtar Kavram

Binomial nomenclature pairs the genus and species ranks to form a universal scientific name.

Tahmini Süre:30s

Soru 2697Soru →

Newly synthesized proteins must be chemically modified, sorted, and packaged into membrane-bound vesicles before being routed to their final intracellular or extracellular destinations. Which cellular organelle is responsible for this packaging and distribution process?

Mitochondrion

Chloroplast

Golgi apparatus

Central vacuole

Cevabı ve açıklamayı göster

Cevap: Golgi apparatus

Cevap

The Golgi apparatus is the organelle responsible for modifying, sorting, and packaging proteins into vesicles for distribution.

The Golgi apparatus functions as the post office of the cell. It receives newly synthesized proteins from the rough endoplasmic reticulum, adds chemical tags such as carbohydrates, sorts them, and pinches off membrane-bound vesicles to deliver them to specific locations inside the cell or outside via exocytosis.

Adım Adım Çözüm

Identify the cellular function described in the question stem.

The process involves modifying, sorting, and packaging synthesized proteins into transport vesicles.

Matching the specific metabolic task to the correct organelle determines the correct structure.

Evaluate the primary functions of each listed organelle.

Mitochondria produce ATP, chloroplasts conduct photosynthesis, central vacuoles store water and waste, and the Golgi apparatus modifies and packages proteins.

Each organelle possesses a distinct physiological role in eukaryotic cells.

Select the organelle corresponding to protein modification and vesicle packaging.

The Golgi apparatus is confirmed as the cellular packaging center.

It receives raw proteins from the endoplasmic reticulum and tags them for their target destinations.

Anahtar Kavram

Cellular organelle specialization and protein trafficking

Tahmini Süre:45s

Soru 2698Soru →

Ribosomes are the cellular structures responsible for synthesizing proteins in both plant and animal cells.

Doğru

Yanlış

Cevabı ve açıklamayı göster

Cevap: True

Cevap

True. Ribosomes serve as the primary sites of protein synthesis across all eukaryotic organisms, including plants and animals.

The statement is true because ribosomes are universally responsible for manufacturing proteins from amino acids in both plant and animal cells.

Adım Adım Çözüm

Identify the biological role of ribosomes.

Ribosomes bind messenger RNA and transfer RNA to synthesize polypeptide chains (proteins).

Understanding organelle specialization verifies whether the stated function matches the organelle.

Verify the presence and role of ribosomes in plant and animal cells.

Both plant and animal cells require proteins for structural and enzymatic functions and contain ribosomes in their cytoplasm and on the rough endoplasmic reticulum.

Confirming cellular distribution ensures the scope of the statement is accurate.

Anahtar Kavram

Ribosome function in cellular protein synthesis

Tahmini Süre:30s

Soru 2699Soru →

In human sex-linked inheritance, a biological male displaying an X-linked recessive trait must have inherited the causal allele from his mother, and will inevitably pass that allele to all of his biological daughters.

Doğru

Yanlış

Cevabı ve açıklamayı göster

Cevap: True

Cevap

True

Because biological males have an

XY

genotype, they receive their single X chromosome carrying the recessive allele from their mother. When an affected male reproduces, he passes his Y chromosome to all sons and his single X chromosome carrying the mutant allele to all daughters.

Adım Adım Çözüm

Analyze the chromosomal sex determination in males and females

Biological males possess

XY

sex chromosomes, while biological females possess

XX

sex chromosomes.

Understanding sex chromosome distribution is essential for tracking sex-linked allele transmission.

Determine maternal inheritance for affected males

An affected male (

X^r Y

) receives his Y chromosome from his father and his

X^r

chromosome exclusively from his mother.

The Y chromosome does not carry X-linked genes, meaning the recessive allele must come from the maternal gamete.

Determine paternal transmission to female offspring

All biological daughters receive the father's single X chromosome (

X^r

) and one maternal X chromosome.

Fathers invariably contribute their X chromosome to female offspring, making all daughters inherit the paternal allele.

Anahtar Kavram

Sex-Linked Inheritance and Hemizygosity

Tahmini Süre:1m 0s

Soru 2700Soru →

In genetics, which statement correctly describes a dominant allele?

It is always the most common allele found in a population.

It is expressed in an organism's phenotype even if only one copy is inherited.

It must be inherited from both parents in order to be expressed physically.

It physically alters the nucleotide sequence of the recessive allele during reproduction.

Cevabı ve açıklamayı göster

Cevap: It is expressed in an organism's phenotype even if only one copy is inherited.

Cevap

A dominant allele is expressed in an organism's phenotype even if only one copy is inherited.

A dominant allele masks the effect of a recessive allele; therefore, an organism only needs to inherit one copy to display the associated phenotype.

Adım Adım Çözüm

Identify the definition of allele dominance in genetics.

Dominance refers to an allele that masks the phenotypic contribution of a paired recessive allele.

Understanding how alleles interact in heterozygous pairs allows for the prediction of physical traits.

Determine the minimum number of dominant alleles needed for phenotypic expression.

Only one copy of a dominant allele is required to display the dominant phenotype.

Because the dominant allele masks the recessive allele, an organism with either one or two dominant alleles will display the trait.

Anahtar Kavram

Dominant Alleles and Phenotypic Expression

Tahmini Süre:40s

ÖncekiSayfa 135 / 261Sonraki

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