Soru

Zorluk: OrtaKingdom Protista: Protozoa and Unicellular Algae

Match each subcellular structure of unicellular protists listed on the left with its corresponding primary biological function on the right.

  • PyrenoidSynthesis and accumulation of starch surrounding a central protein core
  • TrichocystDischarge of thread-like filaments for defense and prey capture
  • PellicleMaintenance of a definite cell outline while permitting flexible body movement
  • CytoproctEgestion of solid, indigestible food residues to the exterior

Cevap

Pyrenoid matches with starch synthesis surrounding a protein core; Trichocyst matches with discharge of thread-like filaments for defense; Pellicle matches with maintenance of definite cell outline with flexibility; Cytoproct matches with egestion of solid indigestible residues.
Each organelle is paired according to its specific cellular role: the pyrenoid synthesizes starch around a protein core; the trichocyst acts as an ejectable defensive filament; the pellicle offers structural integrity combined with flexibility; and the cytoproct serves as the dedicated site for solid waste egestion.

Adım Adım Çözüm

1
Identify the function of the algal chloroplast organelle (Pyrenoid).
Pyrenoid acts as a starch synthesis center.
It fixes carbon dioxide and condenses glucose into starch grains around a protein matrix.
2
Determine the role of the defensive structure in ciliates (Trichocyst).
Trichocyst discharges filaments upon stimulation.
These barbed structures deter predators or immobilize small organisms.
3
Analyze the outer supportive layer of wall-less protists (Pellicle).
Pellicle provides shape and flexibility.
Interlocking protein strips allow cell distortion during locomotion without membrane rupture.
4
Locate the specialized egestive pore in complex protozoans (Cytoproct).
Cytoproct expels solid waste.
Insoluble remnants remaining after intracellular digestion are exocytosed through this fixed site.

Anahtar Kavram

Subcellular structure and physiological function in Kingdom Protista
Tahmini Süre:1m 30s
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