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Zorluk: OrtaViruses: Structure and Characteristics

Match each viral structural component or packaged enzyme in Column I with its correct biological function or structural origin in Column II.

  • CapsomerMorphological protein subunit that self-assembles to form the protective viral capsid
  • Envelope phospholipidsHost cell-derived membrane layer acquired by enveloped viruses during egress by budding
  • Reverse transcriptaseViral enzyme packaged within the core to synthesize complementary DNA from an RNA template
  • Tail sheathContractile proteinaceous tube used by bacteriophages to inject viral nucleic acid into host cytoplasm

Cevap

Capsomer matches with morphological protein subunit that self-assembles to form the protective viral capsid; Envelope phospholipids match with host cell-derived membrane layer acquired by enveloped viruses during egress by budding; Reverse transcriptase matches with viral enzyme packaged within the core to synthesize complementary DNA from an RNA template; Tail sheath matches with contractile proteinaceous tube used by bacteriophages to inject viral nucleic acid into host cytoplasm.
Capsomers are the individual protein subunits that aggregate to form the outer viral capsid; envelope phospholipids are host-derived lipid bilayers captured during viral budding; reverse transcriptase is a specialized enzyme packaged in retroviruses to synthesize DNA from viral RNA; and the tail sheath is a specialized contractile structure in bacteriophages that injects viral nucleic acid into bacterial hosts.

Adım Adım Çözüm

1
Identify the structural definition of the capsid building blocks.
Capsomer is identified as the morphological protein unit composing the capsid coat.
Capsids are constructed from repeating capsomer proteins.
2
Determine the origin of the viral lipid envelope.
Envelope phospholipids are mapped to host cell-derived membrane layers.
Viruses cannot synthesize lipids; they acquire envelopes by budding through host membranes.
3
Identify retroviral enzymatic components.
Reverse transcriptase is paired with the enzyme synthesizing complementary DNA from viral RNA.
Retroviruses require reverse transcription for replication.
4
Analyze bacteriophage structural mechanisms.
Tail sheath is matched to the contractile protein tube used for genome injection.
Bacteriophage infection involves tail sheath contraction to penetrate the bacterial wall.

Anahtar Kavram

Biochemical Roles and Functions of Viral Structural Features
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