Which of the Following Events Is NOT Part of Prokaryotic

question 32

Multiple Choice

Which of the following events is NOT part of prokaryotic translation initiation?

• A) IF-3 separates ribosome subunits so that a small subunit can bind mRNA through base pairing of the 16S rRNA and the Shine-Dalgarno sequence on the mRNA.
• B) An initiator tRNA^formylmet binds the initiation codon, with the help of IF-1 and IF-2 complexed with GTP. The tRNA^formylmet is positioned in the P site.
• C) A peptide bond is formed by the peptidyl transferase activity of the large subunit rRNA. The polypeptide chain on the tRNA in the P site is transferred to the amino acid on the tRNA in the A site.
• D) IF-3 dissociates, allowing a large subunit to bind the 30S initiation complex.

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Definitions:

Environmental Sustainability

The ability to meet humanity’s current needs without compromising the ability of future generations to meet their needs.

Endangered Species

A species whose numbers are so severely reduced that it is in imminent danger of extinction throughout all or part of its range. Compare with threatened species.

Trematodes

A class of flatworms, commonly known as flukes, which are parasitic at some stage of their life cycle.

Habitat Destruction

The process by which natural habitat is rendered unable to support the species present, usually due to human activities such as agriculture or urban development.