Figure 20.2 -The Antibiotic Cycloheximide Binds to the 60S Subunit of the 60S

question 44

Multiple Choice

Figure 20.2

-The antibiotic cycloheximide binds to the 60S subunit of the ribosome as shown in Figure 20.2. The effect is to

• A) Prevent peptide bond formation in prokaryotes.
• B) Prevent polypeptide elongation in eukaryotes.
• C) Prevent transcription in prokaryotes.
• D) Prevent mRNA- ribosome binding in eukaryotes.
• E) None of the above.

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Definitions:

Base

A substance that can accept protons or donate a pair of electrons to form a bond, usually raising the pH of a solution when dissolved in water.

Great Arteries

The major arteries, such as the aorta and pulmonary artery, that carry blood away from the heart to the body or lungs.

Cardiac Cycle

The sequence of events in the heart from the beginning of one heartbeat to the beginning of the next, including systole (contraction) and diastole (relaxation).

Ventricles

Lower chambers of the heart that receive blood from the atria and pump it to the lungs and the rest of the body.