The topical drug ________ inhibits protein synthesis in Gram-positive bacteria by preventing loading of isoleucine onto tRNA.

A. Amphotericin B
B. Bacitracin
C. Ciprofloxacin
D. Mupirocin
E. Tetracycline


Answer: D

Biology & Microbiology

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Which of the following is a special adaptation for brachiation in primates?

a. One offspring per pregnancy b. A rotating shoulder joint c. A complex placenta d. Large eye sockets

Biology & Microbiology

Refer to Figure 30-1. The tissue layer labeled 5 will give rise to the:


a. skeletal system.
b. muscles.
c. circulatory system.
d. lining of the digestive system.
e. nervous system.

Biology & Microbiology

Describe the characteristics of the Phylum Platyhelminthes.  Check all that apply.

A. They exchange respiratory gases through the body wall. B. They have a complete digestive system. C. They are acoelomate. D. They are triploblastic.

Biology & Microbiology

Archaeal promoters are most similar to those of ________.

A. eukaryotes B. viruses C. bacteria D. both viruses and bacteria

Biology & Microbiology