There are fewer antifungal, antiprotozoan, and antihelminthic drugs compared to antibacterial drugs because fungi, protozoa, and helminths

A. are not affected by antimicrobials.
B. have fewer target sites in their cells compared to bacteria.
C. are so similar to human cells that drug selective toxicity is difficult to achieve.
D. do not cause many human infections.
E. are parasites found inside human cells.


Answer: C

Biology & Microbiology

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Consisting of the fossilized remains of seedless vascular plant life, ____ was the first fuel to be widely used by human

societies.

a. gasoline b. petroleum c. natural gas d. crude oil e. coal

Biology & Microbiology

What agricultural practice encourages the rapid

spread of plant diseases?

a. irrigation practices b. use of herbicide sprays c. genetic modification of crops d. planting large areas with a single variety e. use of pesticides

Biology & Microbiology

Which statement about primate chromosomes is

false? a. Thirteen of twenty-three pairs of human chromosomes are nearly identical with chimpanzee and gorilla chromosomes. b. One human chromosome matches two chimp chromosomes. c. Inversions, translocations, and duplications may have contributed to differences among primates. d. Chimpanzees and gorillas have twenty-three pairs of chromosomes. e. During human evolution, two chromosomes permanently fused.

Biology & Microbiology

Which of the following describe density-dependent factors? (Check all that apply.)A) They act to regulate population growth.B) They are especially important in K-selected populations.C) They can affect growth rates but not population size.D) They can affect birth rates or death rates.E) They do not involve biological interactions.F) One example would be intraspecific competition for resources.

What will be an ideal response?

Biology & Microbiology