In living organisms, chemical reactions responsible for growth, repair, and nutrition are collectively referred to as:

a. development
b. metabolism
c. adaptation
d. genetics
e. homeostasis


b

Biology & Microbiology

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E. coli can produce a toxin similar to S. dysenteriae and can cause hemorrhagic colitis. What other organ does it affect?

a. Heart b. Lungs c. Liver d. Kidney

Biology & Microbiology

The infectious form of Chlamydia trachomatis is a(n)

A. reticulate body. B. elementary body. C. primary element. D. core body.

Biology & Microbiology

Which is the best example of the results of a

neutral mutation?

a. A new wing color evolves that enables a butterfly to better hide. b. A new wing color evolves that makes a butterfly more noticeable. c. Larger muscles evolve that allow a rabbit to run faster. d. A new wing color evolves that doesn’t affect a butterfly’s ability to hide or make it more noticeable. e. Larger eyes develop that enable a rat to see better at night.

Biology & Microbiology

What is the most frequent cause of infertility in males?

A. body weight B. pelvic inflammatory disease C. low sperm count D. tubal ligation E. endometriosis

Biology & Microbiology