Suppose a particular protein is produced in excess of the cell's needs. What kind of mechanism will intervene to stop
production?
a. growth
b. anabolic
c. metabolic
d. respiratory
e. homeostatic
e
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Trichomoniasis is caused by a
A. fungus. B. virus. C. bacteria. D. protozoan.
What is the ultimate source of all diversity?
A) natural selection B) sexual recombination C) meiosis D) mutation
Which of the following is false about rifamycins?
A) They were originally isolated from bacteria. B) They are broad-spectrum antimicrobials that are effective against most Gram-positive bacteria and some Gram-negative bacteria too. C) They inhibit transcription by binding to RNA polymerase. D) Because the chemical structure is such a good fit with RNA polymerase, it is unlikely to cause interactions with any other medications currently known. E) The drugs are useful to combat mycobacterial species that can be especially tough to treat due to the challenges of getting drugs across their waxy mycolic acid-enriched cell wall.
At what point in meiosis do the homologous chromosomes separate from one another?
A) telophase I B) telophase II C) prophase II D) anaphase I E) metaphase I