Scientists first focused on gene regulation at the level of translation, rather than transcription, because more was known about protein than nucleic acids at the time.
Answer the following statement true (T) or false (F)
False
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Pfiesteria is a(n) ________ that produces a toxin harmful to humans.
A. alga B. protozoan C. helminth D. endospore E. fungus
Deoxyribonucleic acid contains the genetic information of a cell. It is better known as
a. vitamin D. b. reproductive enzymes. c. RNA. d. DNA. e. vitamin B12.
Which of the following is not an example of a mammal?
A. kangaroo B. platypus C. penguin D. dolphin E. whale
A researcher detects an increase in the amount of natural killer cells in a laboratory rat and concludes that ________
A) the rat has, or recently had, a viral infection B) the rat does not have any cancerous tumors C) the rat's lymphatic system is not functioning properly D) the rat's internal innate defenses are weakened