Methylation affects protein synthesis by
affecting which of the following proteins?
a. histones
b. RNA polymerase
c. DNA polymerase
d. hemoglobin
e. transcription factors
A
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Who developed the science of taxonomy?
a. Charles Darwin b. Aristotle c. Alfred Russel Wallace d. Sir Isaac Newton e. Carolus Linnaeus
Which of the following occurs in pulmonary emphysema?
a. The alveoli lose their elasticity. b. The surface area of the lung is greatly decreased. c. Walls between adjacent alveoli become reinforced. d. The heart becomes enlarged from pressure. e. Fresh air accumulates in the lungs because it cannot be properly inhaled.
Which of the following terms refers to the maintenance of the body's internal environment at relatively constant levels?
a. feedback b. homeostasis c. natural selection d. physiology
Transferring Euglena into a dark environment results in the loss of photosynthetic pigment. What conclusion does this support?
A. Euglenoids are neither plant-like or animal-like protists. B. Euglenoids are closely related to plants. C. Euglenoids are obligate photoautotrophs. D. Light triggers heterotrophy.