Which of the following adaptations to the plasma membrane allows mammals to hibernate in subzero
temperatures without their plasma membranes freezing?
a. Increase in cholesterol content only.
b. Increase in protein content only.
c. Increase in the number of double covalent bonds in phospholipids.
d. Increase in both cholesterol and protein content.
e. Increase in both cholesterol and double covalent bonds in phospholipids.
E
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Which arthropod subgroup includes the spiders?
A. Crustaceans B. Insects C. Arachnids D. None of the above include spiders
Which of the following is NOT true of euglenoids?
a. Many move by pseudopods. b. Many contain chloroplasts. c. Many absorb nutrients from their environment in a heterotrophic manner. d. Their cell body is surrounded by a pellicle. e. They use a contractile vacuole to maintain water balance.
An organelle found in the nucleus is known as a ____
a. nucleolus b. plastid c. vacuole d. microvillus e. basal body
The phenomenon through which populations of organisms change over several generations is termed
A. organization. B. homeostasis. C. biological evolution. D. growth and development. E. reproduction.