Fats that stay liquid at room temperature are ____
a. animal fats
b. unsaturated
c. transfatty acids
d. phospholipids
e. cholesterol
ANSWER: b
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What is the difference between a ribonucleotide and a deoxyribonucleotide?
A) Ribonucleotides contain a phosphate group. B) Ribonucleotides have a hydroxyl group on the 2 carbon of their sugar subunit. C) Ribonucleotides contain a sugar with five carbon atoms. D) Ribonucleotides have a hydrogen atom on the 1 carbon of their sugar subunit.
Protein filaments with a diameter of about 10 nm that are major components of the cytoskeleton are called
A. mycelia. B. microfilaments. C. microtubules. D. intermediate filaments.
Which of the following organisms would be likely to use the least energy per kilogram of body weight to maintain its temperature in a preferred range?
a. a whale in the Arctic Ocean b. a clam remaining submerged at low tide c. a tuna swimming in the deep ocean d. a lizard in a desert environment e. a human in a tropical environment
One of the important effects of ethylene is
a. the breakdown of cells. b. cell elongation. c. cell division in meristems. d. activation of protein synthesis. e. inhibition of all of these processes