Which of the following is least likely to be part of a cell membrane?
A) peptidoglycans
B) phospholipids
C) glycoproteins
D) transport proteins
E) enzymes
Answer: A
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If this was an ecosystem-level study, what additional data might Paine need to collect?
a. predation b. communication and social groups c. parasites d. light levels
What symbiotic organisms do corals lose during bleaching?
a. coralline algae b. dinoflagellates c. diatoms d. green algae e. red algae
Gibberellins have their most dramatic effects
a. on leaves. b. in promoting abscission. c. on fruit ripening. d. on stem lengthening. e. on flowers.
Age-related changes in systems other than the nervous system include
a. a decrease in the size of the heart. b. a break down of alveolar walls in the lungs. c. the buildup of cholesterol plaques in blood vessels. d. a decrease in blood transport to organs. e. all of these.