CAM plants
A) occur mostly in rainforests.
B) fix carbon dioxide during the night.
C) fix carbon dioxide in bundle sheath cells.
D) lack stomata.
B
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Members of the Nostoc genus have large numbers of thylakoid membranes, and many have gas vesicles. What statement is also most likely true about Nostoc?
A. They are pathogenic. B. They form an endosymbiotic mutualism with plant roots. C. They are photoautotrophs. D. They are methanogens. E. They are archaea.
The parts of a flower most likely to have distinctive colors, patterning, and shapes for attracting pollinators are the
a. petals b. carpels c. stamens d. receptacles e. sepals
Which of the following is a disease specifically caused by an autoimmune response against acetylcholine receptors?
A) ataxia B) myasthenia gravis C) multiple sclerosis D) tetanus E) botulism
Which of the following proteins are required for target cells to interact with hormones?
A) Neurotransmitters B) Response proteins C) Receptors D) Cyclic adenosine monophosphates (AMPs) E) Neuromodulators