Which of the following human extraembryonic
membranes forms the urinary bladder?
a. amnion
b. yolk sac
c. chorion
d. allantois
e. none of these
Answer: d
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Nitrifying Archaea such as Nitrosopumilus maritimus use ________ as a sole carbon source and are capable of obtaining sufficient energy by aerobically oxidizing ________
A) CO2 / NO B) sugars / NH3 C) CO2 / NH3 D) organic acids / NO
Which of the following statements concerning phytochrome-induced responses is FALSE?
a. All responses are very rapid and short-term. b. Red light causes potassium channels to open. c. The absorption of light by one part of the phytochrome molecule triggers a conformational change in another part. d. Phytochrome activates transcription of the gene for a subunit of rubisco. e. Far-red light causes potassium channels to close.
Taking a nap after meals is probably a good idea because it allows the body to digest the food as a result of the activities of the ________ nervous system
A) sensory B) central C) parasympathetic D) sympathetic E) somatic
Which cell structure is correctly paired with its primary function?
A. ribosome - protein synthesis B. mitochondrion - movement C. vacuole - cell division D. nucleus - storage of nutrients