Chlorophyll a and the accessory pigments of a photosystem act as an antenna by:
A) absorbing energy from NADPH and passing it on.
B) being the primary electron acceptor.
C) absorbing energy from sunlight and passing it on.
D) absorbing CO2 and passing it on.
Answer: C
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A Class 4 hurricane is centered over Bermuda (latitude 32.20 N) and is moving eastwards. Which coastal city on the eastern coast of the United States is in the most peril from its approach?
a. Savannah, GA (latitude 32.08 N) b. Jacksonville, FL (latitude 30.32 N) c. Wilmington, NC (latitude 34.23 N) d. Boston, MA (latitude 42.36 N)
At what point are introns removed?
1.When the DNA is replicated. 2.Before the mRNA leaves the nucleus. 3.As the mRNA is being transcribed. 4.As the mRNA is being translated.
The first viroid was found in plants and was a
a. circular DNA surrounded by protein. b. circular RNA surrounded by protein. c. circular DNA with no protein coat. d. circular RNA with no protein coat. e. none of the above.
If a person were to receive such a high dose of radiation that all of the cells were to die in this area, anemia would develop. This place is the ________
A) lymph nodes B) red bone marrow C) thymus D) yellow bone marrow