Many variants are produced during the long course of an HIV infection. Which variant would be most fit in the environment of the human body?
A) a virus that infects liver cells
B) a virus that reproduces very slowly
C) a virus that makes fewer mistakes when replicating its RNA
D) a virus that can't be recognized by the patient's immune system
D
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Magnetoreceptors ____
a. are well characterized and understood b. are known to rely on the mineral magnetite c. help many types of animals navigate long distances d. have been studied only in homing pigeons e. have been studied primarily in moths
How does the amount of yolk relate to the nourishment of the organism?
a. An egg with a small amount of yolk contains all of the nutrients for the embryo's development. b. An egg with a large amount of yolk contains all of the nutrients for the embryo's development. c. An egg lacking yolk contains all of the nutrients for the embryo's development. d. There is no relationship between the amount of yolk and the nourishment of the organism. e. All animal eggs have the same amount of yolk and provide the same amount of nourishment.
The electrons lost by the P680 reactive center are replaced from:a
a water molecule. b. solar energy. c. ATP. d. NADP+. e. Photosystem II.
The full set of genetic instructions of an organism is its (phenotype/genome/genotype)
What will be an ideal response?