The effect of red light on phytochrome is
indicated by
a. A.
b. B.
c. C.
d. D.
e. none of these
B
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Put the following steps of the HIV life cycle in order:1.Viral
RNAs and proteins assemble into new viral particles that bud from the cell. 2.DNA copy of the viral genome is integrated into the host genome. 3.Viral reverse transcriptase makes a DNA copy of the viral RNA genome. 4.Viral particle enters the cell. 5.The provirus is transcribed into viral RNA genomes and mRNAs to make viral proteins.
a. 3,2,5,1,4 b. 2,3,4,5,1 c. 4,2,3,1,5 d. 2,4,3,5,1 e. 4,3,2,5,1
What key feature of chimpanzee tool use have anthropologists identified?
What will be an ideal response?
Starting with carbon dioxide in the air, put the following steps in order to trace the path of carbon through the slow carbon cycle:
What will be an ideal response?
Flowering can be regulated by light, temperature, gibberellin levels, or internal factors. What do all of these different flowering pathways have in common?
A. All four pathways result in a decrease in CONSTANS (CO) expression, which induces flowering. B. All four pathways result in an increase in CONSTANS (CO) expression, which induces flowering. C. All four pathways result in a decrease in LEAFY (LFY) expression, which induces flowering. D. All four pathways result in an increase in LEAFY (LFY) expression, which induces flowering.