Which is (are) the predominant second messenger(s)
involved in regulating glucose metabolism?
a. insulin
b. glucagon
c. adenyl cyclase
d. cAMP
e. all of these
Answer: d
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What can be said about animal and vegetal poles?
A. When animal pole cells are cultured with vegetal pole cells, some of the animal pole cells become mesoderm. B. When animal pole cells are cultured with vegetal pole cells, some of the vegetal pole cells become mesoderm. C. Isolated animal cells develop as endoderm. D. Isolated vegetal cells develop as ectoderm.
Which of the following is true regarding bacterial genetics?
A. Bacteria are usually diploid organisms B. Bacteria primarily reproduce sexually C. The patterns of inheritance in bacteria are studied using different mechanisms than eukaryotes D. Bacteria generally have linear chromosomes
The physical place where members of a population typically live is termed a
A. symbiont. B. niche. C. habitat. D. community. E. competitive zone.
In the thylakoid membranes, the pigment molecules in a light-harvesting complex _____
A) split water and release oxygen from the reaction-center chlorophyll B) absorb and transfer light energy to the reaction-center chlorophyll C) synthesize ATP from ADP and i D) transfer electrons to ferredoxin and then NADPH