Biomagnification usually happens for chemicals that
A. are not readily degraded.
B. dissolve in fat.
C. dissolve in water.
D. are not readily degraded and dissolve in fat.
E. are not readily degraded and dissolve in water.
D. are not readily degraded and dissolve in fat.
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Amino acids are assembled within the cells to form:
a. nucleic acids. b. triglycerides. c. phospholipids. d. polypeptides. e. DNA.
The splitting of water in photosynthesis
a. releases oxygen. b. results in accumulation of H+ inside the thylakoid. c. releases electrons. d. helps to fill an electron hole in the second photosystem. e. does all of these
What key conclusion did Riesch and Schlupp draw from the life history data of the Atlantic mollies?
A. More energy is invested in producing larger offspring when the populations live in environmentally stressful habitats. B. The populations exposed to H2S are able to use the toxic molecule for metabolic energy. C. Genetic regulation in the species results in production of equal sizes of offspring whether exposed to stressful environments or not. D. More energy is invested in producing many more offspring when the populations live in environmentally stressful habitats. E. The populations are only able to survive and reproduce when in stressful environments of either darkness or H2S.
How would a large chromosomal inversion affect the expression of a gene if the gene is located between the two break points but no breaks occur within the gene?
A. The inversion would probably have no effect on gene expression. B. The gene would be transcribed in the 3' to 5' direction. C. The gene would be transcribed normally but the mRNA would be translated in the 3' to 5' direction. D. The gene would not be transcribed because it would be oriented in the wrong direction.