Which of the following environmental factors can affect the phenotypes expressed by a genotype?
a. Atmospheric oxygen
b. Diet
c. Solar radiation
d. Humidity
e. All of the above cause plasticity
f. I don't know the answer
Answer: e. All of the above cause plasticity
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You are investigating a particular cell type and you notice that a protein normally found in the lysosome ends up being secreted out of the cell
This appears to be the only thing wrong with these cells. Suggest a defect that could explain this observation. What will be an ideal response?
Amniocentesis involves sampling
a. the fetus directly. b. the fetal cells floating in the amniotic fluid. c. sperm. d. blood cells. e. placental cells.
The substance indicated as “A” is a(n)
a. inhibitor. b. activator. c. substrate. d. coenzyme. e. cofactor.
The right atrium
A. is the location of the pacemaker cells of a normal heart. B. prevents blood flow from the right ventricle to the right atrium. C. prevents blood flow from the left ventricle to the left atrium. D. prevents blood flow from the pulmonary artery to the right ventricle. E. prevents blood flow from the aorta to the left ventricle.