Where in a plant cell is chlorophyll found?
a. on the outer chloroplast membrane
b. in the cytoplasm of the cell
c. in the stroma
d. in the thylakoids
e. none of these
Answer: d
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Which of the following repair enzymes is targeted for degradation after it reacts one time?
A. photolyase B. AP endonuclease C. MutH D. DNA glycosylase E. methyltransferase
Hemoglobin helps maintain the oxygen pressure gradient by ____
a. carrying oxygen away from the lungs b. carrying carbon dioxide away from the lungs c. releasing oxygen at the lungs d. releasing carbon dioxide at the tissue e. releasing oxygen into the alveoli
An ectopic pregnancy occurs when a fertilized egg implants somewhere other than in the lining of the uterus. Usually it implants in the oviduct. Which of the following would be the most likely explanation for such a pregnancy being unsuccessful?
A) The orientation of the baby would be sideways. B) Human chorionic gonadotropin (hCG) cannot be produced in the oviduct. C) The lining of the oviduct is unable to support the developing fetus. D) The necessary hormones cannot reach the developing fetus in the oviduct.
In the equation 2 H2 + O2 ? 2 H2O, the H2 molecules are ________ and the H2O molecules are ________
A) reactants; products B) products; reactants C) created; destroyed D) used; stored