Compare and contrast the role of O2 and H2O in photosynthesis and cellular respiration
What will be an ideal response?
The role of oxygen gas and water are almost the reverse in the two processes. In cellular respiration,
electrons from the electron transport chain are put onto oxygen gas. This attracts protons and creates
water. In photosynthesis, water is used as a source of electrons, releasing oxygen gas into the
atmosphere while the protons are kept and used in production of a sugar.
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Ommatidia are found in the compound eyes of
A) mollusks. B) amphibians. C) humans. D) insects. E) flatworms.
In terms of epigenetics, how the promoter would be described for a gene that is not expressed in lung tissue but is expressed in heart tissue?
A) The promoters should appear the same in both types of cells, but the mRNA produced would be hypermethylated more in lung cells compared to heart cells. B) In lung cells, the guanines in the promoter would be hypomethylated, but would be hypermethylated in heart cells. C) In lung cells, the cytosines of the promoter would be hypomethylated, and would be hypermethylated in heart cells. D) In lung cells, the cytosines of the promoter would be hypermethylated, and would be hypomethylated in heart cells. E) In lung cells, the guanines in the promoter would be hypermethylated, and would be hypomethylated in heart cells.
Which of the following does not produce ionizing radiation?
A. X-rays B. nuclear fuel C. radon gas D. ultraviolet radiation E. none of these are ionizing radiation
The net ATP yield (at letter "D") from the metabolism of one glucose molecule is
a. 32. b. 4. c. 36. d. 64. e. 28.