What are the short retinal photoreceptors responsible for color vision called?
A. rods
B. cones
C. bipolar cells
D. glial cells
E. ganglion cells
B. cones
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The group of protists to which you are most closely related is:
A. the choanoflagellates B. slime molds C. Rhizaria D. Foraminifera E. Stramenopila
If all of the hydrogen bonds in a DNA molecule were
to break, a. the nucleotide base pairs would separate from each other. b. base pairing would not be affected. c. the phosphate groups would separate from the deoxyribose sugars. d. the deoxyribose sugars would separate from the nitrogen-containing bases. e. the molecule would unwind, but the two strands would stay together.
Which of the following is/are true about enzymes?
A. Enzymes are highly specific for the substrates they react with and catalyze only one or a limited set of possible reactions with those substrates. B. Enzymes are catalysts that speed up reactions. C. Enzymes are proteins that can be denatured by changes in pH or temperature. D. All of the choices are correct.
Visual acuity is highest when an image is focused on what part of the retina?
A. Anywhere, as long as there is ample light B. Cones within the fovea C. Rods outside the fovea D. Cones outside the fovea E. Rods within the fovea