The photoreceptors of an earthworm are
located
a. on short antennae.
b. on their body surface.
c. in their eyes.
d. near the tip of their tail.
e. nowhere- earthworms do not have
photoreceptors.
B
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A woman visits her doctor's office complaining of pattern baldness. Her mother and father do not have pattern baldness, but her brother does. The doctor is concerned that she may have the serious condition of _______, and he immediately orders blood tests to check her ________ levels.
A. tumor of the adrenal gland, 5-dihydrotestosterone B. tumor of the reproductive system, testosterone C. skin cancer, 2,5 alpha-reductase D. tumor of the adrenal gland, estradiol E. tumor of the reproductive system, 5-dihydrotestosterone
The buffering effect of the balance between carbon dioxide, bicarbonate, and carbonate is stronger in freshwater than it is in the marine environment.
Answer the following statement true (T) or false (F)
In a chemical reaction, glyceraldehyde-3-phosphate + NAD+ yields 1,3-bisphosphoglycerate + NADH. In this reaction, what happened to NAD+?
A. It served as an enzyme to catalyze the reaction, and at the end of the reaction formed NADH B. It was oxidized to form NADH C. It was activated to form NADH D. It was reduced to form NADH
What is the probability that IV-1 is affected (rr)? Yes, that's correct!
a. 2/3 b. 1/12 c. 1/2 d. 3/4