Which of the following is not true about nematodes such as C. elegans?
a. The mouth develops after the anus.
b. It has three germ layers.
c. It undergoes cell differentiation.
d. All of the following are true.
A
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Some types of dinoflagellates (single-cell eukaryotes) show a circadian rhythm. They produce light for about 12 hours in the dark (at night) and photosynthesize for about 12 hours in the light (during the day)
Say you took some dinoflagellates at the end of their 12 hours of darkness and put them on a 24-hour light cycle. How would the cells likely respond during the first day of that cycle? A. The cells would photosynthesize for the full 24 hours. B. The cells would photosynthesize for more than 12 hours but less than the full 24 hours. C. The cells would produce light for the full 24 hours. D. The cells would not produce light or photosynthesize.
Of the cellular blood components, ____ are the smallest in size
a. erythrocytes b. leukocytes c. platelets d. albumins e. lymphocytes
What evidence supports the theory of an early "RNA world"?
What will be an ideal response?
Acromegaly is the result of excessive secretion of which of the following by adults?
a. mineralocorticoid b. glucocorticoid c. thyroxine d. testosterone e. growth hormone