Which of the following is a major function of the ovaries?
A. They manufacture the sex hormones, estrogen and progesterone.
B. They comprise the canal through which babies are delivered.
C. They are the organs directly responsible for a woman's orgasm.
D. They hold and nourish the developing fetus.
A. They manufacture the sex hormones, estrogen and progesterone.
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Eukaryotic cells are thought to have
a. appeared about 2.1 billion years ago. b. first appeared as parts of multicellular organisms. c. evolved before prokaryotic cells. d. developed when mitochondria grew much larger in size that they had been previously. e. first appeared with tough cell walls.
Which of the following determines an
observable trait?
a. phenotype b. genotype c. gene location d. morphotype e. phototype
Which of the following is NOT true about the
enzyme telomerase? a. It can re-establish telomere length. b. It is found in stem cells. c. It is responsible for telomere shortening. d. It may slow the aging process. e. It is highly expressed in cancer cells
Which of the following major divisions of geologic time is mismatched with the organisms that flourished during that time period?
A. Mesozoic Era-Age of Reptiles B. Holocene epoch-The Age of Man C. Cambrian Period-Age of Fish D. Carboniferous Period-Age of Amphibians