Primary spermatocytes develop from the division of
A) male gametes.
B) secondary spermatocytes.
C) spermatogonia.
D) somatic cells.
C) spermatogonia.
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In eukaryotic cells, transcription occurs
A. on the surface of the nuclear membrane. B. on ribosomes. C. on spliceosomes. D. inside the nucleus. E. on the surface of the plasma membrane.
All cnidarians have tentacles that are armed with rows of stinging:
a. cnidocysts. b. medusae. c. epidermal cells. d. polyps. e. collar cells.
Humans rely on fossil fuels for much of our energy needs. The burning of fossil fuels adds carbon dioxide (CO2) to the carbon dioxide already in the atmosphere. How do plants help keep some of this extra carbon dioxide from accumulating in the atmosphere?
A) Plants store carbon dioxide in their tissues. B) Plants return carbon dioxide to the ground through their roots. C) Plants take in atmospheric carbon dioxide to produce food. D) Plants break down carbon dioxide into carbon and oxygen.
Explain what happens in exponential population growth
What will be an ideal response?