What action by epinephrine and norepinephrine results in halting function of the kidneys during times of extreme stress?
a. They stabilize blood pressure and volume.
b. They stimulate the renal tubules to reabsorb more sodium.
c. They stop the flow of blood to the nephron.
d. They insert aquaporins into collecting ducts and this promotes reabsorption of water.
c. They stop the flow of blood to the nephron.
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Which reaction represents cellular respiration?
A. Sugar + Oxygen ? Carbon dioxide+ Water + ATP B. Water + ATP ? Carbon dioxide + Sugar C. Carbon dioxide + Water + ATP ? Sugar + Oxygen D. Oxygen + Carbon dioxide ? Sugar + Water + ATP
An ecosystem is made up of ____
a. only plants, animals and fungi b. organisms and nonliving things c. only rocks and minerals d. only plants, protozoa, and fungi e. the biosphere of the region
__________ individuals inherit three or more of each
type of chromosome from their parents. Fill in the blank(s) with the appropriate word(s).
Compared with eukaryotic chromosomes, bacterial chromosomes are ________
A) large, mainly organized in single-gene transcription units without introns B) small, with high gene density C) small, mainly organized in single-gene transcription units with introns D) large, triple-helix, Z-DNA, organized in single gene units with introns E) large, mainly organized in polygenic transcription units without introns