Which of the following can be used to disinfect air?
A) HEPA filters
B) ethylene oxide
C) ultraviolet light
D) both HEPA filters and ultraviolet light
E) both ethylene oxide and ultraviolet light
D
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Algae in the genus Caulerpa typically grow to a length of over half a meter and have structures similar to stems, leaves, and roots. Reproduction occurs when adults produce sperm and eggs that fuse to form offspring. Algae in the genus Caulerpa typically grow to a length of over half a meter and have structures similar to stems, leaves, and roots. Reproduction occurs when adults produce sperm and
eggs that fuse to form offspring. Each adult Caulerpa consists of just a single cell, however. Which of the following statements is true? A) Caulerpa violate the pattern component of the cell theory that all organisms consist of cells. B) Caulerpa violate the process component of the cell theory that all cells come from preexisting cells. C) Caulerpa violate both the pattern and process components of the cell theory. D) The existence of Caulerpa is consistent with the cell theory.
If oxygen is unavailable, predict what happens to the citric acid cycle
A. It stops because the supplies of NAD+ and FAD become depleted. B. It stops because ADP levels increase in the absence of oxygen. C. It continues because none of the reactions in the citric acid cycle require oxygen. D. It continues because ATP levels are low, and low ATP activates enzymes of the cycle.
Synapsis is best described as:
A. the exchange of genetic information between sister chromatids. B. the alignment of non-sister chromatids at the metaphase plate. C. the exchange of genetic information between non-sister chromatids. D. the alignment of homologous chromosomes in prophase 1.
Acetylcholine induces vasodilation in intact blood vessels because _____ is released from the _____.
A. nitric oxide, endothelium B. nitric oxide, smooth muscle layer C. nitric oxide, lymphatic system D. carbon monoxide, endothelium E. norepinephrine, endothelium