In which blood vessels is blood pressure the lowest?
A) arteries
B) capillaries
C) veins
D) left ventricle
C
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Long-term memory involves:a
holding seven chunks of information at a given time. b. meaningfully associating stimuli with past knowledge. c. strengthening connections between the pons and cerebral cortex. d. filtering out nonessential information and stimuli. e. the hypothalamus placing our experiences in categories
The diversity in a kelp forest community can be measured by
A. the number of kelp living in the community. B. the number of fishes living in the community. C. the abiotic resources utilized by the community. D. the number of niches in the community. E. the number of different species of living organisms in the community.
The neck of open culture tubes should be sterilized after removing the cap and before replacing the cap. Open tubes should always be ___________ to minimize the possibility of airborne contamination.
A) held at an angle B) labeled with tape C) carried in a sleeve D) inoculated with the nondominant hand
A stomach cell is producing pepsin, an enzyme that hydrolyzes proteins. Which of the following events suggests that gene expression of pepsin has been turned off in the cell?
A) The pepsin protein is folded properly in the cytoplasm. B) The chromosome with the pepsin gene is tightly coiled. C) The pepsin mRNA leaves the nucleus and enters the cytoplasm. D) Activators and RNA polymerases are abundant in the nucleus.