In DNA replication,
A) 23 copies are made of each chromosome.
B) one new copy is made of each chromosome, and the original chromosome remains intact.
C) two new copies are made of each chromosome, and the original chromosome is destroyed.
D) two copies are made of each chromosome, and each copy contains one of the DNA strands from the original chromosome.
E) the chromosome is copied to RNA, which is then copied to DNA for a new chromosome.
D
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An excess of hydrogen ions in the body fluids can have fatal results because this can
A) break chemical bonds. B) change the shape of proteins, rendering them nonfunctional. C) disrupt tissue functions. D) change body fluid pH. E) All of the answers are correct.
Which area of the brain contains neural stem cells that are apparently important in learning and memory?
A. Cerebral cortex B. Temporal lobe C. Subgranular zone of the hippocampus D. Arcuate fasciculus
Due to the pattern of innervation of skeletal muscle, one would expect that
A. there are fewer motor neurons than skeletal muscle fibers. B. the number of muscle fibers and motor neurons is equal. C. there are fewer muscle fibers than motor neurons.
A cut parallel to the midsagittal plane would produce a(n) ________ section
A) frontal B) transverse C) oblique D) parasagittal E) coronal