A muscle fiber is made up of many
A. bursa.
B. muscle cells.
C. T tubules.
D. fascicles.
E. myofibrils.
Answer: E
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Yops proteins, produced by Yersinia pestis,
A. interfere with phagocytosis. B. activates plasminogen activator. C. destroys C3b and C5a. D. promotes apoptosis.
Different forms of a gene are known as
a. alleles. b. hybrids. c. recessives. d. genotypes. e. phenotypes.
Provide a brief summary for the fate of each of the three germ layers. What will be an ideal response?
Which evidence is consistent with the endosymbiotic hypothesis for the origin of the mitochondrion?
A. Mitochondria have their own ribosomes and manufacture their own proteins. B. Mitochondria are much smaller than an average bacterium. C. Streptomycin inhibits eukaryotic and mitochondrial ribosomes. D. All genes vital for the functioning of mitochondria are found in the nucleus.