Which of the following "buds off" of the Golgi complex?
A) Cytoskeleton B) Ribosomes C) Vesicles D) Cells E) Nuclei
C
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One can inject dyes of different sizes into a liver cell and determine those molecules that can readily pass through gap junctions. What sized molecules can pass through gap junctions?
A. <1,000 Daltons B. >1,000 Daltons, but <1,500 Daltons C. >10,000 Daltons D. >5,000 Daltons, but <10,000 Daltons E. >1,500 Daltons, but <5,000 Daltons
Comparisons between the cytochrome b protein sequence in the honeycreeper versus the deer mouse and the Gough
Island finch reveals eighteen and four amino acid differences, respectively. Therefore, _____.
a. the honeycreeper is more closely related to the deer mouse b. the honeycreeper and the Gough Island finch are the same species c. the honeycreeper is more closely related to the Gough Island finch d. no DNA mutations have occurred during the evolution of the honeycreeper e. the DNA sequences of all three species are identical
The brain uses a lot of glucose. How does glucose pass through the blood-brain-barrier?
A. Glucose Channels B. Simple Diffusion C. Aquaporins D. Transporters
Vaccines contain
A) memory cells against the pathogen. B) antigens of the pathogen. C) antibodies of the pathogen. D) lymphokines. E) T cells programmed to attack the pathogen.