Mismatch repair, base excision repair, and nucleotide excision repair are similar in that (select all that apply):
A. each repairs a single mismatched base.
B. each repairs a short strand of mismatched
nucleotides.
C. each repairs multiple mismatched or
damaged bases across a region.
D. each uses an undamaged segment of
DNA as the template to repair a damaged
segment of DNA.
E. none of these.
D
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The subunits of a ribosome are referred to as being 40S. The "S" refers to ________.
Fill in the blank(s) with the appropriate word(s).
Megakaryocytes
A. give rise to platelets. B. produce fibrin for blood clotting. C. carry carbon dioxide in the blood. D. are important in the immune response.
You have a series of cells, some of which are cancerous. How might you determine which cells are cancerous?
A. Identify the cells that are not dividing uncontrollably. B. Identify the cells that have increased rates of cell death. C. Identify the cells with abnormal chromosome number or structure. D. Identify the cells that utilize Ras protein for growth inhibitory signals.
Secondary lymphoid tissues
A) are neutrophils and eosinophils. B) are monocytes and dendritic cells. C) are where formed elements in blood are produced. D) filter lymph and sample surrounding body sites for antigens which are brought into contact with the leukocytes that reside in secondary lymphoid tissues to stimulate an immune response. E) are where leukocytes mature.