The order of bases in a gene is copied to make a/an:
A) amino acid. B) mRNA. C) gene. D) ribosome.
Answer: B
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Aside from inherited diseases caused by single mutant genes, for the majority of SNPs implicated in disease, how does carrying a copy affect a person's risk for acquiring that disease?
A. It increases it dramatically. B. It increases it moderately. C. It decreases it dramatically. D. It decreases it moderately. E. It decreases it minimally.
Endospores are
A. a dormant cell type. B. a form of reproduction. C. an obligate intracellular parasite. D. sensitive to damaging environmental conditions
Although it contributes no cells to the embryo, this structure guides the formation of the primitive streak:
A) endoderm B) mesoderm C) ectoderm D) neural crest E) hypoblast
The protozoan that causes malaria is an intracellular parasite of red blood cells (RBCs). An adaptive immune response to this parasite is problematic because
A) red blood cells do not produce MHC and, therefore, do not display the fact that they have been infected by presenting antigen. B) the parasite damages leukocytes along with RBCs. C) RBCs normally produce cytokines necessary for adaptive immune response, which this infection prevents. D) complement cannot effectively destroy RBCs. E) RBCs never enter lymphoid tissue.