In the early years of microbiology, microorganisms were referred to as ________
cooties
animalcules
zygotes
prokaryotes
animalcules
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The difference between deoxyribose and ribose is that ribose
a. is a six-carbon sugar and deoxyribose has only five carbons. b. bonds only to thymine, not uracil. c. has one more oxygen atom than deoxyribose has. d. is all of the above.
The purpose of irradiating foods is to ____
a. increase the vitamin content b. increase the mineral content c. destroy harmful bacteria, fungi and other microorganisms d. limit spoilage e. both destroy harmful bacteria, fungi, and other microorganisms and limit spoilage
During transmission across a typical chemical synapse
A) neurotransmitter molecules are stored in the synaptic cleft. B) action potentials trigger chemical changes that make the synaptic vesicles fuse with each other. C) vesicles containing neurotransmitters diffuse to the receiving cell's plasma membrane. D) neurotransmitter molecules bind to receptors in the receiving cell's plasma membrane.
Figure 16.2 illustrates an interaction between a(n)
A. antigen presenting cell and a B lymphocyte. B. antigen presenting cell and a helper T lymphocyte. C. NK cell and its target cell. D. cytotoxic T lymphocyte and its target cell. E. antigen presenting cell and a plasma cell.