Of the following groups, which have been in existence the longest?
A) multicellular animals B) gastropods
C) green algae D) cyanobacteria
Answer: D
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The humoral immune response differs from the cell-mediated immune response in that only in the humoral immune response is there
A. a precommitted lymphocyte. B. secretion of antibody. C. a clonal selection mechanism. D. the development of memory cells.
The nervous system structures are derived from ectoderm
Indicate whether the statement is true or false.
________ is/are quality control regulations that govern procedures for human subject experimentation
A) Good clinical practices (GCPs) B) Quality assurance (QA) C) Preclinical testing D) Good laboratory practices (GLPs) E) Good manufacturing practices (GMPs)
The ATP that is produced in the light reactions is used by the cell to
A. reproduce and grow. B. build carbohydrate molecules. C. move electrons through the electron transport chain. D. split water into H+ and O2.