Two species of three-spined stickleback fish live in a single lake in British Columbia. They are closely related but occupy different niches. They exist nowhere else. These species most likely arose by sympatric speciation from a single species of three-spined stickleback.
Answer the following statement true (T) or false (F)
True
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Which of the following is NOT a function of cellular junctions?
A. Cellular junctions hold adjacent cells together. B. Cellular junctions prevent leakage of materials between cell layers. C. Cellular junctions permit the direct exchange of small molecules between cytosol of adjacent cells. D. Cellular junctions bond cells to their ECM. E. Cellular junctions promote the motility of adjacent cells.
Staphylococcus aureus can be identified by mixing the organism with specific antibody and visually recognizing a clumping reaction between the antigen and the antibody. This is a(n) ________ test.
A. biochemical B. ELISA C. microarray D. agglutination
During which phase(s) of aerobic respiration is ATP produced directly by substrate-level phosphorylation?
a. glycolysis only b. Krebs cycle only c. acetyl CoA formation only d. the Krebs cycle and glycolysis e. glycolysis, acetyl CoA formation, and Krebs cycle
An effective vaccine does all of the following
EXCEPT a. produce a mild case of the disease. b. stimulate the production of effector T cells. c. cause memory cells to be formed. d. stimulate the production of effector B cells. e. produce passive immunity.