For an organ transplant to be successful, which of the following genes should be matched as closely as

possible?
A. Immunglobin genes D. Membrane attack complex genes
B. Human leukocyte antigen genes E. Complement protein genes
C. T-cell receptor genes


B

Biology & Microbiology

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Light consists of units of energy called  

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Which one of the following is considered to be an important plant hormone that helps plants cope with environmental stresses?

A. Auxins.B. Prostaglandins. C. Ethylene. D. Abscisic acid. E. Cytokinins.

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Leptospirosis

A. is communicable. B. is contracted by the fecal-oral route. C. is strictly transmitted by sexual contact. D. has only humans as a reservoir. E. can be contracted from the environment.

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Mitotic cell division functions in all of the following except to _____.

A) increase body size through growth B) replace worn-out or dead cells C) repair injured tissues D) produce gametes or spores

Biology & Microbiology