The chemical nature of each amino acid is determined by which of the following groups?
A) amino
B) carboxyl
C) hydroxil
D) R
E) hydrogen
D) R
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Diploid somatic cells of elephants have 56 chromosomes. If nondisjunction of one of an elephant's chromosomes occurs in meiosis I, the resulting sperm are expected to have the chromosome complement:
A. 28, 28, 28, 28 B. 28, 28, 29, 27 C. 29, 29, 27, 27 D. 29, 29, 28, 28 E. 56, 56, 57, 55
Both ATP and NADPH are required for
A. the Calvin cycle only. B. the light reaction only. C. electron transport through the thylakoid membrane. D. both the light reaction and Calvin cycle. E. neither the light reaction nor the Calvin cycle.
In an antibody-mediated immune response,
what do cytokines induce?
a. mitosis b. meiosis c. DNA replication d. protein synthesis e. gene splicing
In a karyotype, the chromosomes are arranged in order from
A. largest to smallest, including the sex chromosomes. B. largest to smallest, with the sex chromosomes at the end. C. smallest to largest, including the sex chromosomes. D. sex chromosomes first and then smallest to the largest. E. smallest to largest, with the sex chromosomes at the end.