An animal with a diploid number of 36 chromosomes will have ____ chromosomes in its gametes and ____
chromosomes in its somatic cells.
a. 18; 18
b. 18; 36
c. 36; 18
d. 36; 36
e. 36; 72
b
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See the genetic code table above. The start codon for translation directs incorporation of which amino
acid?
a. lysine b. phenylalanine c. methionine d. glycine e. no amino acid is encoded; the start codon simply begins the process
A pathogenic virus has a new mutation in one of the coat proteins, that just happens to resemble the structure of a normal human protein present in glial cells of the CNS. What do you predict may be an outcome of infection by this virus?
A. The initial response to the virus will be strong, but will then be shut down by immunological tolerance. B. An autoimmune disease of the brain may develop. C. The innate immune system will ignore the pathogen, but the acquired immune system will attack it. D. The membrane attack complex will be unable to burst the viral membrane.
All vertebrate embryos have _____ at some point during embryonic development, indicating a common evolutionary
ancestor.
a. analogous structures b. four limb buds, a tail, and somites c. two limb buds and a tail d. a backbone and four limb buds e. back vertebrae, two limb buds, a tail and somites
Plant cells that give rise to two cells, one of which is free to differentiate into various kinds of cells that contribute to the plant body, are called
A. meristematic cells. B. parenchyma cells. C. lateral cells. D. primary cells. E. endodermal cells.