A child falls and suffers a deep cut on her leg. The cut went through her skin and she is bleeding. Which of the following defense mechanisms will participate in eliminating contaminating microbes?
A) mucociliary escalator
B) normal skin flora
C) phagocytosis in the inflammatory response
D) acidic skin secretions
E) lysozyme
C
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Which of the following is least likely to be involved in a cell localization regulatory mechanism?
A. steroid hormone receptors B. ubiquitination of proteins C. dephosphorylation of proteins D. sumoylation of proteins
The cytosol is best described as the
A) fluid within the nucleus. B) three-dimensional array of interconnected filaments. C) semifluid substance in which organelles are suspended. D) internal contents of organelles. E) area of the cell not occupied by the nucleus.
Male gonads are __________, which produce sperm
and the sex hormone __________. Fill in the blank(s) with the appropriate word(s).
The breeder's equation describes the relationship between:
a. additive genetic variance and total phenotypic variance. b. the resemblance of parents and offspring. c. the selection differential and the selective response. d. broad-sense and narrow-sense heritability. e. None of the above.