In a human cell at prophase I, there are ____ tetrads
a. 92
b. 46
c. 23
d. 2
e. 4
c
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The "hematocrit" is a measure of the total volume of which blood constituent?
A. plasma B. leukocytes C. erythrocytes D. platelets E. None of the choices for this question are correct.
Which of the following statements about plants grown in hydroponic culture is true?
A. They rarely get enough micronutrients. B. They cannot be used for commercial purposes. C. They no longer need to transport water through their xylem. D. They are unable to photosynthesize. E. They are suspended with their roots in a nutrient solution.
If both parents are homozygous for a disease-causing recessive gene, ____________________ of their children will be
affected. What will be an ideal response?
Bordetella pertussis produces (adenylate cyclase/dermonecrotic/pertussis) toxin which disrupts blood supply to respiratory tissues.
Fill in the blank(s) with the appropriate word(s).