The definitive published source for bacterial classification is the American Type Culture Collection or ATCC.
a. true
b. false
Ans: b. false
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Which of the following is found most often for protostomes?
a. spiral, indeterminate cleavage b. radial, indeterminate cleavage c. spiral, determinate cleavage d. radial, determinate cleavage e. radial cleavage in juveniles, determinant cleavage in adults
Why does extended hypoglycemia (low blood sugar) lead to confusion and difficulty thinking?
A. Glucose provides energy for brain cells. B. Unregulated pH of body fluids causes these symptoms. C. Glucose is major source of energy for non-nervous system cells. D. Glucose is required for chemical reactions in the body.
Which of the following is a stem modification for storage?
A) tuber B) petiole C) internode D) runner
What statement does not correctly describe hormones that can directly enter a cell?
A. Steroid hormones can enter directly into cells because of their hydrophobic makeup. B. Water-soluble hormones can enter directly into cells because of their nonpolar makeup. C. Once these hormones enter a cell, they bind to a cytoplasmic receptor and travel as a complex to the nucleus, or they may bind to the receptor after entering the nucleus. D. Steroid hormones dissolve poorly in the plasma and are transported to target cells via special protein carriers.