The part of the brain that integrates internal activities is the
A. cerebellum.
B. pituitary gland.
C. thalamus.
D. hypothalamus.
Answer: D
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Which of the following are not transported in phloem?
A. sugars B. amino acids C. hormones D. large starch molecules E. RNA
The greatest genetic differences found in humans are
A) found between individuals from different continents. B) found between individuals of different racial groups. C) found between island populations and mainland populations. D) found between individuals of African descent. E) found between individuals of European descent.
If a human gene mRNA were placed into a cell of yeast, it would be:
a. degraded immediately. b. translated into a repeating amino acid chain. c. translated into a chain of random amino acids not resembling the protein in humans. d. translated into the protein that is found in humans. e. integrated into the genome of the yeast.
Cell walls containing ________ provide the best protection from drying
A) polysaccharides B) triglycerides C) waxes D) peptidoglycan E) sterols