Henry has the sickle-cell trait. Why might it be a bad idea for him to go on that hiking vacation that is being planned for the high Andes?

What will be an ideal response?


Sickling of the red blood cells can occur if the bearer of the gene travels to areas of high elevation with lower oxygen concentrations.

Biology & Microbiology

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The MOST common source of individual foodborne botulism outbreaks are due to

A) honey. B) dairy products. C) nonacid, home-canned vegetables. D) egg and meat salads.

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A polypeptide chain is composed of:

a. amino acids b. proteins c. nucleic acids d. fatty acids e. monosaccharides

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The respiratory pacemaker is located in the

a. lungs. b. cerebral cortex. c. brain stem. d. bronchioles. e. alveoli

Biology & Microbiology

Proteasomes direct the destruction of defective DNA

__________________Indicate whether the statement is true or false.

Biology & Microbiology