The anti-bacterial peptides secreted by frogs and toads is produced by:
a. epithelial cells.
b. goblet cells.
c. endothelial cells.
d. sweat glands.
e. oil glands
A
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Explain the purpose and uses of the chi-square test.
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Evolution does not violate the second law of thermodynamics because
A. evolution is a random process; it does not require an input of energy. B. Earth is not a closed system; it constantly receives an input of energy from the sun. C. living organisms are not subject to the second law. D. the disorder generated by extinction balances the order created by evolution.
When referring to membrane glycolipids and glycoproteins, what does the prefix "glyco-" indicate?
a. polar carbohydrate groups that are attached to the molecules b. nonpolar carbohydrate groups that are attached to the molecules c. the molecules that are attached to the membrane by ionic bonds d. the molecules that are attached to the membrane by covalent bonds
Lipid A is a(n) (cytotoxin/endotoxin/exotoxin) that stimulates the body to release chemicals that cause fever, inflammation, diarrhea, hemorrhaging, shock, and blood coagulation
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