Some restaurants serve seafood platters that contain oysters, mussels, and clams. Such platters therefore consist of ________.
A. sponges
B. gastropods
C. mollusks
D. cnidarians
Answer: C
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Which of the following statements is not true of the amino acids?
A) There are more than 60 different kinds of amino acids present in cells. B) The R group of amino acids differs from one amino acid to another. C) Only around 20 amino acids are used in protein synthesis. D) All amino acids exist in two stereoisomeric forms. E) Amino acids have an N-terminus, C-terminus, and R groups.
The classification of a surgical wound as dirty refers to a:
a. lack of cleanliness of the surgical instru-ments. b. surgical wound in an emergency setting in which the cleansing protocol was not fol-lowed. c. surgical wound that has become grossly infected. d. large number of contaminating organisms at the wound site.
The ________, which acts as a brake on cell division, was discovered in studying the eye cancer retinoblastoma.
Fill in the blank(s) with the appropriate word(s).
When a chemical reaction is at equilibrium, which of the following statements is always TRUE?
a) the equilibrium constant (keq) equals 1 b) the ratio of the concentrations of reactants and products equals 1 c) the rate of the forward reaction is equal to the rate of the backward reaction d) all of the choices are correct