For pure water, which has a pH of 7.0, which of the following is true?
a. [H+] < [OH?]
b. [H+] = [OH?]
c. [H+] = 0
d. [OH?] = 0
e. [H+] > [OH?]
B
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Which of the following is the best definition of autoimmune disease?
A) a condition in which B cells and T cells respond independently to antigens and do not interact correctly B) a condition in which the adaptive immune system fails to recognize the second infection by the same antigen C) a condition in which self molecules are treated as non-self D) a condition in which the immune system creates random antibodies without being triggered by an antigen
Flagellated protozoans possess a layer of
elastic proteins just beneath the plasma membrane called the
a. pellicle. b. cilium. c. capsule. d. pillus. e. flagellum
Identify two ways in which posttranscriptional gene regulation occurs in eukaryotes and briefly
explain each. What will be an ideal response?
If the ?G of a reaction was -31.45 kJoules, you would know that:
A. the products have more free energy than the reactants. B. the reaction is spontaneous. C. the reaction most likely leads to development of a more ordered system. D. the reaction requires an energy input of 31.45 kJoules to proceed.