In most cases, the term auxin refers to ____
a. abscisic acid
b. indole-3-acetic acid
c. jasmonic acid
d. nitric oxide
e. salicylic acid
ANSWER: b
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For hormones that homeostatically regulate cellular functions, _____
A) negative feedback typically regulates hormone secretion B) the circulating level of a hormone is held constant through a series of positive feedback loops C) both lipid-soluble hormones and water-soluble hormones bind to intracellular protein receptors D) endocrine organs release their contents into the bloodstream via specialized ducts E) it is impossible to also have neural regulation of that system
While other types exist, Type II restriction endonucleases are by far the most commonly used enzymes for genetic engineering
Indicate whether the statement is true or false.
The immune system normally discriminates between ________ antigens.
A. primary and secondary response B. B and T cells C. self and nonself D. humoral and cell-mediated
Bradykinin causes vasodilation by stimulating the release of what substance from endothelial cells?
A) thromboxane A2 B) nitric oxide C) cyclooxygenase D) arachidonic acid E) endothelin I