Humans are unique among animals due to our highly evolved repertoire of sensory receptors.
Answer the following statement true (T) or false (F)
False
Although humans have large and highly developed brains, our sensory receptors are typical of many vertebrates.
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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
Kinases and phosphatases are essential in the cell because they
A) help turn proteins "on and off" through changes in phosphorylation status. B) are enzymes that destroy damaged proteins. C) sense short poly-A tails in mRNA as a signal to degrade the mRNA. D) destroy second messengers, thereby turning off a signal transduction pathway. E) all of the above
The acid growth hypothesis links
A. oligosaccharins to pH changes. B. cytokinin to thigmonasty. C. auxin to cell wall expansion. D. gibberellin to root elongation. E. ethylene to leaf abscission.
Grapes, tomatoes, citrus fruits, pumpkins, watermelons, and cucumbers are all considered ____
a. aggregate fruits b. dry fruits c. multiple fruits d. berries e. pomes