The youngest leaf primordium is produced closest to the stem tip because:
A. Auxins are closest to the tip.
B. The tip is elongating outward.
C. The leaf primordial only respond to light.
D. The primordial lack a sense of direction.
E. Expansion genes do not function well in aging tissue.
B. The tip is elongating outward.
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Many West Nile virus infections are not properly identified because
A) the disease mimics malaria. B) the symptoms are often subacute. C) the disease is frequently fatal. D) most physicians and diagnosticians are not aware of this disease.
True or False: rubisco can function as either a carboxylase or an oxygenase
A. true B. false
What is a lysosome's role in intracellular digestion?
a. absorption b. enzymatic digestion c. filtration d. mechanical digestion e. produces energy
Which of the following will not prevent the further buildup of greenhouse gases?
a. Plant a tree or, better yet, plant many trees. b. Use your automobile less, and ride a bicycle more. c. Produce less waste that goes to landfills. d. Buy an air conditioner that uses chlorofluorocarbons. e. Buy an automobile that is more fuel-efficient.