Mycorrhizae are formed by the association of plants with ________.
A. cyanobacteria
B. fungi
C. algae
D. actinomycetes
Answer: B
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What is the importance of consuming an adequate amount of proteins in the diet?
A) They are most commonly used to meet energy demands of cells. B) Proteins serve a variety of functions, and the body does not store excess quantities of protein. C) They are used as cofactors for metabolic reactions and are required in minute quantities. D) Proteins are necessary to produce urea and other important metabolites.
A mutant that has a nutritional requirement for growth is an example of a(n)
A) autotroph. B) auxotroph. C) heterotroph. D) organotroph.
A drug called ouabain specifically inhibits the sodium-potassium pump present in neuron cells. Over time, what would this action of ouabain cause?
A) the inside of the neuron to become more negative B) repolarization C) elimination of a concentration gradient D) more potassium to be transported into the neuron
This is the genetic material for all cellular organisms and some viruses.
A. chromatin B. RNA C. protein D. DNA