Four of the following statements are ways in which pathogenic fungi can kill plant tissue. Which one is the exception?
A. Decreasing water absorption
B. Depriving plants of sugars it needs
C. Breaking down rocks by releasing acids
D. Reducing nutrients for seed production
E. Secreting toxins
Answer: C
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There are eight total steps in the citric acid cycle, and pyruvate is completely oxidized in steps three
and four. What is the purpose of the last four steps that occur in the cycle?
a. to replenish the supplies of NAD+ and FAD b. to break down glucose into a three-carbon molecule c. to regenerate oxaloacetate to attach another acetate molecule d. to produce ATP by substrate-level phosphorylation e. to produce ATP by oxidative phosphorylation
Every protein is assembled on ____ according to instructions that are copied from ____
a. mRNAs; tRNAs b. tRNAs; mRNAs c. ribosomes; mRNA d. tRNAs; DNA e. ribosomes; DNA
Marine snow is composed of:
a. inorganic nutrients. b. flocculated marine salts. c. particulate organic matter. d. frozen seawater. e. terrestrial materials.
What is the function of adipose tissue?
a. energy storage b. cushion the organs c. protection d. insulation e. all of these