Enzymes ____.
A. control the speed of a reaction
B. form chemical bonds with substrates to facilitate certain reactions
C. may place physical stress on the bonds of the substrate
D. always work on their own
E. lower activation energy
Answer: E
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Which of the following is not a product of the TCA cycle?
A) CO2 B) ATP C) NADH D) acetyl CoA E) FADH2
When utilizing fats as an energy source, the glycerol portion enters the ________ when it has been converted to ________.
A) TCA cycle; pyruvate B) glycolysis; fructose-6-phosphate C) TCA cycle; acetyl CoA D) electron transport system; CoQ E) glycolysis; dihydroxyacetone phosphate
Given that oxygen is toxic to anaerobic bacteria, describe how they must have adapted to survive in the present environmental conditions on Earth
What will be an ideal response?
Sections of the geologic timescale are defined by:
A) the age of the rocks. B) whether the rocks are metamorphic or sedimentary. C) how close the rocks are to the surface of the earth. D) the kinds of fossils present.