Which of the following would probably not be affected when a protein is denatured?

A. primary structure
B. secondary structure
C. hydrogen bonds
D. tertiary structure
E. All of the above must be affected for the protein to be denatured.


Answer: A. primary structure

Biology & Microbiology

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During which phase of cellular respiration is the majority of ATP formed?

A. Glycolysis B. The Krebs cycle C. Electron transport system D. Processing of pyruvic acid for the Krebs cycle E. All phases produce the same number of ATP molecules.

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Transmembrane movement of a substance up a concentration gradient requires ________ transport

Fill in the blank with correct word.

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One of the disadvantages of the C4 pathway is that it requires ________ than C3 photosynthesis.

A. more light B. a much higher temperature C. more NADPH D. more ATP E. more O2

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What supplies the energy for muscle contraction?

A. actin B. Ca2+ C. myosin D. ATP E. tropomyosin

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