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TLS Online TPP Program

#Question id: 320

The aggregation of nonpolar molecules or groups in water is thermodynamically due to the

#Unit 1. Structure and Function of Biomolecules

  1. increased entropy of the nonpolar molecules when they associate.

  2. decreased enthalpy of the system.

  3. increased entropy of the water molecules.

  4. very strong van der Waals forces among the nonpolar molecules or groups.

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TLS Online TPP Program

#Question id: 512

#Unit 1. Structure and Function of Biomolecules

Arsenate affects glycolysis as it

A) competes with NAD+ for the binding site in 1,3-bisphosphoglycerate.

B) competes with phosphate for its binding site in glyceraldehyde 3-phosphate dehydrogenase.

C) produces a stable analog of 1,3-bisphosphoglycerate.
TLS Online TPP Program

#Question id: 513

#Unit 1. Structure and Function of Biomolecules

Arsenite

A) poisons by the same mechanism as arsenate.

B) is less toxic than arsenate.

C) binds tightly to lipoamide sulfur atoms.
TLS Online TPP Program

#Question id: 514

#Unit 1. Structure and Function of Biomolecules

Mutases are described as
TLS Online TPP Program

#Question id: 515

#Unit 1. Structure and Function of Biomolecules

Which amino acidʹs residue plays a role in the phosphoglycerate mutase reaction in glycolysis for muscle and yeast?
TLS Online TPP Program

#Question id: 516

#Unit 1. Structure and Function of Biomolecules

Which of the following elements is required for the enzymatic reaction that produces phosphoenolpyruvate?
TLS Online TPP Program

#Question id: 517

#Unit 1. Structure and Function of Biomolecules

Which of the following is not regulated in glycolysis?