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Grad School Human Physiology Quiz on Human Physiology, created by samantha.rae.dau on 13/06/2014.

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Human Physiology

Human Physiology

Question 1 of 13

1

The general term that describes energy stored in chemical bonds is

Select one of the following:

  • entropy

  • potential energy

  • bioenergetics

  • kinetic energy

  • thermodynamics

Explanation

Question 2 of 13

1

Activation energy is

Select one of the following:

  • the energy required to bring molecules into a position where they can interact

  • required to convert an endergonic reaction to an exergonic reaction

  • the energy lost or gained in a reaction

  • the energy required for an endergonic reaction

Explanation

Question 3 of 13

1

A reversible reaction is one where

Select one of the following:

  • there are small changes in the net free energy from substrate to product

  • a reaction between products is unlikely due to the high activation energy

  • there is no change in the net free energy from substrate to product

  • there are large changes in the net free energy from substrate to product

Explanation

Question 4 of 13

1

The addition of a phosphate group to a substrate is called _________. The enzyme that catalyzes this reaction is referred to as a _________.

Select one of the following:

  • proteolysis; phosphatase

  • phosphorylation; kinase

  • proteolysis; kinase

  • phosphorylation; phosphatase

Explanation

Question 5 of 13

1

When an enzyme's activity is destroyed by heat or a change in pH, the enzyme is said to be

Select one of the following:

  • tertiary

  • toxic

  • conjugated

  • broken

  • denatured

Explanation

Question 6 of 13

1

A competitive inhibitor binds to

Select one of the following:

  • the surrounding tissue

  • a region of the enzyme other than the active site

  • the active site

  • the product

  • the substrate

Explanation

Question 7 of 13

1

An allosteric modulator binds to

Select one of the following:

  • the substrate

  • a region of the enzyme other than the active site

  • the product

  • the surrounding tissue

  • the active site

Explanation

Question 8 of 13

1

Which can serve as substrates for ATP production

Select one of the following:

  • glucose only

  • amino acids only

  • glucose and fatty acids only

  • glucose, amino acids and fatty acids

  • fatty acids only

Explanation

Question 9 of 13

1

ATP synthase transfers the ________ energy of the H+ ions to the high-energy phosphate bond of _________.

Select one of the following:

  • potential; NADH

  • potential; ATP

  • kinetic, ATP

  • kinetic; NADH

  • None of the answers are correct

Explanation

Question 10 of 13

1

After forming a complex with the ribosome, mRNA interacts with a third molecule. This molecule is called

Select one of the following:

  • rRNA

  • rough ER

  • an amino acid

  • tRNA

  • DNA

Explanation

Question 11 of 13

1

All of the triplet codes needed to produce exactly one functional piece of RNA are found in one

Select one of the following:

  • anticodon

  • gene

  • codon

  • chromosome

  • None of the answers are correct

Explanation

Question 12 of 13

1

The enzymes that sythesize mRNA from the start codon are called

Select one of the following:

  • lactate dehydrogenases

  • DNA polymerases

  • ribonucleases

  • ATP synthases

  • RNA polymerases

Explanation

Question 13 of 13

1

Which of the following is a key intermediate of glucose catabolism to the citric acid cycle

Select one of the following:

  • glucokinase

  • oxygen

  • lactate

  • ATP

  • pyruvate

Explanation

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