MC - Biochemistry Quiz - L8-L11

A non-competitive inhibitor of an enzyme catalyzed reaction (select one or more)

binds to the Michaelis complex (ES)

decreases Vmax

Is without effect at saturating substrate concentrations

Can actually increase reaction velocity in rare cases.

In order to combine enthalpy and entropy, entropy must be first

added to the mass of the species

multiplied by the temperature of the reaction in Kelvin

divided by the volume of the species

How many total molecules of ATP are synthesized from ADP via glycolysis of a single molecule of glucose?

For catabolism you need ________

ATP

ADP+P

AMP+PP

All of the above

Ligands are signaling molecules that bind to receptors. Which of the following statements is true of ligands?

All ligands are proteins.

Each ligand is only able to bind to one specific receptor

Ligands can bind to cell-surface receptors, but they cannot enter the cell

Ligands bond to receptor proteins and cause the protein to relay a message to intracellular proteins.

Three reactions of glycolysis are so exergonic, which are not catalyzed by

Hexokinase

PFK-1

Pyruvate dehydrogenase

Pyruvate kinase

When concentration of the reactants is higher than the equilibrium concentration then

the gibbs free energy will be positive

the gibbs free energy will be negative

more products will be formed

both (b) and (c)

Which of the following glucose transporter (GLUT) is important in fructose transport in the intestine?

GLUT1

GLUT3

GLUT5

GLUT7

Minimum number of carbons required for an aldose and ketose sugar to have a cyclic structure is___.

3,4

4,5

5,4

4,4

Which of the following represent CK1 (Hint: B domain more negative than M domain)

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