Enzymes

What are isoenzymes?

• Enzymes that are tissue specific but catalyze the same reactions

• Enzymes that exist in the same tissue but catalyze different reactions

• Enzymes that are tissue specific and catalyze different reactions

• Enzymes that exist in the same tissue and catalyze the same reactions

What is the difference between a coenzyme and a cofactor?

• Coenzymes are inorganic, cofactors are organic

• Coenzymes are organic, cofactors can be organic or inorganic

• Coenzymes are complete enzymes, cofactors are inactive

• Coenzymes are inactive, cofactors are complete enzymes

What distinguishes non-genetic variants from genetic variants?

• Non-genetic variants are encoded by distinct genes

• Non-genetic variants involve post-translational modifications

• Genetic variants involve post-translational modifications

• Non-genetic variants have no modifications

Which of the following is an example of an inorganic cofactor?

• NAD

• FAD

• Zn

• NADP

What is a common characteristic of inorganic cofactors?

• They are proteins

• They are vitamins

• They are metal ions

• They are carbohydrates

How many digits are typically in an enzyme's code number?

• Two

• Three

• Four

• Five

How is each enzyme identified in the enzyme nomenclature system?

• By its molecular weight

• By a systematic code number

• By its structural formula

• By its color

What does the term "oxidation" refer to in a chemical reaction?

• Loss of electrons

• Gain of electrons

• Loss of protons

• Gain of protons

Tags

NGSS.HS-PS1-2

For Enzyme nomenclature, what does the first digit represent?

• Major class the enzyme belongs to

• The subclass that looks at what type of chemical reaction the enzyme uses

• The subclass or group being actued upon

• Differentiates between closely related enzymes

For Enzyme nomenclature, what does the second digit represent?

• Major class the enzyme belongs to

• Differentiates between closely related enzymes

• The subclass or group being actued upon

• The subclass that looks at what type of chemical reaction the enzyme uses