AP Biology Enzyme and Energy

A catalyst works by

• changing the order of the reaction
• increasing the temperature
• lowering the activation energy
• making the activated complex

Endergonic reactions require:

• an input of energy
• a release of energy
• do not change energy

Tags

NGSS.HS-PS1-4

Which type of reaction increases entropy?

• Endergonic
• Nonspontaneous
• Synthesis
• Exergonic

The active site of an enzyme can:

• bind allosteric regulators.

• bind competitive inhibitors.

• bind non-competitive inhibitors.

• change the Gibbs Free Energy of the reaction.

Which of the following do not affect enzymes ability to function?

• pH

• substrate concentration

• temperature

• water

In general, enzymes do NOT:

• bind permanently to their substrates

• have names ending in -ase

• have their function changed with extremely high temperatures

• react with a specific substrate

What is being represented by the letter B in the image?

• Substrate

• Enzyme

• reactants

• Product

Tags

NGSS.HS-LS1-7

Enzymes are usually....

• Proteins
• Lipids
• Carbohydrates
• None of the Above

Which of the following is an example of potential rather than kinetic energy?

• the flight of an insect foraging for food
• the muscle contractions of a person mowing grass
• water rushing over Niagara Falls
• a molecule of glucose

Succinate dehydrogenase catalyzes the conversion of succinate to fumarate. The reaction is inhibited by malonic acid, which resembles succinate but cannot be acted upon by succinate dehydrogenase. Increasing the ratio of succinate to malonic acid reduces the inhibitory effect of malonic acid.

Based on this information, which of the following is correct?

• Succinate dehydrogenase is the enzyme, and fumarate is the substrate.

• Succinate dehydrogenase is the enzyme, and malonic acid is the substrate.

• Succinate is the substrate, and fumarate is the product.

• Fumarate is the product, and malonic acid is a noncompetitive inhibitor.

Tags

NGSS.HS-PS1-5