Enzymes

What is activation energy?

• The energy required to start a chemical reaction

• The energy released during a chemical reaction

• The energy stored in chemical bonds

• The energy used by enzymes to function.

Tags

NGSS.HS-PS1-4

What is the result of lowering the activation energy in a reaction?

• Slower reaction

• Faster reaction

• No reaction

• Reversed reaction

Tags

NGSS.HS-PS1-5

What is the role of the 'Substrate' in an enzyme reaction?

• It acts as a catalyst

• It binds to the active site

• It is the final product

• It breaks down the enzyme.

What happens to the enzyme after the reaction is complete?

• It is consumed

• It is released unchanged

• It becomes a product

• It binds to another substrate.

The lock and key model of enzyme action suggests that:

• A) Enzymes can bind to any substrate

• B) Enzymes are specific to their substrates

• C) Enzymes change shape to fit substrates

• D) Enzymes are not specific

Why are enzymes considered organic?

• A) They are made of lipids

• B) They are made of proteins

• C) They are made of carbohydrates

• D) They are made of nucleic acids

Tags

NGSS.HS-LS1-6

The term 'organic catalysts' refers to:

• Inorganic substances that speed up reactions

• Organic substances that slow down reactions

• Organic substances that speed up reactions

• Inorganic substances that slow down reactions

What happens to an enzyme when it is not in its optimal environment?

• It becomes more active

• It denatures

• It multiplies

• It changes color.

Why can an enzyme no longer function properly after denaturation?

• A) It becomes more rigid

• B) Its active site changes shape

• C) It becomes larger

• D) It changes color.

How does temperature affect enzyme activity?

• It always increases activity

• It can cause denaturation

• It has no effect

• It changes the enzyme's color.

Tags

NGSS.HS-PS1-5