Chemical Reactions Enzymes

Letter B...

• active site

• enzyme

• substrate

• products

Letter C...

• active site

• enzymes

• substrate

• products

Tags

NGSS.MS-LS1-7

An enzyme speeds up a reaction by

• lowering the activation energy.

• raising the activation energy.

• releasing energy.

• absorbing energy.

Tags

NGSS.HS-PS1-4

The molecule an enzyme is working on is called the:

• Substrate

• Solvent

• Allosteric Inhibitor

• CoEnzyme

SC. 912.L.18.1 Some proteins catalyze biochemical reactions. If a genetic defect prevented a protein catalyst from being produced, which of the following do you predict would happen in the cell?

• The cell would find a different type of protein to catalyze the reaction.

• The reaction the protein catalyzes would proceed very slowly or not at all.

• The reaction the protein catalyzes would only occur in some places in the cell.

• The reverse reaction of the one the protein catalyzes would begin to proceed.

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-2

Which best explains why the rate of biochemical reaction decreases at high temperatures?

• The activation energy increases

• The shape of the enzyme changes

• The enzyme-substrate complex forms

• The bonds between substrates are broken

Which best explains why the rate of a biochemical reaction decreases at high temperatures?

• The activation energy increases.

• The shape of the enzyme changes.

• The enzyme-substrate complex forms.

• The bonds between substrates are broken.

Tags

NGSS.HS-PS1-5

Some proteins catalyze biochemical reactions. If a genetic defect prevented a protein catalyst from being produced, which of the following do you predict would happen in the cell?

• The cell would find a different type of protein to catalyze the reaction.

• The reaction the protein catalyzes would proceed very slowly or not at all.

• The reaction the protein catalyzes would only occur in some places in the cell.

• The reverse reaction of the one the protein catalyzes would begin to proceed.

Tags

NGSS.HS-LS3-2

Which of these is NOT true?

• Enzymes can denature (change shape) when the temperature gets too high.

• Enzymes can only be used once in a chemical reaction. 

• Extreme pH can denature enzymes.

• Enzymes speed up chemical reactions. 

What is a substance called if it speeds up a chemical reaction?

• reusable

• catalyst

• specific

• fragile