3.9c

Which statement explains the effect of an inhibitor on an enzyme?

• A substrate will be able to bond with the enzyme.

• The enzyme will likely be attacked by immune cells.

• The enzyme will be unable to produce more enzymes.

• A substrate will be unable to attach to the enzyme.

Enzymes are capable of increasing the rate of a chemical reaction within a living cell.  Enzymes accomplish this through which of the following means?

• reducing the number of products   

• reducing the activation energy

• increasing the temperature of the cell

• increasing the concentration of reactants 

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-5

Letter B...

• active site

• enzyme

• substrate

• products

Letter C...

• active site

• enzymes

• substrate

• products

Which letter represents amplitude? (a)  

• A

• B

• C

• D

• E

Tags

NGSS.MS-PS4-1

Enzymes are _______________ that _____________________ chemical reactions by ____________ the amount of activation energy required to start the reaction.

• carbohydrates, slow down, lowering

• proteins, speed up, increasing

• lipids, speed up, lowering

• proteins, speed up, lowering

Enzymes are proteins that have a three-dimensional shape that is specific to a particular substrate. Environmental conditions can change the shape of the protein. What is the most likely result if the shape of the enzyme changes?

• the substrate will change its shape to match the enzyme

• the enzyme will no longer be able to catalyze the reaction with the substrate

• the products made from the enzyme and the substrate will be changed

• the enzyme will be able to bind to more diverse substrates than before

The graphs show the reaction rate for an enzyme across a range of temperatures and pH. Based on these data, the enzyme functions best at what temperature and pH?

• temperature of 27 degrees C and pH of 4

• temperature of 37 degrees C and pH of 6

• temperature of 40 degrees C and pH of 8

• temperature of 50 degrees C and pH of 10

Enzymes are an example of

• Lipids

• Carbohydrate

• Protein

• Nucleic Acid

Tags

NGSS.HS-LS1-1

What is the purpose  of an enzyme?

• give permission for the reaction

• raise activation energy

• speed up reactions

• control how many reactions occur