Protein and Enzyme

Which statement best describes what happens to an enzyme after it catalyzes a chemical reaction?

• the enzyme is denatured

• the enzyme is useless and cannot be reused

• the enzyme is left unchanged and and can be reused

• it dissipates and is used up

Which molecule reacts with itself to form this polypeptide chain?

• amino acids

• glucose

• starch

• nucleotide

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-6

Which is a function of a protein?

• Fat storage

• To provide the body with fast energy

• Makes up the cell membrane

• To catalyze chemical reactions

Which of the following lines shows the presence of an enzyme?

• Black

• Red

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-5

What type of macromolecule are enzymes?

• Protein

• Carbohydrate

• Lipid

• Nucleic Acid

Tags

NGSS.HS-LS1-1

Based on the graph, what is the optimal temperature for this enzyme? 

• 15^oC

• 40^oC

• 30^oC

• 35^oC

Changes in pH and temperature can ___________________ an enzyme which causes it to lose its shape and affects its function.

• puncture

• denature

• double

• delete

Which of the following statements is true about catalysts (enzymes)?

• Catalysts slow down the rate of chemical reactions.

• Enzymes help regulate pH.

• Catalysts are used up during a chemical reaction.

• Catalysts lower the activation energy of a chemical reaction.

Tags

NGSS.HS-PS1-5

An enzyme and substrate can be compared to

• lock and key

• a faucet

• a door hinge

• light switch

Each enzyme only has 1 substrate that will fit its active site.  What is this called?

• reusable

• catalyst

• specific

• fragile