Enzymes and Biochemical Reactions

How do enzymes speed up chemical reactions? Enzymes

• lower the activation energy of chemical reactions.

• raise the temperature of the cell, speeding chemical reactions.

• store ATP, allowing more energy to be used in chemical reactions.

• act as miniature "transfer trucks", gathering materials for chemical reactions, and placing them together.

What is the optimum temperature for this enzyme?

• 20 degrees Celsius

• 45 degrees Celsius

• 52 degrees Celsius

• 64 degrees Celsius

Which suffix (word ending) is used in the names of most enzymes?

• -ase

• -in

• -ine

• -ose

What can be inferred using the graph?

• Cells can function equally as well at all pH values.

• Cells do not function well at pH values that are too high or too low.

• Cells function best at high pH values.

• Cells function best at low pH values.

Each enzyme produced by the body is

• open - meaning it is able to catalyze a reaction with any molecule.

• immature - meaning it cannot catalyze a reaction until many years later.

• incomplete - meaning it requires other parts before it is able to bind to a molecule.

• specific - meaning it is only able to catalyze a rection with a certain molecule.

Which of the following two factors affect an enzyme's operation the most?

• amount of light and temperature

• blood glucose and pH

• temperature and pH

• amount of light and pressure

What substances are formed as a result of this reaction?

• hydrogen peroxide and water

• water and oxygen

• hydrogen peroxide and oxygen

• water and ozone

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is the optimum pH for the enzyme salivary amylase?

• 2

• 5

• 6.2

• 9.1

Enzymes are a type of which macromolecule?

• carbohydrate

• lipid

• protein

• nucleic acid

Tags

NGSS.HS-LS1-1

Why are enzymes needed for life?

• They speed up all the chemical reactions in living things.

• They are the main proteins that make up our body structure.

• The provide energy to all living things.

• They provide genetic information.