Enzymes and Chemical Reactions (U1 S4)

Question 1

A chemical reaction starts with the ___________.

Accepted Answer

reagents

Question 2

The ability to move or change matter is called _________.

Accepted Answer

energy

Question 3

The energy needed to start a chemical reaction is called ___________________.

Accepted Answer

activation energy

Question 4

Intestinal Protease, which resides in our intestines, prefers a(n) ____________ environment.

Accepted Answer

basic

Question 5

Which of the following affects the ability of enzymes to function? (There are two possible answers!)

Accepted Answer

pH, temperature

Question 6

Substances that increase the speed of chemical reactions are called ___________.

Accepted Answer

enzymes, catalysts

Question 7

Newly formed substances from chemical reactions are called ___________.

Accepted Answer

products

Question 8

The term used to describe all of the chemical reactions that occur within an organism is called ______________.

Accepted Answer

metabolism

Question 9

Deep pockets or folds in an enzyme are called the ________________.

Accepted Answer

active sites

Question 10

Endothermic reactions __________ energy as heat.

Accepted Answer

absorb

Question 11

TRUE OR FALSE - Enzymes work by lowering the activation energy of a chemical reaction.

Accepted Answer

True

Question 12

The substance on which an enzyme acts during a reaction is called the _____________.

Accepted Answer

substrate

Question 13

Gastric Protease, an enzyme that resides in our stomach, prefers a(n) ____________ environment.

Accepted Answer

acidic

Question 14

Exothermic reactions __________ energy as heat.

Accepted Answer

release

Question 15

TRUE OR FALSE - Enzymes are destroyed after they act upon a substrate.

Accepted Answer

False

Questions 15