LESSON 3

Question 1

ability to do work

Answer 1

ENERGY

Question 2

Organic molecules that store energy

Answer 2

FOOD

Question 3

How do organisms get energy?

Answer 3

Autotrophs
Heterotrophs

Question 4

Use energy from the sun

Answer 4

Autotrophs

Question 5

Make their own food
a.k.a. producers
e.g. plants, algae, cyanobacteria

Answer 5

Autotrophs

Question 6

can’t make their own food
“eat” other organisms
Ee.g. animals, fungi, bacteria

Answer 6

Heterotrophs

Question 7

energy stored in glucose is released in the process

Answer 7

Cellular respiration

Question 8

store smaller amount of energy energy-carrying molecule in cell

Answer 8

ATP

Question 9

energy stored is released by breaking of phosphate bonds

Answer 9

Energy giving molecules

Question 10

Substance that increases the rate of chemical reaction

Answer 10

Catalyst

Question 11

• Catalysts found in living things • e.g. enzymes

Answer 11

Biological catalyst

Question 12

in living things that increase rate of biochemical reactions or chemical reactions in living things

Answer 12

Catalyst

Question 13

Most heavily folded proteins
• Some need the help of non- protein organic compounds called

Answer 13

Enzymes
Cofactors

Question 14

• NOTE: substrate = substance whose reaction the enzyme catalyzes
• Highly specific

Answer 14

Enzyme substratum complex

Question 15

Breaking down of glucose into simpler molecules
– 3-carbon pyruvic acid molecules
• Occurs in the cytosol

Answer 15

Aerobic respiration: Glycolysis

Question 16

Cycle of enzyme-controlled reactions • Occurs in the mitochondria (in
eukaryotes)
• Requires the acetyl-CoA from previous process

Creates 2 ATP, 6 NADH, 2 FADH2 and many CO

Answer 16

Aerobic
Respiration:
Krebs Cycle

Question 17

Series of proton pumps on the inner membrane of the

Answer 17

Mitchondrion

Question 18

Occurs in the mitochondrion

Answer 18

Cristae

Question 19

Uses the energy from the NADH and FADH2
• Uses oxygen as final electron acceptor creating water mole

Answer 19

Aerobic respiration ETC