Unit 1B - Photosynthesis & Cellular Respiration

Question 1

The starting molecule for glycolysis is

Answer 1

Glucose

Question 2

The Kreb’s Cycle is also known as the

Answer 2

Citric Acid Cycle

Question 3

Glycolysis makes a total of _____ be has a net gain of ____ ATP

Answer 3

4 total

2 net gain

Question 4

The overall purpose of the ETC is to

Answer 4

produce ATP

Question 5

The overall yield of cellular respiration with oxygen is ______ ATP

Answer 5

36

Question 6

For 1 molecule of glucose, how many molecules of ATP are produced with oxygen?

Without oxygen?

Answer 6

36

2

Question 7

How do the products of cellular respiration relate to photosynthesis?

Answer 7

The products of cellular respiration (water and carbon dioxide) are the reactants of photosynthesis

Question 8

Most of the energy generated by aerobic respiration is made during the

Answer 8

Electron Transport Chain

Question 9

When a cell is running low on oxygen it will begin to do

Answer 9

Fermentation

Question 10

Which organisms do each type of fermentation?

Answer 10

Lactic Acid - animals, some fungi, bacteria

Alcoholic - yeast

Question 11

List the products of each type of fermentation

Answer 11

Lactic Acid - lactic acid & NAD⁺

Alcoholic - alcohol, CO₂, and NAD⁺

Question 12

When is energy released from an ATP molecule?

Answer 12

When the bond is broken between the second and third phosphate

Question 13

List the correct sequence of events for cellular respiration (aerobic and anaerobic)

Answer 13

Aerobic -

Glycolysis –> Kreb’s –> ETC

Anaerobic -

Glycolysis –> Fermentation

Question 14

The general formula for cellular respiration is

Answer 14

C₆H₁₂O₆ + 6O₂ –> 6CO₂ + 6H₂O + 36ATP

Question 15

The cause of muscle soreness is

Answer 15

Buildup of lactic acid from lactic acid fermentation

Question 16

Which organisms carry out cellular respiration?

Answer 16

All eukaryotic organisms

(Only things that don’t are anaerobic)

Question 17

The two steps of photosynthesis are

Answer 17

Light Dependent and Light Independent (Calvin Cycle)

Question 18

Chlorophyll is found

Answer 18

In the thylakoids

Question 19

A stack or stacks of thylakoids is called

Answer 19

Grana (granum)

Question 20

Plants take in _____ and give off _____

Answer 20

Carbon Dioxide; Oxygen

Question 21

The overall equation for photosynthesis is

Answer 21

6CO₂ + 6H₂O + Light Energy –> C₆H₁₂O₆ + 6O₂

Question 22

C₆H₁₂O₆ is the chemical symbol for

Answer 22

Glucose

Question 23

What kind of biomolecule is glucose?

Answer 23

Carbohydrate (sugar)

Question 24

The light-collecting molecules found in plants are called

Answer 24

Pigments

Question 25

The pigment most commonly found in plants is

Answer 25

Chlorophyll

Question 26

Why do plants appear green?

Answer 26

They do **_not_** absorb green light They **_reflect_** green light

Question 27

The three things that affect the rate of photosynthesis are

Answer 27

1. temperature 2. light intensity 3. amount of water

Question 28

What are the overall purposes of photosynthesis and cellular respiration?

Answer 28

Photosynthesis - energy capture (makes chemical energy in the form of glucose) Cellular Respiration - energy release (breaks down the chemical energy stored in glucose and creates energy in the form of ATP which the cell can use)