Photosynthesis

Question 1

Photosynthesis

Answer 1

Plants use the sun’s energy to convert water and carbon dioxide into sugars and oxygen.

Question 2

Autotrophs

Answer 2

Organisms that make their own food

Question 3

Heterotrophs

Answer 3

Organisms that can’t make their own food, eat other organisms

Question 4

Light reaction

Answer 4

First part of photosynthesis that involves light. ATP and NADPH are produced. Takes place on the thylakoid membrane.

Question 5

Calvin cycle

Answer 5

Second part of photosynthesis in which energy from ATP and NADPH is used to build sugars. Takes place in the stroma. (Dark reactions)

Question 6

Chloroplast

Answer 6

An organelle found in plant and algae cells where photosynthesis occurs.

Question 7

Thylakoid

Answer 7

A flattened membrane sac inside the chloroplast, used to convert light energy to chemical energy.

Question 8

Granum

Answer 8

A stack of thylakoids in a chloroplast.

Question 9

Stroma

Answer 9

Fluid inside the chloroplasts, where energy is used to build sugars.

Question 10

Pigments

Answer 10

Light absorbing molecules

Question 11

Chlorophyll

Answer 11

Green pigment in plants that absorbs light energy used to carry out photosynthesis.

Question 12

Carotenoids

Answer 12

Accessory pigments that broaden the spectrum of colors that can drive photosynthesis, makes leaves yellow/orange/red in the fall.

Question 13

Photosystem

Answer 13

Cluster of chlorophyll and proteins found in thylakoids, take light energy and use it to excite electrons.

Question 14

Carbon fixation

Answer 14

The incorporation of carbon from carbon dioxide into sugar during photosynthesis.

Question 15

Water

Answer 15

Used by plants to provide protons and electrons, also creates oxygen which is released; used during the light reaction.

Question 16

Oxygen

Answer 16

Created when water breaks down during the light reaction.

Question 17

Carbon Dioxide

Answer 17

Used during the Calvin cycle to create glucose.

Question 18

Glucose

Answer 18

Sugar formed during the Calvin cycle of photosynthesis, stores energy for cells to use later.

Question 19

Light

Answer 19

Source of energy for plants and algae during photosynthesis, used during the light reaction.

Question 20

ATP

Answer 20

Main energy source that cells use for most of their work, like a charged cell battery.

Question 21

ADP

Answer 21

The compound that remains when energy is removed from ATP, like an uncharged cell battery.

Question 22

NADP+

Answer 22

An energy carrier molecule produced during the Calvin cycle and charged during the light reactions, like an uncharged cell battery.

Question 23

NADPH

Answer 23

An energy carrier molecule produced in the light reactions of photosynthesis; used to build sugar in the Calvin cycle, like a charged cell battery.

Question 24

Photosynthesis Equation

Answer 24

6CO2 + 6H2O –light energy–> C6H12O6 + 6O2

Question 25

What is the purpose of chlorophyll?

Answer 25

To absorb light energy and convert it to chemical energy

Question 26

What type of energy is ATP?

Answer 26

Chemical

Question 27

What does the Calvin Cycle do?

Answer 27

It turns chemical energy into glucose compounds

Question 28

What organisms do lactic acid fermentation?

Answer 28

Eukaryotes and some bacteria

Question 29

What organisms do alcohol fermentation?

Answer 29

Yeast and some bacteria

Question 30

When is energy released from ATP?

Answer 30

When the phosphate bond is broken