Photosynthesis

Question 1

Living things get their energy from

Answer 1

Food

Question 2

Some organisms make food by converting___into___

Answer 2

-energy from the sun
-glucose

Question 3

The process of converting energy from the sun into glucose

Answer 3

Photosynthesis

Question 4

Who produces their own food

Answer 4

Autotrophs

Question 5

Also called producers

Answer 5

Autotrophs

Question 6

Must consume food

Answer 6

Heterotrophs

Question 7

Also called consumers

Answer 7

Heterotrophs

Question 8

Chloroplasts are found in what cells?

Answer 8

Plant cells and some unicellular organisms

Question 9

Where does photosynthesis take place?

Answer 9

Chloroplasts

Question 10

Where are chloroplast most concentrated in the leaf?

Answer 10

Mesophyll layer

Question 11

What are the 3 inputs for photosynthesis?

Answer 11

solar energy, carbon dioxide, and water

Question 12

What are the openings or pores on the underside of the leaf?

Answer 12

Stomata

Question 13

Where in the leaf does carbon dioxide enter and oxygen leave?

Answer 13

The stomata

Question 14

What is the food that is produced by photosynthesis?

Answer 14

glucose

Question 15

What is a 6 carbon sugar that cells use for energy?

Answer 15

Glucose

Question 16

What do plants use some of the glucose for?

Answer 16

Cellular Respiration

Question 17

Where is excess glucose stored in or what is glucose converted into?

Answer 17

Organic Compounds

Question 18

Where does the plant store excess glucose in?

Answer 18

Leaves, roots, stems, or fruit

Question 19

Where does most photosynthesis occur?

Answer 19

In leaves

Question 20

What does the veins do?

Answer 20

They carry water and sugars to various parts of the plant.

Question 21

What is the chemical equation for photosynthesis?

Answer 21

6CO2 + 6H2O → C6H12O6 + 6O2

Question 22

What is the word equation for photosynthesis?

Answer 22

6 carbon dioxide + 6 water → glucose + 6 oxygen

Question 23

What is the original energy source for photosynthesis?

Answer 23

Light

Question 24

What is the small part of the electromagnetic spectrum that is visible to the human eye?

Answer 24

Visible LIght

Question 25

In photosynthesis light energy is absorbed by what?

Answer 25

Chlorophyll molecules

Question 26

In photosynthesis light energy is converted into what?

Answer 26

chemical energy

Question 27

What is the green pigment in plants?

Answer 27

Chlorophyll

Question 28

Why do plants look green?

Answer 28

Because chlorophyll reflects green light

Question 29

What happens in the light reactions?

Answer 29

Light energy is converted into ATP and NADPH

Question 30

What happens in the Calvin Cycle?

Answer 30

ATP and NADPH is used to make glucose

Question 31

What does an ATP molecule store?

Answer 31

potential energy

Question 32

How is energy released from an ATP molecule?

Answer 32

when a phosphate group is pulled away during a chemical reaction

Question 33

What is NADPH?

Answer 33

A high energy electron carrier molecule

Question 34

How is NADPH formed?

Answer 34

When a NADP+ is reduced by the addition of 2 high energy electrons

Question 35

What are the two stages of photosynthesis?

Answer 35

The Light Reactions and The Calvin Cycle

Question 36

The light reactions use ___ and release ___

Answer 36

water oxygen

Question 37

The light reactions occur in what?

Answer 37

the thylakoid membrane

Question 38

what are chlorophyll and other molecules arranged in?

Answer 38

clusters called photosystems

Question 39

PS11 and PS1 is built into what?

Answer 39

the thylakoid membrane

Question 40

How does the light reaction start?

Answer 40

A pigment molecule in PS11 absorbs a photon of light, which excites one of the pigments electrons

Question 41

A light-excited electron jumps from one chlorophyll molecule to the next until it reaches the

Answer 41

reaction center

Question 42

What do excited electrons do when they fall back down to their original position?

Answer 42

release energy

Question 43

what does a reaction center contain?

Answer 43

chlorophyll a molecules and a primary electron acceptor(PEA)

Question 44

what is the function of a PEA?

Answer 44

to capture a light-excited electron from chlorophyll a and pass it to an electron transport chain

Question 45

What does an ETC do?

Answer 45

Helps excited electrons fall from PSII to PSI

Question 46

As electrons move along the electron transport chain what is released?

Answer 46

Energy

Question 47

What is the energy from the electron transport chain used for?`

Answer 47

to pump H+ ions across the membrane and establish a concentration gradient

Question 48

What is the diffusion of ions through a semi-permeable membrane?

Answer 48

Chemiosmosis

Question 49

What is the molecule built into the membrane that produces ATP from ADP as H+ ions pass through?

Answer 49

ATP Synthase

Question 50

In PSl, what happens when the primary electron acceptor captures the excited e-?

Answer 50

It passes it to a short ETC which generates NADPH

Question 51

In PSl what accepts electrons at the end of the ETC to form NADPH?

Answer 51

NADP+

Question 52

What are the products of the light reactions?

Answer 52

ATP, NADPH, and Oxygen

Question 53

What are the inputs of the Calvin Cycle?

Answer 53

ATP, NADPH, and Carbon Dioxide

Question 54

What is the output of the Calvin Cycle?

Answer 54

G3P

Question 55

What is G3P?

Answer 55

3 carbon sugar that is used to make glucose

Question 56

Where does the calvin cycle take place?

Answer 56

the stroma

Question 57

Why is the Calvin Cycle called a cycle?

Answer 57

Because the starting molecule RuBP is regenerated

Question 58

How many steps are in the Calvin Cycle?

Answer 58

4

Question 59

What happens in step 1 of the Calvin Cycle?

Answer 59

Carbon Fixation

Question 60

What is the equation for Carbon Fixation?

Answer 60

3CO2+3RuBP→2(3-PGA)

Question 61

What is step 2 of the calvin cycle?

Answer 61

The reduction to 6 ATP + 6 NADPH to make 6 molecules of G3P

Question 62

What is step 3 of the calvin cycle?

Answer 62

The release of 1 molecule of the sugar G3P

Question 63

What is step 4 of the Calvin Cycle?

Answer 63

Using 3 ATP to make RuBP from the 5 remaining G3P molecules

Question 64

How many G3P are needed to make glucose?

Answer 64

2