Photosynthesis

Question 1

Plants are….

Answer 1

Autotrophs (or producers)

Question 2

Plants produce…

Answer 2

Chemical energy from solar energy

Question 3

The process of producing chemical energy from solar energy is called…

Answer 3

Photosynthesis

Question 4

Photosynthesis occurs in … Different reactions

Answer 4

3

Question 5

What is the first reaction of photosynthesis?

Answer 5

Light absorption by chlorophyll

Question 6

What is the second reaction of photosynthesis?

Answer 6

Light dependent reactions (Electron Transport Chain & Chemiosmosis)

Question 7

What is the third reaction of photosynthesis?

Answer 7

Light Independent reaction (Calvin Cycle)

Question 8

Where does light absorption by chlorophyll occur?

Answer 8

Thylakoids

Question 9

Where does light dependent reactions occur?

Answer 9

Thylakoid membrane

Question 10

Where does light independent reactions occur?

Answer 10

Stroma

Question 11

Any green part of a plant contains the pigment…

Answer 11

Chlorophyll

Question 12

Chlorophyll reflects … Light

Answer 12

Green

Question 13

Chlorophyll absorbs … Light

Answer 13

Red and blue

Question 14

Chlorophyll absorbs the … Energy needed to begin photosynthesis

Answer 14

Light

Question 15

Chloroplast are concentrated in the cells of the …

Answer 15

Mesophyll

Question 16

Mesophyll is…

Answer 16

Green tissue on the exterior of the leaf

Question 17

Every mesophyll contains numerous …

Answer 17

Chloroplasts

Question 18

Stomata (stoma) are pores on the leaf where….

Answer 18

CO² enters and O² exits

Question 19

Stroma is the …

Answer 19

Fluid compartment enclosed by the inner membrane

Question 20

Stroma is the site of…

Answer 20

Sugar Synthesis from CO²

Question 21

Grana are …

Answer 21

Stacks of membranous sacs of thylakoids

Question 22

Thylakoids are…

Answer 22

Individual sacs that contain the Chlorophyll within the thylakoid membrane

Question 23

Thylakoids are the site of..

Answer 23

Light absorption

Question 24

Overall equation of photosynthesis…

Answer 24

6CO² + 6H²O + light energy → C⁶H¹²O⁶ + 6O²

Question 25

Plants produce O² gas by

Answer 25

Splitting water molecules

Question 26

Photosynthesis is a ... Reaction

Answer 26

Redox

Question 27

When light is absorbed by the chlorophyll, it converts solar energy to...

Answer 27

Electrical energy (the flow of electrons)

Question 28

A discreet package of light energy is called a ...

Answer 28

Photon

Question 29

When a pigment absorbs a photon, one of the electrons gain energy, raising it from...

Answer 29

Ground state to an excited state

Question 30

The ... State of an electron is very ...

Answer 30

Excited ; unstable

Question 31

As soon as a photon of light is absorbed the ... Begins

Answer 31

Transport of electrons

Question 32

The ETC takes place in a ...

Answer 32

Photosystem

Question 33

A photosystem is a ...

Answer 33

Unit of several hundred chlorophyll molecules and carrier molecules

Question 34

Most plants have ... Types of photosystems

Answer 34

2

Question 35

PSI contains mostly Chlorophyll w optimum absorption of ... Light at ... nm

Answer 35

Red ; 700

Question 36

PSII has best absorption at ... nm, and is a ... Colour

Answer 36

680 ; orange red

Question 37

... Can function on its own and carry out the first stage of photosynthesis alone

Answer 37

PSI

Question 38

The ETC begins in ...

Answer 38

PSII

Question 39

[4th step of ETC] NADP+ is reduced to ...

Answer 39

NADPH

Question 40

Chemiosmosis is ...

Answer 40

Diffusion of chemicals through a membrane that results in ATP formation

Question 41

When NADP+ is reduced to NADPH, it breaks a ... Molecule into ... And ...

Answer 41

Water ; H+ ; O²

Question 42

The ETC within the thylakoids trigger ...

Answer 42

Chemiosmosis

Question 43

The concentration of H+ is ... Inside the thylakoid space than in the ...

Answer 43

Higher ; stroma

Question 44

The ... And .... Formed in the light.... Reactions are used as the energy to drive the light... Reaction

Answer 44

NADPH ; ATP ; dependent ; independent

Question 45

Light independent reaction is also known as

Answer 45

Calvin Cycle / Carbon Fixation

Question 46

The ... Cycle has ... Major steps that is ... By a specific enzyme

Answer 46

Calvin ; 4 ; catalyzed

Question 47

The Calvin Cycle is also referred to as the ... Pathway because of it's 3C intermediate PGA

Answer 47

C³

Question 48

What are the four major steps of the Calvin Cycle?

Answer 48

1) CO² diffuses into the stroma; rubisco binds to a CO² molecule to a 5-C RuBP to form a 6-C molecule 2) 2 molecules of 2-PGA is formed 3) 3PGA is changed to G3P (ATP and NADPH are used) 4) Most of the G3P regenerates more RuBP

Question 49

Why is Calvin Cycle a cycle?

Answer 49

Because most of G3P regenerates more RuBP

Question 50

Photosynthetic autotrophs use intermediate compounds such as ... To form a variety of organic compounds such as...

Answer 50

G3P ; amino acids, lipids, and carbohydrates

Question 51

What are other Carbon-Fixing pathways?

Answer 51

C⁴ and CAM

Question 52

C⁴ and CAM plants open their ... At night

Answer 52

Stomata

Question 53

Examples of C⁴ plants?

Answer 53

Corn, sugarcane, crabgrass

Question 54

What are examples of CAM plants?

Answer 54

Cactus and pineapples

Question 55

NADP+ is

Answer 55

Nicotinamide adenine dinucleotide phosphate

Question 56

NAD+ is

Answer 56

Nicotinamide adenine dinucleotide

Question 57

FAD+

Answer 57

Flavin adenine dinucleotide

Question 58

ADP is

Answer 58

Adenosine diphosphate

Question 59

ATP is

Answer 59

Adenosine triphosphate

Question 60

3PGA is

Answer 60

3 phosphoglyceric acid

Question 61

RuBP is

Answer 61

Ribulose biphosphate

Question 62

CAM is

Answer 62

Crassulacean Acid Metabolism