Group 9: Photosynthesis: Light Reaction

Question 1

What are the two parts of photosynthesis?

Answer 1

Light-dependent and Light-Independent (Calvin Cycle)

Question 2

Where does the light-dependent reaction take place?

Answer 2

thylakoids

Question 3

Where does the light-independent reaction take place?

Answer 3

stroma

Question 4

Where does photosynthesis occur?

Answer 4

chloroplasts

Question 5

It is a type of plastid—a round, oval, or disk-shaped body that is
involved in the synthesis and storage of foodstuffs.

Answer 5

Chloroplasts

Question 6

What do Chloroplasts produce?

Answer 6

• NADPH
• Molecular Oxygen (O2)
• ATP

Question 7

is a pigment or a chemical compound that absorbs and reflects
specific wavelengths of light.

Answer 7

Chlorophyll

Question 8

(Parts of the Chloroplast)
is a semi-porous membrane that is permeable to small molecules
and ions, which diffuses easily.

Answer 8

Outer Membrane

Question 9

(Parts of the chloroplast)
it is present between the outer and the inner membrane of the
chloroplast.

Answer 9

Intermembrane Space

Question 10

(Parts of Chloroplast)
It regulates the passage of materials in and out of the chloroplast. Forms a border to the
stroma.

Answer 10

Inner Membrane

Question 11

(Parts of Chloroplast)
A system that is suspended in the stroma. Is a
collection of membranous sacs called thylakoids.

Answer 11

Thylakoid System

Question 12

How many thylakoids does each granum contain?

Answer 12

10-20 Thylakoids

Question 13

(Parts of Chloroplast)
Is a colorless, alkaline, aqueous, protein-rich fluid present within the inner
the membrane of the chloroplast surrounding the grana.

Answer 13

Stroma

Question 14

(Part of chloroplasts)
Is the collective term for the stack of thylakoids within the chloroplast of plant
cells. You can call if grana if it is plural.

Answer 14

Granum

Question 15

(Parts of Chloroplast)
Is a membrane-defined space that is found inside several organelles, cellular
components, or structures: thylakoid, endoplasmic reticulum, Golgi apparatus,
lysosome, mitochondrion, or microtubule.

Answer 15

Lumen

Question 16

(Parts of Chloroplast)
It connects thylakoids of two different grana; they are also known as
stroma thylakoids. Thus, they ensure that maximum energy from sunlight is captured in
photosynthesis.

Answer 16

Stroma Lamellae

Question 17

What are the two types of Photosystem?

Answer 17

Photosystem II ( water-plastoquinone oxidoreductase) and Photosystem I (plastocyanin- ferrodoxin oxidoreductase)

Question 18

What is the by-product in Photosystem II?

Answer 18

O2 or Oxygen

Question 19

What are the products of PSI and PSII?

Answer 19

ATP and NADPH

Question 20

This Photosystem is maximally excited

by light at longer wavelengths. (P700)

Answer 20

Photosystem I

Question 21

This Photosystem is maximally
excited by shorter wavelengths. (Less
the 680)

Answer 21

Photosystem II

Question 22

Where is Photosystem I located?

Answer 22

Outer surface of the thylakoid membrane

Question 23

Where is Photosystem II located?

Answer 23

On the inner surface of the thylakoid membrane

Question 24

In which system does photolysis occur?

Answer 24

Photosystem II

Question 25

What is the primary function of Photosystem I?

Answer 25

The primary function of the PS I is in NADPH synthesis, where it receives the electrons from PS II.

Question 26

What is the primary function of Photosystem II?

Answer 26

The primary function of the PS II is in the hydrolysis of water and ATP synthesis.

Question 27

What is the core composition of PS I?

Answer 27

The PSI is made up of two subunits which are psaA and psaB.

Question 28

What is the core composition of PS II?

Answer 28

The PS II is made up of two subunits made up of D1 and D2.

Question 29

What are the two ways to generate ATP?

Answer 29

1. ) Non cyclic photophosphorylation

2. ) Cyclic photophosphorylation

Question 30

What receives the electron during Photosystem II?

Answer 30

Electron Acceptor