Quiz about Ibhl Biology Light Dependent Reaction

Question 1

Which of the following is NOT a product of the light reactions?

Accepted Answer

Glucose (Sugar)

Answer

Oxygen

Answer

NADPH

Answer

ATP

Question 2

What are the two products of the light reactions that are needed for the calvin cycle?

Accepted Answer

NADPH and ATP

Answer

NAD and NADPH

Answer

NADP + and Glucose

Answer

Oxygen and NADPH

Question 3

Thylakoids are arranged in stacks called ____.

Accepted Answer

Granum

Answer

Lamellae

Answer

Stroma

Answer

Lumen

Question 4

The gel-like material that surrounds the grana is called ____

Accepted Answer

stroma

Answer

lamellae

Answer

granum

Answer

thylakoid

Question 5

ATP gets formed in the light dependent reaction by which process?

Accepted Answer

Chemiosmosis

Answer

Photosmosis

Answer

Diffusion

Answer

Active Transport

Question 6

What supplies the electrons that are lost in photosystem I (PSI)?

Accepted Answer

the electrons from PS II

Answer

water

Answer

glucose

Answer

electrons from photolysis

Answer

Hydrogen

Question 7

Chlorophyll absorbs _____ and _______ light from the light.

Accepted Answer

red and blue

Answer

purple and green

Answer

black and orange

Answer

yellow and green

Question 8

What is the function of NADP+?

Accepted Answer

It is an electron carrier

Answer

It absorbs light

Answer

It is a light-reflecting pigment

Answer

It acts as long-term energy storage

Question 9

What is the purpose of splitting water in PS2 of the light dependent reaction?

Accepted Answer

Provides e- for PS2 and H+ for the thylakoid space

Answer

To produce Oxygen for animals

Answer

There is no purpose in the LDR

Answer

It is used in the LIR

Question 10

What drives the formation of ATP by ATP synthase?

Accepted Answer

buildup of H+ ions

Answer

reaction centre

Answer

light absorption

Answer

splitting carbon dioxide

Answer

photolysis

Question 11

After light excites the electron and they leave Photosystem II to travel down the first electron transport chain, how are these electrons replaced to Photosystem II?

Accepted Answer

Water is split, and the electrons are given to the chlorophyll molecules of photosystem II.

Answer

Oxygen is reduced and the electrons are given to the chlorophyll molecules of photosystem II.

Answer

Carbon dioxide is split, and the electrons are given to the chlorophyll molecules of photosystem II.

Answer

Hydrogen undergoes fusion, and the electrons are given to the chlorophyll molecules of photosystem II.

Question 12

The splitting of water at photosystem II is known as ____ and results in the production of _____.

Accepted Answer

photolysis: oxygen, hydrogen ions (protons), and electrons that are given to photosystem II.

Answer

Chemiolysis: carbon dioxide, G3P, and electrons that are given to photosystem II.

Answer

the Calvin cycle: carbon dioxide, G3P, and electrons that are given to photosystem II

Answer

chemiosmosis: oxygen, hydrogen ions (protons), glucose and electrons that are given to photosystem II.

Question 13

Why do hydrogen ions flow from the thylakoid space to the stroma through ATP synthase?

Accepted Answer

They flow passively from the high to low concentration via facilitated diffusion. As they flow through ATP synthase, the enzyme spins and produces ATP.

Answer

They are pumped actively through the ATP synthase. This uses ATP energy and causes the production of ADP and phosphate.

Answer

They flow through the Calvin cycle and produce light.

Answer

Hydrogen ions do not actually flow from the thylakoid space to the stroma. They flow the opposite way.

Question 14

The membranes connecting the stacks of disks in the chloroplast are called:

Accepted Answer

Lamellae

Answer

Grana

Answer

Stroma

Answer

Thylakoids

Question 15

The two people with hammers in the Z-Scheme analogy refer to

Accepted Answer

Photosystems

Answer

ETC

Answer

Thylakoids

Answer

Xylem & Phloem

Question 16

In Cyclic Electron flow, electrons are returned to:

Accepted Answer

Photosystem I

Answer

Photosystem II

Answer

H2O

Answer

NADPH

Question 17

Which molecule is ONLY produced in Cyclic electron flow:

Accepted Answer

ATP

Answer

O2

Answer

H2O

Answer

NADPH

Question 18

Where are photosystems located?

Accepted Answer

thylakoid membrane

Answer

thylakoid space

Answer

central vacuole

Answer

stroma

Answer

Chloroplast phospholipid bilayer (membrane)

Question 19

The reaction- center chlorophyll of photosystem is known as P700 because

Accepted Answer

the pigment best at absorbing light with a wavelength of 700 nm

Answer

there are 700 chlorophyll molecules in the center

Answer

there are 700 photosystem I components to each chloroplast

Answer

it absorbs 700 photons per microsecond

Question 20

What is one function of having other pigments besides chlorophyll in the chloroplast?

Accepted Answer

to absorb different wavelengths than the chlorophyll

Answer

to block damaging wavelengths of light

Answer

to provide different colors to the leaves

Answer

to transfer energy to a separate photosystem beside the one using chlorophyll a and b.

Question 21

Where/when is glucose synthesized?

Accepted Answer

Calvin Cycle

Answer

Photosystem II

Answer

Photosystem I

Answer

Glycolysis

Question 22

Plants are classified as

Accepted Answer

photoautotrophs

Answer

autotrophs

Answer

heterotrophs

Answer

chemoautotrophs

Question 23

Non-cyclic photophosphorylation involves

Accepted Answer

all options

Answer

both photosystem 1 & 2

Answer

z-scheme

Answer

ATP synthesis

Question 24

The enzyme for photolysis of water is located in

Accepted Answer

photosystem 2

Answer

photosystem 1

Answer

calvin cycle

Answer

all options

Question 25

Which is a graph of the rate of photosynthesis?

Accepted Answer

action spectrum

Answer

absorption spectrum

Answer

electromagnetic spectrum

Answer

none of the options

Question 26

calvin cycle occurs in the

Accepted Answer

stroma

Answer

thylakoid

Answer

cytoplasm

Answer

matrix

Question 27

The table below contains statements that refer to the light-dependent stage of photosynthesis.

Complete the table, indicating with the letters C, N or B, whether each statement applies to: Cyclic photo phosphorylation, Non cyclic or Both

Which is the correct order of B, C, N in the following table?

Accepted Answer

BBNNC

Answer

CBNBC

Answer

BBNCB

Answer

NCBBC

Answer

NBNNC

Question 28

Name the pigment at the reaction centre of photosystems I and II

Accepted Answer

chlorophyll a

Answer

carotene

Answer

xanthophyll

Answer

reaction centre

Question 29

Name an accessory pigment.

Accepted Answer

carotene

Answer

Chlorophyll a

Answer

melanin

Answer

melanone

Question 30

Phospholipid bilayers play crucial roles within plant cells. Which of the following statements linked to the importance of membranes in plant cells is / are true?

Statement 1: ATP synthase embedded in thylakoid membranes maintains chemiosmotic gradients.

Statement 2: Phospholipid bilayers within the chloroplast are impermeable to protons.

Statement 3: Thylakoid membranes contain electron transport chain proteins

Accepted Answer

only 2 and 3

Answer

1,2 and 3

Answer

only 1 and 2

Answer

only 1

Question 31

Which of the following statements explains why this pigment is orange-red to the human eye?

1 The pigment absorbs green and blue light.

2 The pigment has an absorption peak at 500 nm.

3 The pigment passes photons to the primary pigment reaction centre.

Accepted Answer

only 1

Answer

1,2 and 3

Answer

1 and 2

Answer

2 and 3

Question 32

Which of the images, A to D, correctly summarises photosynthesis?

Accepted Answer

C

Answer

A

Answer

B

Answer

D

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