Photosynthesis

Question 1

Almost all plants are…

Answer 1

photosynthetic autotrophs

Question 2

They generate their own organic matter through photosynthesis.

Answer 2

autotrophs

Question 3

An energy that is transformed to energy stored in a form of chemical bond.

Answer 3

Sunlight Energy

Question 4

An energy that is harvested by plants and and other photosynthetic autotrophs.

Answer 4

Light Energy

Question 5

It is impregnated with photosynthetic pigments.

Answer 5

thylakoid membrane

Question 6

2 Examples of Photosynthetic Pigments

Answer 6

1. carotenoids
2. chlorophylls

Question 7

It absorb light energy and convert it to chemical energy.

Answer 7

Chloroplasts

Question 8

It is the process of by which autotrophic organism use light energy to make sugar and oxygen gas from CO2 and H20

Answer 8

Photosynthesis

Question 9

The energy conversion of light reaction.

Answer 9

Solar Energy to Chemical Energy

Question 10

What does the light reaction produced?

Answer 10

ATP and NADPH

Question 11

What does the Calvin Cycle make out of carbon dioxide?

Answer 11

sugar

Question 12

It provides energy for sugar synthesis.

Answer 12

ATP

Question 13

It provides electrons for the reduction of CO2 to glucose

Answer 13

NADPH

Question 14

The site of photosynthesis.

Answer 14

Chloroplasts

Question 15

A fluid in chloroplasts.

Answer 15

stroma

Question 16

Stacks of Thylakoid in Chloroplasts.

Answer 16

grana

Question 17

Several pigments of chloroplasts.

Answer 17

1. chlorophyll a
2. chlorophyll b
3. carotenoids

Question 18

It has a methyl group.

Answer 18

Chlorophyll a

Question 19

It has a carbonyl group.

Answer 19

Chlorophyll b

Question 20

A process for ATP generation associated with some photosynthetic bacteria.

Answer 20

Cyclic Photophosphorylation

Question 21

Photosystem II regains electrons by splitting water, leaving O2 gas as a by product.

Answer 21

Noncyclic photophosphorylation

Question 22

What powers the ATP synthesis in light reactions?

Answer 22

Chemiosmosis

Question 23

Equation for Photosynthesis

Answer 23

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

Question 24

These reaction occurs in thylakoid membrane of chloroplasts.

Answer 24

Light-Dependent Reaction

Question 25

In this reaction, Light energy is absorbed by chlorophyll, leading to the creation of high-energy molecules (ATP and NADPH).

Answer 25

Light Dependent Reaction

Question 26

In what phase does the water molecules are split?

Answer 26

photolysis

Question 27

This reaction takes place in the stroma of the chloroplasts.

Answer 27

Calvin Cycle or Light - Independent Reaction

Question 28

This reaction utilizes ATP and NADPH from the light-dependent reactions to convert carbon dioxide into glucose.

Answer 28

Light-Independent Reaction

Question 29

The cycle that involves a series of enzyme-controlled reactions, ultimately regenerating the starting molecule to continue the process.

Answer 29

Calvin Cycle

Question 30

What is the first stage of the light - dependent reaction?

Answer 30

Photosystem Absorption

Question 31

What are the 2 Photosystems?

Answer 31

1. Photosystem I 2. Photosystem II

Question 32

What is the 2nd stage of the light-dependent reaction?

Answer 32

Electron Transport Chain

Question 33

What energy does the 2 photosystems aborb that is embedded in the thylakoid membrane?

Answer 33

Light Energy

Question 34

High-energy electrons from PSII are passed through an electron transport chain, generating ATP through chemiosmosis.

Answer 34

Light - Dependent Reaction

Question 35

PSII also splits water molecules in a process called photolysis, releasing electrons, protons, and oxygen.

Answer 35

Light - Dependent Reaction

Question 36

Absorbs light, boosting electrons to a higher energy state.

Answer 36

Photosystem I

Question 37

These energized electrons are used to reduce NADP⁺ to NADPH.

Answer 37

Photosystem I

Question 38

Protons generated during the ETC create a proton gradient across the thylakoid membrane.

Answer 38

ATP Synthesis

Question 39

ATP synthase enzyme uses this gradient to convert ADP and inorganic phosphate into ATP.

Answer 39

ATP Synthesis

Question 40

Carbon dioxide from the atmosphere combines with a 5-carbon sugar (RuBP) with the help of the enzyme Rubisco.

Answer 40

Carbon Fixation

Question 41

This results in the formation of two 3-carbon molecules (3-PGA).

Answer 41

Carbon Fixation

Question 42

ATP and NADPH generated in the light-dependent reactions are utilized.

Answer 42

Reduction Phase

Question 43

3-PGA is phosphorylated by ATP and then reduced by NADPH, resulting in the formation of G3P (glyceraldehyde-3-phosphate).

Answer 43

Reduction Phase

Question 44

Some G3P molecules are used to regenerate RuBP to continue the cycle.

Answer 44

Regeneration of RuBP

Question 45

This requires additional ATP.

Answer 45

Regeneration of RuBP