Photosynthesis

Question 1

What gas is needed for photosynthesis?

Answer 1

Carbon Dioxide

Question 2

What inorganic substance or liquid is needed for photosynthesis?

Answer 2

Water

Question 3

What gas is a by-product of photosynthesis?

Answer 3

Oxygen

Question 4

What is the main product of Photosynthesis?

Answer 4

Glucose or Sugar/Carbohydrates

Question 5

What is the Chemical formula for Photosynthesis?

Answer 5

6CO2 + 6H20 ►C6H12O6 + 6O2

Question 6

What Organelle is involved in this process?

Answer 6

Chloroplast

Question 7

a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism’s activities

Answer 7

Photosynthesis

Question 8

Examples of why Photosynthesis is important?

Answer 8

1. Production of building blocks for complex compounds in plants
2. Generation of ATP
3. Production of food
4. Reduction of excess carbon dioxide and increase oxygen concentrations.

Question 9

This phase of Photosynthesis use light energy to make two molecules needed for the next stage of photosynthesis: the energy storage molecule ATP and the reduced electron carrier NADPH.

Answer 9

Light Reaction

Question 10

In most higher plants, the thylakoids are arranged in tight stacks called this.

Answer 10

Grana

Question 11

Where does the light-dependent phase of Photosynthesis?

Answer 11

Grana/Thylakoid

Question 12

This phase of photosynthesis can carry on even without sunlight.

Answer 12

Calvin Cycle

Question 13

This phase of Photosynthesis involves the utilization of energy from ATP and NADPH in the synthesis of food (glucose), the final product in the process

Answer 13

Dark Reaction

Question 14

Where does the Dark Reaction occur in the Chloroplast?

Answer 14

Stroma

Question 15

The set of wavelengths that a pigment doesn’t absorb are

Answer 15

Reflected

Question 16

Thylakoids are surrounded by a fluid-filled space called this

Answer 16

Stroma

Question 17

In most photosynthetic organism, thylakoids contain pairs of photosystem called this.

Answer 17

1. Photosystem I
2. Photosystem II

Question 18

This molecule absorbs the photon of light

Answer 18

Chlorophyll

Question 19

The energized electrons are passed from the reaction center of Photosystem II to an electron transport chain. The electrons lost by Photosystem II are replaced by a process called ______, which involves the oxidation of a water molecule, producing free electrons and oxygen gas.

Answer 19

Hydrolysis

Question 20

As electrons pass through the electron transport chain, the energy from the electron is used to pump hydrogen ions from the stroma to the thylakoid, creating a _______ gradient. This gradient powers a protein called ATP synthase, which phosphorylates ADP to ATP.

Answer 20

Concentration

Question 21

The low-energy electrons leaving Photosystem II are shuttled to ______

Answer 21

Photosystem I

Question 22

Within Photosystem I, low-energy electrons are reenergized and are passed through an electron transport chain where they are used to reduce the electron center NADP+ to ____

Answer 22

NADPH

Question 23

This phase of Photosynthesis involves the absorption of light energy, photoactivation of Chlorophyll, ATP synthesis, production of NADPH, and production of Oxygen

Answer 23

Light Dependent Reaction

Question 24

is an enzyme found in the thylakoid membrane in chloroplasts of plants, cyanobacteria, and green algae, that catalyzes the transfer of electrons from plastoquinol to plastocyanin.

Answer 24

b6f complex

Question 25

The function of ________ is to synthesize ATP from ADP and inorganic phosphate

Answer 25

ATP synthase

Question 26

The absorption of chlorophyll a is highest in _____ and chlorophyll b is highest in ______.

Answer 26

blue, red

Question 27

Absorption of light energy and photoactivation of chlorophyll

1.________ absorbs light energy and releases electrons.
2. The photosystem pulls __________ from water molecules, which then break apart into oxygen atoms and hydrogen ions. The oxygen atoms leave the cell as O2 gas.
3. The electrons enter an ________ in the thylakoid membrane.
4. The energy lost by the electrons as they move through the chain is used to actively transport hydrogen ions from the _____ into the ______ compartment. A hydrogen ion gradient forms across the thylakoid membrane.
5. Another chlorophyll complex, _________, absorbs light energy and releases electrons. Replacement electrons come from the first electron transfer chain.

Answer 27

1. Photosystem II
2. replacement electrons
3. electron transfer chain
4. stroma, thylakoid
5. photosystem I

Question 28

1st part of the absorption of light energy and photoactivation of chlorophyll

Answer 28

Photosystem II absorbs light energy and releases electrons.

Question 29

2nd part of the absorption of light energy and photoactivation of chlorophyll

Answer 29

The photosystem pulls replacement electrons from water molecules, which then break apart into oxygen atoms and hydrogen ions. The oxygen atoms leave the cell as O2 gas.

Question 30

3rd part of the absorption of light energy and photoactivation of chlorophyll

Answer 30

The electrons enter an electron transfer chain in the thylakoid membrane.

Question 31

4th part of the absorption of light energy and photoactivation of chlorophyll

Answer 31

4. The energy lost by the electrons as they move through the chain is used to actively transport hydrogen ions from the stroma into the thylakoid compartment. A hydrogen ion gradient forms across the thylakoid membrane.