Photosynthesis

Question 1

The light-dependent reaction associated with photosynthesis occurs in the…..?

Answer 1

chloroplasts

Question 2

The light reactions occur in

the_________,while the calvin cycle occurs in the_________.

Answer 2

Thylakiod membrane, stroma

Question 3

What are produced during the calvin cycle?

Answer 3

Co2, glucose

Question 4

What are the 2 photosystems called?

Answer 4

Photosystems 1 and 2

Question 5

Photolysis refers to the____________.?

Answer 5

Splitting of water

Question 6

What is ATP energy?

Answer 6

ATP(adenosine triphosphate) is a molecule that stores and transfers energy within the cell. also made of sugar. Consisting of (5 carbon ribose), niteogen base, (adenine) and 3 phosphate molecules.

Question 7

Where does fermentation occur?

Answer 7

cytoplasm of the cell

Question 8

The stacks of thylakoid disks inside a chloroplast are called___________?

Answer 8

grana

Question 9

Photosynthesis is most effective in which colors of visible light spectrum?

Answer 9

blue and red

Question 10

The light dependent reactions of photosynthesis occur without_________?

Answer 10

carbon dioxide

Question 11

Electrons are transferred from weak to stronger acceptors. An example of a strong electron acceptor?

Answer 11

Oxygen

Question 12

The liquid inside the thylakoid disk is the_________?

Answer 12

Lumen

Question 13

The process in which ADP becomes ATP is known as…………….?

Answer 13

phosphorylation

Question 14

The end products of photosynthesis is___________?

Answer 14

oxygen, water, and sugar

Question 15

The correct order of steps in cellular respiration is…

1. Hydrogen/electron Transport system
2. Kreb cycle
3. carbon fixation
4. Acetyl CoA formation
5. glycolysis

Answer 15

5412

Question 16

The correct order of the steps of photosynthesis is…

1) NADPH is formed 2) carbon is fixed 3) water is split 4) oxygen is released

Answer 16

3412

Question 17

Which two compounds produced during the Krebs cycle donate electrons to the electron transport chain?

Answer 17

NADH and FADH2

Question 18

Which of the following organelles is the site of cellular respiration?

Answer 18

The mitochondrion

Question 19

Pyruvate oxidation is a transition reaction that directly links which of the following two metabolic pathways?

Answer 19

Glycolysis and the Krebs cycle

Question 20

Which of the following steps occurs in both aerobic and anaerobic respiration?

Answer 20

Glycolysis

Question 21

Photosystems are located in which of the following cellular structures?

Answer 21

thylakoids

Question 22

Which colors of visible light does chlorophyll absorb the most?

Answer 22

blue and red

Question 23

Operation of the Calvin-Benson cycle requires a constant supply of………?

Answer 23

C, H, O, and energy

Question 24

Which of the following processes occurs during non-cyclic photophosphorylation and releases oxygen?

Answer 24

Photolysis

Question 25

What is outpart of the thylakiod membrane?

Answer 25

Outermembrane

Question 26

What are the role of the photosystems?

Answer 26

To produce evergy in the stroma which will be later used to manufacture surgers.

Question 27

Light independent reactions are also referred to as_________________ ?

Answer 27

Dark reactions or the calvin cycle

Question 28

What does the Calvin cycle convert ?

Answer 28

Csrbon dioxide into a 3-carbon suger molecule that is used to make glucose for plants.

Question 29

The__________and______________required in the calvin cycle are provided by light reactions of photosynthesis.

Answer 29

ATP and NADPH

Question 30

Explain the steps of the Calvin cycle....

Answer 30

The initial step is to attach CO2 to a sugar called ribulose bisphosphate (RuBP), which is done by an enzyme called RuBisCO. This results in two molecules of 3-phosphoglycerate (3PGA), which receive a phosphate from ATP and electrons from NADPH (provided by the light reactions) to form glyceraldehyde-3-phosphate (G3P or PGAL). Some G3P is then used to produce carbohydrates such as glucose, which are important for plant growth. The rest of the G3P is converted back to RuBP by ATP so it can accept more carbon dioxide.

Question 31

Cyclic photophosphorylation also occurs during__________?

Answer 31

light reactions, and produces ATP (through the action of chemiosmosis), but not NADPH.

Question 32

In photosynthesis, energy from the sun is required to form....

Answer 32

ATP and split water.

Question 33

The light-independent reactions of photosynthesis require the presence of...

Answer 33

carbon dioxide and NADPH

Question 34

The energy that is contained in a grapefruit originates from...

Answer 34

ATP

Question 35

The molecule that is recycled in the light-independent reactions is...

Answer 35

ribulose bisphosphate

Question 36

Which of the following pigments is most important in the process of Photosynthesis?

Answer 36

Chlorophyll a

Question 37

In which part of the plant does Photosynthesis mostly occur?

Answer 37

leaves

Question 38

Light trapping units composed of pigments within the thylakoid membranes

Answer 38

Photosystems

Question 39

The least and most soluble pigments are....

Answer 39

chlorophyll B

Question 40

The conversion of CO2 and H2O into organic compounds using energy from light is called?

Answer 40

Photosynthesis

Question 41

During which of the following phases of cellular respiration does substrate-level phosphorylation take place?

Answer 41

glycolysis

Question 42

The end products of glycolysis should include.....

Answer 42

acetyl CoA

Question 43

When an organism such as a yeast lives by fermentation, it converts the pyruvate from glycolysis into a different compound, such as alcohol. Why doesn't it secrete the pyruvate directly?

Answer 43

The conversion is needed to regenerate the molecules needed for glycolysis.

Question 44

The oxygen released into the air as a product of photosynthesis comes from...

Answer 44

water