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Flashcards in Photosynthesis Test Deck (29):
1

Adenosine Triphosphate (ATP)

a chemical compound cells use to store and release energy.

2

What three things does ATP consist of?

Adenine, the sugar ribose, and three phosphate groups.

3

How do cells store energy?

By adding a phosphate group to adenosine diphosphate. (ADP)

4

How to cells release energy?

By subtracting phosphate group from ATP.

5

_______ is the ability to do work.

Energy

6

_________ is a 5-carbon sugar molecule that is part of an ATP molecule.

Ribose

7

T/F: Cells store a lot of ATP energy at any given time.

False; they store only a little and make more as they need it.

8

What are two ways the ATP energy is used in the cells?

Active transport, cell movement

9

What of light determines its color?

Its wavelength.

10

Chemicals that absorb lights are called __________,

Pigments

11

Chloroplasts contain an abundance of saclike photosynthetic membranes called ________.

Thylakoids

12

What is the principal pigment photosynthetic organisms?

Chlorophyll

13

Stroma

the fluid portion outside of the thylakoids

14

_________ is a compound that can accept and hold 2 high-energy electrons and 1 hydrogen
ion.

NADP+

15

This process converts NADP+ into _________.

NADPH.

16

What does the light-dependent reaction need and what does it form?

e light, light-absorbing pigments, and water to
form NADPH, ATP, and oxygen.

17

What does the light-independent reaction need and what does it form?

They use carbon dioxide from
the atmosphere, NADPH, and ATP to make energy-rich carbon compounds.

18

What are the reactants of the photosynthesis reaction?

carbon dioxide and water

19

Where do the light-independent reactions occur?

Stroma

20

____________ are clusters of proteins and chlorophyll in thylakoid membranes.

Photosystems

21

High-energy electrons form when _______ in photosystem II absorb light.

Pigments

22

The electrons pass through ______ ________ _________, a series of electron carrier proteins.

Electron transport chains

23

_________ ________ is a membrane protein through which excess hydrogen ions escape a thylakoid in a process that makes ATP.

ATP synthase

24

{CALVIN CYCLE} ____ carbon dioxide molecules from the atmosphere enter the Calvin cycle and combine with 5-carbon compounds already present. They produce twelve 3-carbon molecules

Six

25

What three factors affect photosynthesis?

Temperature, light intensity, and availability of water affect photosynthesis.

26

What is the product of photosystem I?

NADPH

27

ATP and NADPH are two types of _______ carriers.

Energy

28

Where do the light-dependent reactions take place?

in the thylakoid membranes inside of chloroplasts.

29

What does the Calvin cycle use to produce high-energy sugars?

The Calvin cycle uses carbon dioxide molecules as well as ATP and NADPH from the light-dependent reactions to make sugars.