Chapter 6: Photosynthesis Study Guide Flashcards Preview

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Flashcards in Chapter 6: Photosynthesis Study Guide Deck (29):
1

an organism that must get energy from food instead of directly from sunlight or inorganic substances

heterotroph

2

an organism that uses energy from sunlight or from chemical bonds in inorganic substances to make organic compounds

autotroph

3

the process of converting light energy from the sun into chemical energy in the form of organic compounds primarily carbohydrates.

photosynthesis

4

Photosynthesis equation

6CO2 + 6H20 --> C6H12O6 + 6O2
(--> = light energy)

5

The 2 stages of photosynthesis

Light reactions and the Calvin Cycle

6

Where do the light reactions occur?

The thylakoid membrane

7

Where does the Calvin Cycle occur?

The stroma of the chloroplast

8

organelles found in plants and algae where photosynthesis occurs

chloroplast

9

a stack of thylakoids in a chloroplast

granum

10

in plants, the solution that surrounds the thylakoids in a chloroplast

stroma

11

a membrane system found within chloroplasts that contain the components for photosynthesis

thylakoids

12

a compound that absorbs light

pigment

13

The pigments found within thylakoids are __________ and ____________.


chlorophylls and carotenoids

14

What colors of light does chlorophyll absorb?

red and blue

15

What color of light does chlorophyll reflect?

green

16

What colors of light do carotenoids absorb?

yellow, orange, and brown

17

Where do light reactions occur?

in the thylakoids

18

a cluster of pigment molecules and the proteins that the pigment molecules are embedded in

photosystem

19

As electrons move down the electron transport chain they ____ ______.

lose energy

20

The energy the electrons lose as they move down the electron transport chain is used to move ________ (H+) into the _________.

protons, thylakoid

21

The electrons are replaced by electrons that have passed through the electron transport chain from ____________ ___.

photosystem II

22

Products of the light reactions

NADPH and ATP

23

Where do the NADPH and ATP produced in the light reactions go?

They go to the Calvin Cycle to be used for energy.

24

as electrons travel along the electron transport chain, protons move into the thylakoid and build up a concentration gradient. The movement of protons and through ATP synthase results in the synthesis of ATP.

chemiosmosis

25

a series of enzyme-assisted chemical reactions that produces a three-carbon sugar

Calvin Cycle

26

What is produced by the Calvin Cycle?

3 RuBP molecules

27

Leaves take in and release CO2 and release O2 through their ________.

stomata

28

the many openings in a leaf or a stem of a plant that enable gas exchange to occur

stomata

29

Factors that affect photosynthesis

light intensity, level of CO2, and temperature