Photosynthesis Flashcards Preview

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Flashcards in Photosynthesis Deck (36):
1

Organisms that consume materials as food for energy, such as animals, fungi, and some bacteria.

Heterotrophs

2

Organisms that eat only plants.

Herbivores

3

Organisms that eat other animals (meat).

Carnivores

4

Organisms that eat both plants and animals.

Omnivores.

5

This is the process of converting light, carbon dioxide, and water into high energy sugars and oxygen.

Photosynthesis

6

This organelle is responsible for conducting photosynthesis.

Chloroplast

7

These are membrane sacs filled with pigments.

Thylakoids

8

This is a stack of thylakoids.

Granum (grana is plural)

9

Fluid filled with water, enzymes, and organic compounds....fills the chloroplast and is the site of the Calvin Cycle.

Stroma

10

Light absorbing molecules

Pigments

11

This is the principle pigment in plants...its green!

Chlorophyll

12

This is the acronym for the colors found in sunlight (white light).

ROY G BIV

13

Plants reflect what color?

The color of their pigment, which for most plants is GREEN!

14

What two substances do plants take in during the Light Dependent Reaction?

Light and water

15

Light is used in photosystem II to...

Excite the electrons (increase their energy)

16

Water is broken down in photosystem II into:

Electrons, oxygen, and H+ ions.

17

The electrons lost by water are used to...

Replace chlorophyll's electrons.

18

The oxygen formed is given off as

Waste

19

The H+ ions are used in

Photosystem I to make NADPH

20

The electron transport chain that follows photosystem II will make:

ATP

21

In photosystem I, light is used to:

Re-energize the electrons from photosystem II

22

The electron transport chain that follows photosystem I will make:

NADPH

23

Carbon dioxide enters the leaves through these stuctures....they kind of look like mouths.

Stomata

24

In the Calvin cycle, carbon dioxide will bind with this substance... It's in the stroma.

RuBP

25

This enzyme is responsible for binding carbon dioxide to RuBP:

RUBISCO

26

After carbon dioxide and RuBP bind, they form:

P-GAL (phosphoglycerldehyde)

27

Using ATP and NADPH, P-GAL is converted into:

Glucose

28

ATP is also used in the Calvin cycle to:

Convert the remaining carbon compounds into RuBP.

29

The purpose of the Calvin cycle is to make:

Glucose (food)!

30

This factor affects photosynthesis by determining if the plant/organism will have enough energy.

Light intensity (number of hours of light)

31

This factor affects photosynthesis in that without enough of this substance...it would be hard to make glucose!

Carbon dioxide

32

This factor affects photosynthesis in two ways...
1. It keeps the organism healthy
2. It is a source of electrons

Water

33

This factor affects photosynthesis in that if its not ideal, then enzymes will struggle to function.

Temperature

34

This alternate form of photosynthesis is great in hot, tropical climates because it uses a 4-carbon compound to speed up the Calvin cycle.

C4

35

This alternate form of photosynthesis is great in hot, dry climates because the stomata will open at night to prevent water evaporation.

CAM

36

Organisms that make their own food for energy, such as plants and some bacteria.

Autotrophs