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Flashcards in Photosynthesis Deck (60):
1

What is the term for the ability to perform work?

Energy

2

Animals that cannot make their own food are called?

Heterotrophs or consumers

3

Most organisms use an energy storage molecule called_________ ?

Adenosine triphosphate ATP

4

Light of different colors is different in_____ and ______

Wavelength and frequency

5

During photosynthesis, a reduction reaction ______ to a molecule.

Adds electrons

6

In order to reduce something what has to occur?

Oxidation

7

Oxidation is a process that makes a molecule lose what?

Electrons

8

Disk shaped structures with photosynthetic pigments are know as?

Thylakoids

9

The process by which autotrophs convert sunlight into energy is called?

Photosynthesis

10

A molecule that can absorb certain wavelengths and reflect others is a?

Pigment

11

What are the most common group of photosynthetic pigments in plants?

Chlorophyll

12

Stroma are gel like Matrix that surrounds the ?

Thylakoid

13

Photosynthesis occurs in two stages called?

Light reactions and dark reactions

14

Plants that use only the Calvin cycle for photosynthesis are called?

C3

15

What substances do autotrophs or producers use to make food?

Water, carbon dioxide, sunlight

16

The addition of an electron to an atom or a Molecule is called?

Reduction

17

The loss of an electron to an atom or a molecule is called?

Oxidation

18

Organisms that can produce their own food are called?

Autotrophs or producers

19

An important waste product of photosynthesis is?

Oxygen

20

Photosynthesis occurs in what organelle of plants and algae?

Chloroplast

21

The thylakoids are surrounded by a gel like matrix called?

Stroma

22

An object that absorbs all colors appears what color?

Black

23

What are the light collecting units of the chloroplast?

Thylakoid membrane

24

Carbon fixing reactions occur in a pathway called the?

Calvin cycle

25

Chlorophyll reflects and transmits what color?

Green

26

An object that reflects all colors appears what color?

White

27

Folded thylakoids that resemble stacks of pancakes are called?

Granum

28

The pigments that absorb violet, blue, and red light are?

Chlorophyll A and B

29

The enzyme that adds a phosphate group to ADP is?

ATP Synthase to form ATP

30

What do we call the component colors of white light?

Visible spectrum

31

What clusters of pigments are called

Photo systems

32

A five carbon carbohydrate in the Calvin cycle

Ribulose Dyphosphate

33

A three carbon molecule in the Calvin cycle

PGAL

34

A series of linked chemical reactions is called a

Biochemical reaction

35

The pigments that absorb blue and green light are called

Carotenoid

36

The oxygen atoms in the oxygen gas produced in photosynthesis come from

Photo system 2

37

Where does the energy required for the Calvin cycle originate?

From ATP and ADP produced by the light reactions

38

Protons are move into the thylakoids using energy from

Electrons in a transport train

39

At the end of photosystem 1 transport chain, electrons combine with To form

NADP+. NADPH

40

Carbon atoms are fixed into organic compounds in the

Calvin cycle

41

To produce the same amount of carbohydrate C4 plants require less________than C3 plants

Carbon dioxide

42

Where in the chloroplast do the reactions of the Calvin cycle occur?

Stroma

43

What product of the light reactions of photosynthesis is released and does not participate further in photosynthesis?

Oxygen

44

Which environmental factor will cause a rapid decline in the photosynthesis rate if the factor rises above a certain level?

Light intensity and temperature

45

Accessory pigments differ from chlorophyll A in that they are ___ directly _____involved in the ______of photosynthesis

Not. Light reactions

46

Which of the colors absorbed by chlorophyll is least visible?

Blue

47

What colors are the least absorbed but most seen?

Green and yellow

48

What is the difference between catabolism and anabolism?

Catabolism breaks down and anabolism builds

49

Explain the ecological pyramid

It starts with the producers that have 100% energy and then the pyramid goes up multiplying by 10. The primary consumers have 10%, the secondary 1% and the tertiary .1%

50

The scientist who concluded that most of the mass of a plant came from water was who?

Van Helmont

51

What is the photosynthesis formula ?

Sunlight+6CO2+6H2O=Sugars+ 6O2

52

What is the difference between endothermic and exothermic?

Endothermic absorbs energy and is anabolic
Exothermic releases energy and is catabolic

53

Describe light reactions

They require light to work. It reduces NADP+ to NADPH . Occurs in the thylakoid.Uses photo system 1 and 2. It oxidizes water. Creates ATP

54

The electrons essential to the oxygen production process in the light reactions are taken from?

Water

55

The energy stored by photosynthesis is released by?

Light reactions

56

Where in the chloroplast do the light reactions take place?

Granum

57

What is produced at the end of photosystem one

ATP and NADPH

58

Where does the energy of the Calvin cycle come from?

ATP and NADPH

59

Explain why water molecules are so important in photosynthesis

It's the source of hydrogen for the sugars

60

Explain dark reactions AKA Calvin cycle.

Requires ATP and NADPH from photosystem 1 which are used to reduce carbon. Occurs in the stroma. The output is fats carbs and proteins. Ribulose dyphosphate is recycled