Basic Info On Photosynthesis

1. Plants need photosynthesis to live

True

False

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7. Where are the pigments involved in photosynthesis located?

The nucleus of leaf cells

The chloroplasts of leaf cells

The mitochondria of leaf cells

8. What is this equation for?

Krebs cycle

Photosynthesis

Cellular respiration

Calvin cycle

9. What is the primary pigment in photosynthesis?

Chloroplasts

Mitochondria

Chlorophyll

10. Excited electrons combine with hydrogen ions as well as an electron acceptor called NADP+ which makes NADPH.

True

False

11. What is the function of photosynthesis?

To make galactose using sunlight

To make enzymes using sunlight

To make sucrose using sunlight

To make glucose using sunlight

12. Check off the different types of chlorophyll in a plant

Chlorophyll A

Chlorophyll B

Chlorophyll C

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13. Where does photosynthesis occur?

Mitochondria

Chlorophyll

Chloroplast

Nucleus

14. Light is a form of radiation

True

False

15. What is the only kind of radiation that humans can see?

Visible light

Heat radiation

Radiation from space

Radiation from microwaves

16.

Which depicts an open stomata?

The picture on the left

The picture on the right

Neither picture

17. Clusters of pigments are in the membranes of disk-shaped structures called thylakoids

True

False

18. What is the enzyme that during step 1 of the Calvin Cycle combines a molecule of carbon dioxide with a 5-carbon molecule, Ribulose?

Protease

Ribosomes

RuBisCO

Bromelain

19. Excited electrons loose some of their energy as they each pass through proteins.

True

False

20. How are some hydrogen ions made in the thylakoid?

The light from the sun creates them

By splitting hydrogen ions

By splitting water molecules

By building pigments

21. The reactions that fix carbon dioxide are sometimes called dark reactions because they are light independent

True

False

22. What is the Calvin Cycle named for?

An American biochemist whoes name was Melvin Calvin

An American biochemist whoes name was Alvin Calvin

An American biochemist whoes name was Albert Einstein

23. What are the tiny holes, or pores, on the surface of a leaf called?

Stomara

Stomata

Chloroplasts

Vesicles

24. Where is the primary electron acceptor located?

Mitochondria

Outer membrane

Thylakoid membrane

Carbohydrates

25. When excited electrons leave a chlorophyll molecule, it doesnt have to be replaced by another electron.

True

False

26. Stages 1 and 2 of photosynthesis are known as what?

The Dark Reactions

The Light Reactions

The coefficient Reactions

27. What is light energy used for?

To make energy storing compounds

For fun

To convert sugars to sunlight

To consume food

28. What is the Calvin cycle?

A series of enzyme-assisted chemical reactions that make a 2-carbon sugar

A series of enzyme-assisted chemical reactions that make a phosphate group

A series of enzyme-assisted chemical reactions that make a 3-carbon sugar

29. What is a carotenoid?

A pigment similar to chlorophyll A in almost every way

A pigment that absorbs the same wavelengths that chlorophyll does, just does different things with the light

An accessory pigment that absorbs different wavelengths of light than chlorophyll

30. When a substance looses electrons, what kind of reaction does it undergo?

Photosynthesis

Oxidation reaction

Cellular respiration

Reoxidation reaction

31. As time goes on, there are more hydrogen ions inside the thylakoid than outside, creating a concentration gradient across the thylakoid membrane.

True

False

32. What is the protein involved in the diffusion of hydrogen ions called?

ADP

ADP synthase

ATP

ATP synthase

33. The transfer of carbon dioxide to organic compounds is called?

Carbon dioxide fixation

Oxidation

Redox reaction

Carbondioxideosis

34. What molecules control the reaction rate of photosynthesis?

Sugars

Enzymes

Fatty acids

Nucleic acids

35. What controls the opening and controlling of the stomata?

The leaves of the plant

The stem of the plant

Gaurd cells

There is no control

36. The Calvin cycle is the least common method of carbon dioxide fixation and it takes place in the stroma of the chloroplast

True

False

The Calvin cycle is the MOST common method of carbon dioxide fixation and it takes place in the stroma of the chloroplast

Explanation

The Calvin cycle is the MOST common method of carbon dioxide fixation and it takes place in the stroma of the chloroplast

37. What is the first stage of photosynthesis?

The chemical energy (stored in ATP and NADPH) powers the formationof otganiccomounds , using carbon dioxide

Energy is captured from sunlight

The flower dances around to capture sunlight

38. In the second step of the second step, when PGA is converted into PGAL, 1,3-BPGA recieves a protion from where?

NAD

NADPH

Hydrogen ions

39. Chlorophyll B is known as an...

Excess pigment

Necessary pigment

Accesory pigment

Helping pigment

40. What powers stage three of photosynthesis?

ADP

ADP synthase

ATP

ATP synthase

41. What substance accepts the electrons from the oxidation and reduction reaction?

The secondary electron acceptor

Chloropyll

The photosystem

The primary electron acceptor

42. What is the energy lost by the electrons used to do?

Pump hydrogen ions into the thylakoid

Pump hydroxide ions into the thylakoid

Pump hydrogen ions out of the cell

Pump hydroxide ions out of the cell

43. What is photosynthesis?

The process where energy is converted into ATP

The process where light undergoes a series of changes

The process that provides energy for almost all life

The process that provides light

44. How can electrons move from chlorophyll molecules to other nearby molecules?

They use vesicles to move

They float through liquid

When the electrons are excited, they are unstable and they jump

Electrons are unable to move

45. What is the process of chemiosmosis?

46. At the same time light is absorbed by PSII, light is also absorbed by PSI.

True

False

47. Where do electrons move from a chlorophyll a molecule in PSI?

Out of the plant

Stay where they are

The PSII

To another primary electron acceptor

48. In photosynthesis is energy released or used?

Used

Released

Neither

49. If the stomata are closed, what happens?

Oxygen builds up inside the plant and the CO2 concentration is low

CO2 builds up inside the plant and the CO2 concentration is low

Oxygen builds up inside the plant and the CO2 concentration is high

Oxygen builds up outside the plant and the CO2 concentration is low

50. Plants close their stomata part way during the coldest part of the day, to minimize water loss.

True

False

Plants close their stomata part way during the HOTTEST part of the day, to minimize water loss.

Explanation

Plants close their stomata part way during the HOTTEST part of the day, to minimize water loss.

51. Check off all of the mainchemical compounds that make up the bodies of living organisms

Carbon

Chloride

Sodium

Oxygen

Hydrogen

Neon

Zinc

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52. The process of converting PGA into another 3-carbon molecule consists of how many steps?

1

2

3

5

53. The first step of step 2, converting PGA into another 3 carbon molecule is..
(This produces a molecule called 1,3- biphosphyoglycerate and a molecule of ADP)

No changes occur

The enzyme phosphyoglycerate kinase takes away a phosphate group to PGA

The enzyme phosphyoglycerate kinase adds a phosphate group to PGA

54. What is the distance of a wavelength?

The distance 3light rays

The distance between the beginning wave and the end wave

The distance between 3 heat waves

The distance between 2 consecutive waves

55. Check off the things in a hydrogen atom

One electron

Hydroxide ion

Two protons

One proton

Carbohydrate

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56. When do light reactions begin?

When accessory pigment molecules in PSI absorbs light

When accessory pigment molecules in both photosystems absorb light

When accessory pigment molecules in PSII absorbs light

57. For every 3 carbon dioxide molecules in the Calvin Cycle, how many 2-carbon sugars wil be used to make organic compounds?

1

2

3

58. Since stage three does not require light, it is dark.

True

False

59. How much energy do plants, algae, and some bacteria capture from the sunlight that reaches earth?

1%

10%

10,000 watts

100,000 watts

60. How many stages are there of photosynthesis?

1

2

3

5

61. Because of the concentration gradient, where will hydrogen ions go?

They will diffuse back out of the thylakoid, down their concentration gradient through the sodium potassium pump

They will diffuse back out of the thylakoid, down their concentration gradient through specialized carrier proteins

They will diffuse into the thylakoid, down their concentration gradient through specialized carrier proteins

They will diffuse back out of the thylakoid, against their concentration gradient through specialized carrier proteins

62. Each turn of the Calvin cycles fixes on carbon dioxide molecule. How many turns of the cycle would it take to make a molecule of PGAL?

1

2

3

It would take 3, because PGAL is a 3 carbon molecule

Explanation

It would take 3, because PGAL is a 3 carbon molecule

63. Inb step 2 of the Calvin Cycle, PGA is converted into another 3-carbon molecule The called...

Pyruvate

Phosphoglycerate

PGAL

64. Check off the colors that chlorophyll absorbs

Red

Blue

Yellow

Green

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65. Check off all factors that directly affect photosynthesis

Light

Music being played around plant

Carbon Dioxide Concentration

Amount of water in clouds

Location of plant

Temperature

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66. The first and second stages of photosynthesis can occur with the absorption of light

True

False

67. In step 1 of the Calvin cycle where does carbon dioxide diffuse into?

Carbon dioxed does not diffuse in step 1

The cytosol from the stroma

From PSI to PSII

The stroma from the cytosol

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