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BIOL > Ch 8-1 > Flashcards

Ch 8-1 Flashcards

1
Q

What is photosynthesis?

A

A process that converts light energy into chemical energy stored in organic molecules.

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2
Q

What are autotrophs?

A

Organisms that do not rely on other organisms for food.

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3
Q

What are heterotrophs?

A

Organisms that must feed on other organisms for energy.

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4
Q

Where in a plant does photosynthesis occur?

A

In the mesophyll cells of leaves.

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5
Q

What is chlorophyll?

A

A green pigment in chloroplasts that absorbs light energy for photosynthesis.

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6
Q

What two main parts make up the process of photosynthesis?

A

Light reactions and the Calvin Cycle.

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7
Q

What role does water play in the light reactions?

A

Water splits to release electrons, protons, and oxygen.

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8
Q

What is the Calvin Cycle?

A

The cycle that converts carbon dioxide into carbohydrates using energy from light reactions.

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9
Q

What gas is a by-product of photosynthesis?

A

Oxygen.

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10
Q

What molecule carries electrons in photosynthesis?

A

NADP+, which becomes NADPH.

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11
Q

What is chemiosmosis in photosynthesis?

A

A process that generates ATP by moving protons across a membrane.

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12
Q

What is the primary source of carbon in the Calvin Cycle?

A

Carbon dioxide from the atmosphere.

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13
Q

What are the energy carriers used in the Calvin Cycle?

A

ATP and NADPH.

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14
Q

What is the relationship between photosynthesis and cellular respiration?

A

They are interdependent; products of photosynthesis fuel cellular respiration.

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15
Q

What structure in the leaf allows for gas exchange?

A

Stomata

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16
Q

Which of the following is not required for photosynthesis?
A) Water
B) Sunlight
C) Carbon dioxide
D) Oxygen

A

D

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17
Q

Photosynthesis primarily occurs in which part of the plant?
A) Roots
B) Mesophyll cells
C) Stem
D) Phloem

A

B) Mesophyll cells

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18
Q

Which molecule captures light energy?
A) ATP
B) NADPH
C) Chlorophyll
D) Glucose

A

C) Chlorophyll

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19
Q

What is the source of electrons for the light reactions?
A) Carbon dioxide
B) Water
C) Oxygen
D) NADPH

A

B) Water

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20
Q

Which of these is a product of the Calvin Cycle?
A) Oxygen
B) Water
C) Glucose
D) NADP+

A

C) Glucose

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21
Q

Where do light reactions occur?
A) Stroma
B) Thylakoid membrane
C) Chlorophyll
D) Granum

A

B) Thylakoid membrane

22
Q

In photosynthesis, ATP and NADPH are used in which process?
A) Light reactions
B) Calvin Cycle
C) Cellular respiration
D) Photolysis

A

B) Calvin Cycle

23
Q

Which of the following is not an autotroph?
A) Plants
B) Fungi
C) Algae
D) Cyanobacteria

A

B) Fungi

24
Q

Which of the following is not an autotroph?
A) Plants
B) Fungi
C) Algae
D) Cyanobacteria

A

B) Fungi

25
Q

The Calvin Cycle is also known as:
A) Light reactions
B) Dark reactions
C) Cellular respiration
D) Photophosphorylation

A

B) Dark reactions

26
Q

The Calvin Cycle is also known as:
A) Light reactions
B) Dark reactions
C) Cellular respiration
D) Photophosphorylation

A

B) Dark reactions

27
Q

Which pigment gives plants their green color?
A) Xanthophyll
B) Carotene
C) Chlorophyll
D) Anthocyanin

A

C) Chlorophyll

28
Q

Which pigment gives plants their green color?
A) Xanthophyll
B) Carotene
C) Chlorophyll
D) Anthocyanin

A

C) Chlorophyll

29
Q

Which process occurs in the stroma of the chloroplast?
A) Light reactions
B) Calvin Cycle
C) Electron transport chain
D) Krebs cycle

A

B) Calvin Cycle

30
Q

What is the main purpose of the light reactions?
A) Produce oxygen
B) Generate ATP and NADPH
C) Fix carbon
D) Produce glucose

A

B) Generate ATP and NADPH

31
Q

Chemiosmosis in photosynthesis directly results in the production of:
A) NADPH
B) ATP
C) Glucose
D) Oxygen

A

B) ATP

32
Q

The gas exchanged through the stomata includes:
A) Carbon dioxide and water vapor
B) Oxygen and carbon dioxide
C) Water vapor only
D) Nitrogen

A

B) Oxygen and carbon dioxide

33
Q

Which of the following processes is anabolic?
A) Cellular respiration
B) Photosynthesis
C) Digestion
D) Fermentation

A

B) Photosynthesis

34
Q

Which of the following processes is anabolic?
A) Cellular respiration
B) Photosynthesis
C) Digestion
D) Fermentation

A

B) Photosynthesis

35
Q

True or False: Photosynthesis produces energy in the form of ATP.

A

False (It captures and stores energy, not produces it directly.)

36
Q

True or False: Chlorophyll absorbs green light.

A

False (It reflects green light and absorbs other wavelengths.)

37
Q

True or False: Chlorophyll absorbs green light.

A

False (It reflects green light and absorbs other wavelengths.)

38
Q

True or False: Oxygen is a by-product of the Calvin Cycle.

A

False (Oxygen is a by-product of the light reactions.)

39
Q

True or False: Photosynthesis is an anabolic pathway.

A

True

40
Q

True or False: Only plants are autotrophs.

A

False (Some bacteria and algae are also autotrophs.)

41
Q

True or False: The Calvin Cycle is a light-dependent reaction.

A

False (It is light-independent.)

42
Q

True or False: NADP+ is reduced to NADPH during the light reactions.

A

True

43
Q

True or False: Stomata are involved in water and gas exchange.

A

True

44
Q

True or False: ATP and NADPH produced in the Calvin Cycle power the light reactions.

A

False (ATP and NADPH produced in light reactions power the Calvin Cycle.)

45
Q

True or False: Photosynthesis occurs in the chloroplasts.

A

True

46
Q

True or False: The Calvin Cycle produces oxygen as a by-product.

A

False (The light reactions produce oxygen.)

47
Q

True or False: Carbon fixation occurs in the Calvin Cycle.

A

True

48
Q

True or False: The thylakoid membrane is the site of the Calvin Cycle.

A

False (The thylakoid membrane is the site of the light reactions.)

49
Q

True or False: Chlorophyll is found in the stroma.

A

False (It is found in the thylakoid membrane.)

50
Q

True or False: Photosynthesis requires carbon dioxide, water, and light.

A

True

BIOL (31 decks)

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