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Cell Mol: Exam 3 > Photosynthesis I > Flashcards

Photosynthesis I Flashcards

1
Q

What is the primary process that allows trees to grow by pulling substances out of the air?

A

Photosynthesis

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2
Q

What are the two basic metabolic models in the context of nutrition?

A
  • Autotrophs
  • Heterotrophs
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3
Q

What is the role of autotrophs in the ecosystem?

A

Produce organic molecules from CO2

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4
Q

What process do photoautotrophs use to convert light energy?

A

Use light energy to drive the process of photosynthesis

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5
Q

What is the overall equation for photosynthesis?

A

Energy + 6 CO2 + 6 H2O → C6H12O6 + 6 O2

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6
Q

What is the overall equation for cellular respiration?

A

C6H12O6 + 6 O2 → 6 CO2 + 6 H2O + Energy

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7
Q

True or False: Photosynthesis is the reverse of cellular respiration.

A

False

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8
Q

What are the two stages of photosynthesis?

A
  • Light-Dependent Reactions
  • Light-Independent Reactions
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9
Q

What is the purpose of the Calvin Cycle?

A

Reduce inorganic atmospheric carbon (CO2) to carbohydrate (CH2O)n

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10
Q

What is the final product of the Calvin Cycle?

A

Glyceraldehyde 3-Phosphate (G3P)

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11
Q

What is the distinction between NADH and NADPH?

A

NADPH is used in anabolic reactions

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12
Q

What is the role of light in the light-dependent reactions?

A

Visible light is required

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13
Q

Fill in the blank: The process of photosynthesis involves a series of ______ reactions.

A

redox

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14
Q

What does the 1st Law of Thermodynamics state?

A

Energy can be converted from one form to another but cannot be created or destroyed.

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15
Q

What is the function of chloroplasts in eukaryotic cells?

A

Specialized organelles for photosynthesis

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16
Q

What happens to electrons during cellular respiration?

A

Electrons are removed from carbohydrates and added to oxygen

17
Q

What happens to water (H2O) in photosynthesis?

A

H2O is oxidized to O2

18
Q

What is the significance of the term ‘Oil Rig’ in redox reactions?

A

Oxidation Is Loss; Reduction Is Gain

19
Q

What are the reactants needed for the light-independent reactions?

A
  • CO2
  • Electrons (and H+)
  • NADPH
  • ATP
20
Q

Who discovered the Calvin Cycle?

A

Melvin Calvin

21
Q

What is the nature of the reactions involved in photosynthesis?

A

Anabolic reaction: Endergonic

22
Q

What is the nature of the reactions involved in cellular respiration?

A

Catabolic reaction: Exergonic

Cell Mol: Exam 3 (6 decks)

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