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Honors Bio > Chapter 7 > Flashcards

Chapter 7 Flashcards

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Biology 101 flashcards
1
Q

The main advantage of C4 Photosynthesis is the ability to avoid …

A

photorespiration

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2
Q

The main advantage of CAM photoynthesis is the ability to avoid …

A

transpiration

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3
Q

In C4 Photosynthesis, CO2 is stored as …

A

oxaloacetate

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4
Q

The main problem encountered by C3 plants in hot condition is …

A

photorespiration

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5
Q

As the rate of photosynthesis increases, light intensity …

A

increases

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6
Q

A plant using the C4 pathway will …

A

fix CO2 into a four carbon sugar instead of a three carbon sugar

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7
Q

The Calvin Cycle occurs in the …

A

stroma

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8
Q

Are Calvin cycle molecules oxidized or reduced?

A

Reduced

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9
Q

The loss of H2O through stomata is …

A

transpiration

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10
Q

What are the products of the Calvin Cycle?

A

G3P, ADP, NADP+

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11
Q

What are the reactants of the Calvin cycle?

A

CO2, NADPH, ATP

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12
Q

Plants can close their stomata when the temperature is hot to prevent …

A

water loss

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13
Q

What is the first phase of the Calvin Cycle?

A

Carbon fixation - CO2 binds to RuBP sugar with help from Rubisco and 6-carbon splits into 2 pyruvates

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14
Q

What is the second phase of the Calvin Cycle?

A

Reduction phase where 3-PGA is converted into G3P and energy from light reactions going into G3P

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15
Q

What is the third phase of the Calvin cycle?

A

Carbohydrate formation - G3P turns into carbohydrates and ATP goes into G3P

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16
Q

What is the fourth phase of the Calvin cycle?

A

Regeneration phase - G3P + ATP used to make RuBP

17
Q

Which part of the chloroplast contains chlorophyll?

A

The thylakoid membrane

18
Q

Where is the energy from the sunlight used?

A

In the light dependent reaction/thylakoids

19
Q

Is the Calvin cycle light-dependent or light-independent?

A

Light independent

20
Q

Is CO2 involved in the light dependent reactions?

A

No

21
Q

When water is split what three things are produced?

A

Oxygen, H+ ions, and electrons

22
Q

Through which molecule in the membrane does the H+ leaking process occur?

A

ATP synthase

23
Q

How many CO2 molecules enter the Calvin cycle?

A

3

24
Q

What is the first molecule produced after the introduction of CO2?

A

PGA

25
Q

How many carbon atoms does PGA contain?

A

3

26
Q

How many turns of the Calvin Cycle are required to produce one molecule of glucose?

A

6

27
Q

Chlorophyll a and b absorb … and … wavelengths of light best

A

blue-violet, red

28
Q

What is the main light absorbing pigment found in green plants?

A

Chlorophyll

29
Q

The gel-filled space inside the chloroplast surrounding the thylakoid stacks is called the …

A

stroma

30
Q

Which plants only use the Calvin-Benson cycle in mesophyll cells to fix carbon?

A

C3 Plants

31
Q

Which plants fix carbon twice?

A

C4 Plants

32
Q

Which plant is water conserving and use an alternate carbon fixing sytem at night?

A

CAM Plants

33
Q

What is A?

A

Thylakoid

34
Q

What is B?

A

Stroma

35
Q

What is C?

A

Granum

36
Q

What is made during light dependent reactions?

A

ATP, NADPH

37
Q

Water splitting occurs in … (cyclic/non-cyclic phosphorylation)

A

Non-cyclic phosphorylation

38
Q

CO2 is fixed to RuBP in … (cyclic/non-cyclic phosphorylation)

A

Cyclic phosphorylation

Honors Bio (21 decks)

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