Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Biology Chapter 7 > Basics Of Photosynthesis > Flashcards

Basics Of Photosynthesis Flashcards

You may prefer our related Brainscape-certified flashcards:
AP® Biology flashcards Biology 101 flashcards
0
Q

Where are the majority of chloroplasts located?

A

Leaves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
1
Q

What does “photosynthetic autotroph” mean?

A

Generate their own organic matter from inorganic ingredients via photosynthesis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Where does the green color in plants come from?

A

Pigment in chloroplast called chlorophyll

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Chlorophyll absorbs…

A

Light energy that the chloroplasts put to work in making food

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Chloroplasts are concentrated in…

A

The interior cells of leaves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Carbon dioxide enters and oxygen exits through…

A

Tiny pores called Stomata

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Where are most stomata found?

A

On the underside of leaves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What does photosynthesis require?

A

Carbon dioxide and water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the main way in which a plant gets it’s water?

A

Mainly absorbed by roots and travels via veins to leaves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is stroma?

A

The thick fluid inside of the chloroplast’s inner membrane

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are thylakoids?

A

Elaborate system of interconnected membranous sacs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What are stacks of thylakoid called?

A

Grana

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

The chlorophyll molecules that capture light energy are built into the…

A

Thylakoid membranes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the equation for photosynthesis?

A

6 CO2 + 6 H2O —-> C6H12O6 + 6 O2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Photosynthesis is not a single process, but…

A

2 processes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are the two stages of photosynthesis called?

A

Light reactions and the Calvin Cycle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What do light reactions do?

A

Convert solar energy to chemical energy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

light reactions use light energy to drive the synthesis of what molecules?

A

ATP and NADPH

18
Q

What is NADPH?

A

An electron carrier

19
Q

In photosynthesis, light drives electrons from water to ______ to form ________.

A

NADP+ (the oxidized form of the carrier), NADPH (the reduced form of the carrier)

20
Q

What does the Calvin Cycle do?

A

Makes sugar from carbon dioxide

21
Q

The ATP generated by the light reactions provide the energy for…

A

Sugar synthesis

22
Q

NADPH produced by light reactions provides what for the reduction of carbon dioxide to glucose?

A

High energy electrons

23
Q

What does the Calvin cycle depend on light reactions for?

A

ATP and NADPH

24
Q

For chloroplasts to produce sugar from carbon dioxide in the dark, they would require an artificial supply of _________ and _______.

A

ATP, NADPH

25
Q

What are the primary inputs and outputs of the Calvin cycle?

A

Inputs: carbon dioxide, NADPH
Output: glucose

26
Q

What is sunlight?

A

Electromagnetic energy

27
Q

What is visible light?

A

The light our eyes see as different colors

28
Q

What happens when light shines on a pigmented material?

A

Certain colors of visible light are absorbed and certain colors are reflected

29
Q

How did german botanist Theodor Elgelmann investigate how light wavelengths affect photosynthesis?

A

He laid a string of freshwater algal cells within a drop of water on a slide. He then added oxygen-sensitive bacteria to the drop. Using a prism he created a spectrum of light and shined it on the slide. His results showed that most bacteria congregated around algae exposed to red-orange and blue-violet light, with very few in the green light.

30
Q

What types of light does chlorophyll-a absorb?

A

Blue-violet and red light

31
Q

What does chlorophyll-a participate in?

A

Light reactions

32
Q

What light does chlorophyll-b absorb?

A

Blue and orange light

33
Q

What does chlorophyll-b do?

A

Broadens the range of light that a plant can use by conveying absorbed energy to chlorophyll-a

34
Q

What color of light do carotenoids absorb?

A

Blue-green

35
Q

What is carotenoids protective function?

A

They absorb and dissipate excessive light energy that would otherwise damage chlorophyll

36
Q

Where are chloroplast pigments located?

A

Built into the thylakoid membranes

37
Q

What is a photon of light?

A

A fixed quantity of light energy

38
Q

The shorter the wavelength of light, the…

A

Greater the energy of the photon

39
Q

Within the thylakoid membrane, chlorophyll is organized with other molecules into….

A

Photosystems

40
Q

What does each photosystem contain?

A

A cluster of a few hundred pigment molecules including chlorophylls a and b and carotenoids.

41
Q

What does a photosystem do?

A

Acts as a light gathering antenna- when a photon strikes one pigment molecule, the energy jumps from one molecule to the next until it arrives at the reaction center of the photosystem.

42
Q

What does the reaction center consist of?

A

A chlorophyll-a molecule that sits next to a primary electron acceptor

Biology Chapter 7 (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions