Brainscape's Knowledge GenomeTM

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


See full index

Biology > Chapter-9 > Flashcards

Chapter-9 Flashcards

You may prefer our related Brainscape-certified flashcards:
AP® Biology flashcards Biology 101 flashcards
1
Q

Photosynthesis

A

Convert light energy into stored chemical energy of organic molecules

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

What happens when a molecule absorbs a photon of light energy?

A

Electrons become energized

Electron shifts from a lower energy atomic orbital to a high energy orbital

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

Wave length

A

Distance from one wave peak to the next

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

Photons

A

Light is composed of small particles,or packets of energy

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

Ground state

A

Condition in which all its electrons are in their normal lowest energy levels

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

Fluorescence

A

An emission of light of a longer wave length than the absorbed light

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

Chloroplasts

A

Lie manly inside the leaf in the cells of mesophyll

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

Mesophyll

A

A layer that includes many air spaces and a very high concentration of water vapor

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

How many chloroplasts in a mesophyll cell

A

20-100

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

Stroma

A

a fluid filled region which contains most of the enzymes required to produce carbohydrate molecules

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

Thylakoids

A

Flat disc like sacs

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

Thylakoid lumen

A

Fluid filled interior space

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

Grana

A

Stacks of thylakoid sacs

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

Chlorophyll

A

The main pigment of Photosynthesis

Absorbs light primarily in the blue and red regions of the visible spectrum

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

Chlorophyll a

A

The pigment that indicates the light dependent reactions

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

Chlorophyll b

A

An accessory pigment

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

Carotenoids

A

Accessory photosynthetic pigments that are yellow and orange

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Absorption spectrum

A

Plot of its absorption spectra for chlorophylls a and b

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Action spectrum

A

A graph of of the relative effectiveness of different wavelengths of light

20
Q

Light dependent reactions

A

Light energy converted to chemical energy.

Associated with thylakoids

21
Q

Adenosine diphosphate forms adenosine triphosphate how

A

Energy of energized electrons used to phosphate

In addition NADP+ becomes reduced forming NADP1

22
Q

Carbon fixation

A

Energy is transferred to chemical bonds in carbohydrates which can be produced in large quantities and stored for future use. Takes place in the stroma

23
Q

Photosystem 1 and 2

A

1- pair of chlorophyll a molecules with an absorption peak at 700nm referred to as p700
2- same but peak at 680nm referred to as P680

24
Q

Noncyclic electron transport

A

Events associated with photosystem 1

25
Q

Electron transport chain

A

Energized electron passed along from 1 electron acceptor to another

26
Q

Photolysis

A

Light splitting of water

27
Q

ATP synthase

A

?

28
Q

Chemiosmosis

A

Diffusion down a proton gradient

29
Q

Calvin cycle

A

Carbon fixation through a sequence of 13 reactions

30
Q

Ribulose bisphosphate

A

Reaction of CO2 with a phosphorylated five carbon compound

31
Q

Rubisco

A

Reaction enzyme

32
Q

Phosphoglycerate

A

?

33
Q

C3 plants

A

Plants that initially fix carbon

34
Q

C3 pathway

A

Another name for Calvin cycle

35
Q

G3P

A

?

36
Q

Photorespiration

A

1 occurs in the presence of light
2 requires oxygen
3 produces CO2 and H2O
Does not produce ATP

37
Q

C4 plants

A

Fix CO2 into four carbon compound.

38
Q

Oxaloacetate

A

four carbon compound.

39
Q

CAM plants

A

Fix carbon at night

40
Q

C4 pathway

A

CO2 is fixed through the formation of oxaloacetate

41
Q

PEP Carboxylase

A

Catalysts the reaction by which CO2 reacts with the three carbon compound.

42
Q

CAM pathway

A

Special carbon fixation pathway

43
Q

Autotrophs

A

Chemical energy that can’t be stockpiled and unstable

44
Q

Chemoheterotrophs and heterotrophs

A

Animals, fungi, most prokaryotes

45
Q

Photoheterotrophs

A

Able to use light energy but unable to carry out carbon fixation.

46
Q

Chemoautotrophs

A

Obtain their energy from oxidation of reduced inorganic molecules

Biology (3 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions