Brainscape's Knowledge GenomeTM

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


See full index

Bio 204 > Photosynthesis > Flashcards

Photosynthesis Flashcards

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

Photosynthesis

A

Light energy is used to make CO2 into organic molecules

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

Organic molecules

A

Anything with one or more C-H bond

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

Autotrophs

A

Compounds that don’t need anything from the environment

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

Photoautotrophs

A

Use energy from photons to be self sustaining

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

Chemoautotrophs

A

Autotrophs that do not use energy from the sun

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

Ecosystem lifestyle

A

Primary producers (Chemoautotrophs)– primary consumers– dead bodies–decomposers

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

Heterotrophs

A

Require premade energy to survive

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

Photosynthesis occurs in

A

Eukaryotes and bacteria but not archaea

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

Photosynthesis reaction

A

6CO2 + 12H2O– C6H12)6 + 6O2 + 6H20

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

Rate of photosynthesis

A

Measured by CO2 in or O2 out because of their equal molar masses

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

Redox of photosynthesis

A

CO2 is reduced to glucose, water is oxidezed into oxygen

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

2 photosynthetic processes

A

The light reaction and the Calvin cycle

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

The light reaction

A

Pigment captures light energy and makes NADPH and ATP. Electrons needed come from the oxidation of water

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

Calvin cycle

A

Energy in ATP and NADPH is used to make glucose. out of CO2. A reduction reaction called carbon or CO2 fixation occurs

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

All organic molecules

A

Are directly or indirectly products of photosynthesis

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

Photosynthesis location

A

The chloroplast

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

3 membranes of the chloroplast

A

Outer, inner, and intramembrane space

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

Outer membrane

A

Covers the outer surface of the chloroplast

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

Inner membrane

A

Just inside the outer membrane

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Intramembrane space

A

Space between the 2 membranes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Stroma

A

Aqueous environment in the chloroplast

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Thylakoids

A

3rd membrane in the stroma that form closed sacs filled with the thylakoid lumen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Light reaction location

A

Within the thylakoid membrane

24
Q

Calvin cycle location

A

The stroma

25
Q

Cyanobacteria

A

Photosynthesis iccurs in the plasma membrane. Shows that chloroplast is derived from free living cyanobacteria

26
Q

How much CO2 is photosynthesized per year

A

1.1x 10^14 kg

27
Q

What organisms do photosynthesis

A

1/2 of the work is done by phytoplankton. Lots in the poles because of the nutrient rich waters

28
Q

Iron

A

An enzyme cofactor fot the ETC that is crutial for photosynthesis.

29
Q

Increasing iron

A

In the ocean would increase phytoplankton and decrease climate change

30
Q

Photosynthetic apparatus

A

Proteins in the thylakiod membrane responsible for light reactions. On these are pigment molecules that absorb light

31
Q

Photosystem

A

The combination of photosynthetic apparatus and pigment molecules

32
Q

Light and matter interactions

A

Photons or quanta. Not waves.

33
Q

Photons contain energy that

A

Is inverse to its wavelength

34
Q

3 outcomes after a photon is absorbed

A

Florescence, energy transfer electron transfer

35
Q

Florescence

A

An excited electron returns to ground state releasing heat or light with a longer wavelength

36
Q

Energy transfer

A

Energy but not electron is transferred and excited a neighboring electron. Very energy efficient

37
Q

Electron transfer

A

Transferred to near by accepting molecule

38
Q

Light absorbing molecules

A

Chlorophyll and carotenoid

39
Q

Chlorophyll

A

Absorbs green pigment, Chlorophyll a and b are the most dominant. They have different absorption spectrums

40
Q

Absorption spectrum

A

A plot of absorption vs wavelength made from a spectrophotometer.

41
Q

Chlorophyll a

A

Absorbs blue and red light

42
Q

Chlorophyll b and cartenoid

A

Expand the amount of wavelengths a plant can accept

43
Q

Action spectrum

A

A plot of the effectiveness of light of a particular wavelength

44
Q

How to measure for photosynthesis

A

Use a suspension of chlorophyll and measure the outgoing oxygen at different wavelengths

45
Q

Theodor Engelmann

A

First action spectra. Divided white light with a prism. Placed algae strip with bacteria under different wavelengths of light

46
Q

Theodor’s results

A

Bacteria flocked to the red and blue because the most oxygen was present there

47
Q

Other jobs of pigments

A

Transfer energy to neighboring molecules. Efficient because they are bound to protein pigments

48
Q

Pigment proteins

A

Organized into photosystems

49
Q

Photosystems

A

Made of antenna (light harvesting) complex. that surrounds the central reaction center

50
Q

Central reaction center

A

A photosystem made of proteins that bind chlorophyll to the primary electron acceptor

51
Q

Photosystem function

A

Trap energy to oxidize a reaction of electron transfer to the primary electron acceptor.

52
Q

2 photosystems

A

Photo system II and then photo system I

53
Q

Photosystem I

A

Chlorophyll A is called p700 (pigment with the max wavelength absorption of 700nm

54
Q

Photosystem II

A

P680

55
Q

In a chloroplast

A

There are 1000’s of photosystems with 500 chlorophyll molecules each

Bio 204 (23 decks)

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