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bio semester 1 > photosynthesis > Flashcards

photosynthesis Flashcards

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Biology 101 flashcards
1
Q

Energy consists of what 3 parts?

A

Nitrogen Base - Adenine
Sugar - Ribose
3 Phosphate groups

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2
Q

How is energy stored in Phosphate bonds?

A

Breaking bonds release energy
Building bonds require energy

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3
Q

How do heterotrophs obtain energy?

A

Consuming organic compounds from other living organisms

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4
Q

How do autotrophs obtain energy?

A

Building their own organic compounds from sunlight

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5
Q

What is Photosynthesis?

A

conversion of light energy into chemical energy in form of glucose

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6
Q

Sunlight is made of what?

A

All colors of light

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7
Q

Colors we see are what?

A

Not absorbed by that object

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8
Q

What is chlorophyll?

A

Main pigment in plants

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9
Q

What does chlorophyll do?

A

Absorbs most colors of light except green then transfers to electrons

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10
Q

What is the thylakoid?

A

Sac-like membrane containing chlorophyll and in stacks called grana

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11
Q

What is the stroma?

A

Fluid filled portion outside thylakoid

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12
Q

What does NADP+ do?

A

Picks up 1 H+ ion and 2 high energy electrons to become NADPH

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13
Q

Light dependent reactions require __

A

Light

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14
Q

Light energy turns into ___ energy

A

Chemical

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15
Q

Where do light dependent reactions occur?

A

Thylakoid

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16
Q

Light independent reactions do not ____ ____

A

Require light

17
Q

What does chemical energy use to produce glucose?

A

ATP/NADPH

18
Q

Where do Light independent reactions occur?

A

Stroma

19
Q

what energy does light independent reactions use?

A

chemical energy (ATP,NADPH)

20
Q

what does chlorophyll do in photosystem 2?

A

harnesses light energy into electrons

21
Q

what do the electrons do after being carried to etc in photosystem 2?

A

splitting of water replaces e-, releases H+ to thylakoid,and releases O2

22
Q

ETC

A

e- drops off energy moving through the ETC

23
Q

do H+ ions get pumped from low to high, or high to low?

A

low to high

24
Q

how can H+ get passes back through?

A

ATP synthase

25
Q

photosystem 1

A

e- are reenergized by sunlight and then 2 are added to NADP+ along with a H+ making NADPH

26
Q

what is the light independent reaction known as?

A

Calvin cycle

27
Q

Calvin cycle

A

utilizes resources from light dependent reactions and environment

28
Q

carbon fixation

A

energy is uses to assemble C,H,O into glucose

29
Q

where in ATP is most of the energy located

A

in the bond between the last 2 phosphate groups

30
Q

what organelle does photosynthesis occur in

A

chloroplast

31
Q

what gas is produced in photosynthesis

A

oxygen

32
Q

what is the main pigment in green plants?

A

chlorophyll

bio semester 1 (6 decks)

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