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Bio 20 > Photosynthesis > Flashcards

Photosynthesis Flashcards

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Biology 101 flashcards
1
Q

Photosynthesis occurs in

A

plants only

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2
Q

whats photosynthesis

A

process by which plants and other photosynthetic organisms trap the sun’s energy and transform it into energy rich chemicals

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3
Q

whi does cellular respiration

A

all plants n animals

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4
Q

whats cellular respiration

A

process by which cells break down high energy compounds and generate ATP

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5
Q

whats ATP

A

battery, the direct source of energy for organisms

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6
Q

photosynthesis takes what in to produce ____ and ____

A

carbon dioxide, water and light energy to produce glucose and oxygen

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7
Q

photosynthesis is an example of a ___ pathway

A

anabolic

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8
Q

what anabolic pathway

A

to make larger molecules from simpler ones

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9
Q

cellular respiration takes in what to produce ____ and ___ and release ___

A

glucose and oxygen to produce carbon dioxide and water and release energy

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10
Q

cellular respiration is an ____ pathway

A

catabolic

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11
Q

whats catabolic pathway

A

breaking down larger molecules into smaller ones

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12
Q

key difference between photosynthesis and cellular respiration

A

the type of energy they use
photosynthesis- light
CR- Releases ATP

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13
Q

whats Leo says ger

A

Leo- lose electrons= oxidation
ger- gain electrons = reduction

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14
Q

photosynthesis bio 20 definition

A

energy from sunlight is stored in bonds of glucose

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15
Q

in photosynthesis what is stored glucose used for

A

converting into structural molecule cellulose

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16
Q

whats a chloroplast

A

cell organelles

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17
Q

whats chlorophyll

A

molecules that trap solar energy and give green colour of plant

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18
Q

where are chlorophyll located and bound to

A

inside chloroplasts bound to thylakoid membranes

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19
Q

whats stroma

A

inner solution of chloroplast

20
Q

whats a chloroplast made up of

A

inner and outer membranes

21
Q

what are thylakoids

A

flattened sacs in a chloroplast

22
Q

whats a grana

A

stacks of thylakoids

23
Q

what are stack of thylakoids called

A

grana

24
Q

what are the flattened sac in chloroplast called

A

thylakoids

25
Q

the two types of metabolic pathway are

A

light dependent reaction and light independent reaction (dark reaction)

26
Q

which metabolic reaction occurs when light is present

A

light dependent

27
Q

whats a light dependent reaction

A

reaction that traps solar energy to make high energy compounds (NADPH) - battery like ATP less useful

28
Q

whats a light independent reaction

A

the energy of ATP and reducing power of NADPH are used ti reduce CO2 and make glucose which can be converted to starch for storage

29
Q

formula for light reaction

A

6 CO2+6 H2O +light energy=C6H12O6+6 O2

30
Q

light independent reaction formula

A

C6H12O6+6O2= 6CO2+6H2O+ Energy

31
Q

in Light dependent reaction where is solar energy trapped

A

in pigment found in thylakoids membrane of chloroplast

32
Q

2 main types of pigments found innleaves

A

chlorophyll a- main photosynthesis pigment
chlorophyll b-

33
Q

chlorophyll a and b absorb what and reflect what

A

absorb everything but green reflect green which gives leaves tge green apperance

34
Q

other pigments found in leaves

A

B carotene

35
Q

what pigments dise carotene B absorb and reflect

A

absorb blue green , reflect orange and red

36
Q

what dose B carotene get converted to and used for

A

vitamin A made into Retinal the visual pigment in our eyes

37
Q

in fall leaves what dosecthe chlorophyll do

A

masks other pigments in spring / summer months

38
Q

what happens during fall /winter to leaves

A

cooler temperatures stop chlorophyll production revealing the other carotenoid pigments

39
Q

why are there multiple types of pigments

A

sii ok that the leaf can absorb more pigment by hsving more colours present

40
Q

C6H12O12 CHO takes ___ energy but also ___ alot of energy when ____

A

takes alot of energy but also provides alot of energy when broken down

41
Q

oxidation is

A

losing electrons

42
Q

reduction is

A

gaining electrons

43
Q

do compounds contain more energy in oxidizing or reduction form

A

reduction because there gaining electrons

44
Q

whats accomplished by photosynthesis

A

energy stored in glucose

45
Q

what is a pigment

A

molecules capable of absorbing wavelength of light and having particular colour

46
Q

what happens to electrons that are lost by a compound undergoing a oxidation reaction

A

transfer to another compound become reduced

Bio 20 (21 decks)

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