Photosynthesis Flashcards
Photosynthesis occurs in
plants only
whats photosynthesis
process by which plants and other photosynthetic organisms trap the sun’s energy and transform it into energy rich chemicals
whi does cellular respiration
all plants n animals
whats cellular respiration
process by which cells break down high energy compounds and generate ATP
whats ATP
battery, the direct source of energy for organisms
photosynthesis takes what in to produce ____ and ____
carbon dioxide, water and light energy to produce glucose and oxygen
photosynthesis is an example of a ___ pathway
anabolic
what anabolic pathway
to make larger molecules from simpler ones
cellular respiration takes in what to produce ____ and ___ and release ___
glucose and oxygen to produce carbon dioxide and water and release energy
cellular respiration is an ____ pathway
catabolic
whats catabolic pathway
breaking down larger molecules into smaller ones
key difference between photosynthesis and cellular respiration
the type of energy they use
photosynthesis- light
CR- Releases ATP
whats Leo says ger
Leo- lose electrons= oxidation
ger- gain electrons = reduction
photosynthesis bio 20 definition
energy from sunlight is stored in bonds of glucose
in photosynthesis what is stored glucose used for
converting into structural molecule cellulose
whats a chloroplast
cell organelles
whats chlorophyll
molecules that trap solar energy and give green colour of plant
where are chlorophyll located and bound to
inside chloroplasts bound to thylakoid membranes
whats stroma
inner solution of chloroplast
whats a chloroplast made up of
inner and outer membranes
what are thylakoids
flattened sacs in a chloroplast
whats a grana
stacks of thylakoids
what are stack of thylakoids called
grana
what are the flattened sac in chloroplast called
thylakoids
the two types of metabolic pathway are
light dependent reaction and light independent reaction (dark reaction)
which metabolic reaction occurs when light is present
light dependent
whats a light dependent reaction
reaction that traps solar energy to make high energy compounds (NADPH) - battery like ATP less useful
whats a light independent reaction
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
formula for light reaction
6 CO2+6 H2O +light energy=C6H12O6+6 O2
light independent reaction formula
C6H12O6+6O2= 6CO2+6H2O+ Energy
in Light dependent reaction where is solar energy trapped
in pigment found in thylakoids membrane of chloroplast
2 main types of pigments found innleaves
chlorophyll a- main photosynthesis pigment
chlorophyll b-
chlorophyll a and b absorb what and reflect what
absorb everything but green reflect green which gives leaves tge green apperance
other pigments found in leaves
B carotene
what pigments dise carotene B absorb and reflect
absorb blue green , reflect orange and red
what dose B carotene get converted to and used for
vitamin A made into Retinal the visual pigment in our eyes
in fall leaves what dosecthe chlorophyll do
masks other pigments in spring / summer months
what happens during fall /winter to leaves
cooler temperatures stop chlorophyll production revealing the other carotenoid pigments
why are there multiple types of pigments
sii ok that the leaf can absorb more pigment by hsving more colours present
C6H12O12 CHO takes ___ energy but also ___ alot of energy when ____
takes alot of energy but also provides alot of energy when broken down
oxidation is
losing electrons
reduction is
gaining electrons
do compounds contain more energy in oxidizing or reduction form
reduction because there gaining electrons
whats accomplished by photosynthesis
energy stored in glucose
what is a pigment
molecules capable of absorbing wavelength of light and having particular colour
what happens to electrons that are lost by a compound undergoing a oxidation reaction
transfer to another compound become reduced
