Photosynthesis Flashcards
reactants
the inputs of a chemical reaction. Location on the left side of a chemical equation
products
the outputs of a chemical reaction. located on the right side of a chemical equation
xylem
carries water and minerals through a plant
stomata
small openings on the underside of a leaf through which oxygen and carbon dioxide can move. where gas exchange occurs in a plant
phloem
carries food (glucose) through a plant
chlorophyll
pigment which fills chloroplast. this pigment abosrbs sunlight
chloroplast
location inside of a plant cell where the process photosynthesis takes place occurs
photosyntesis
conversion of light energy from the sun into chemical energy (stored in glucose)
oxygen
chemical that plants release
carbon dioxide
a gas that plants take in (reactant) through small holes in their leaves for the process of photosynthesis
what are the three main ingredients/reactants of photosythesis
water, sunlight, carbon dioxide
leaves
these open up to collect sunlight and contain the chloroplasts which produce food
stem
supporting structure of a plant that connects roots and leaves and carries water and nutrients between them
carbohydrates
chains of glucose
-ose
the suffix for all sugars
upper epidermis layer
a single layer of clear cells that allow light to pas through and prevents the loss of water
petiole
the stalk of a leaf, which joins the leaf to a node of the system
cuticle
the waxy, waterproof layer that covers the leaves and stems of most plants
spongy layer
loosely-packed chloroplast-bearing cells in the interior of leaves; surrounded by air space
stomata
small openings on the underside of a leaf through which oxygen and carbon dioxide can move
guard cells
the two cells that flank the stomatal pore and regulate the opening and closing of the pore
grana
stacks of thylakoids
stroma
fluid portion of the chloroplast; outside of the thylakoid
chlorophyll
green pigment in plants that absorbs light energy used to carry out photosynthesis
calvin cycle
light-independent reactions of photosythesis in which energy from ATP and NADPH is used to build high-energy compounds usch as sugar
light-dependent reactions
reactions of photosythesis that use enrgy from light to produce ATP and NADPH
what is NADPH
an electron carrier
what are electrons
energy
endergonic
energy “created” using this part
doesn’t require light
exergonic
light-dependent
releases energy; energy is a result of this reaction
steps of a calvin cycle
step 1
- CO2 fixation
- CO2 diffuses into the stroma and combines with RuBP (ribulose bisphosphate) with the help of enzymes
step 2
- six carbon molecules are unstavle and split into 3-carbon compounds
step 3
- one G3P molecule leaves the Calvin cycle and is used to make organic compounds (glucose chain)
step 4
- the remaining G3P molecules are converted back into the 5-carbon molecules RuBP and re-enter the Calvin cycle