Photosynthesis Basics
What is the energy source for photosynthesis?
the sun
What are the two reactants of photosynthesis?
water and carbon dioxide
How many major stages of photosynthesis are there?
Two
What is the part of a plant where the most photosynthesis happens?
Leaves
What are the products of photosynthesis?
glucose (sugar) and oxygen
What is the chemical formula for glucose?
C6H12O6
Where does the Calvin Cycle take place?
the stroma of the chloroplast
Why does most photosynthesis occur in the leaves of plant?
Leaf cells have the most chloroplasts (and they tend to be broad and flat to capture light energy)
In what organelle does photosynthesis take place?
Chloroplast
What colors of light does chlorophyll absorb? Write at least two of the three.
Red, blue, violet
What are the reactant and product of the Calvin Cycle?
Reactant: Carbon dioxide
Product: Glucose
What are the pores in leaves called that allow gas exchange?
stomata
What pigment absorbs light energy?
Chlorophyll
What is the space inside the chloroplast that is filled with fluid?
the stroma
What are the products of the Light-Dependent Reactions?
ATP and Oxygen gas (and NADPH)
How can the rate of photosynthesis be measured? (Describe one.)
a) by the amount of oxygen produced
b) by the amount of sugar produced
c) by the amount of carbon dioxide used
Where does the light energy absorbed from the sun go as a result of photosynthesis?
into chemical bonds in glucose (carbon-carbon bonds)
thylakoids or grana
Consider all of the O2 that we breathe. From what molecule does ALL of it come?
water (H2O)
What organelle stores water in a plant cell so a plant can live without water (for a while)?
the central vacuole