Photosynthesis Study Guide Flashcards
what is photosynthesis?
A process that captures energy from sunlight to make sugars that stores chemical energy
Directly on indirectly, the energy for almost all organisms begin as…
Sunlight
Plants absorb ____ ____ in order to carry out photosynthesis
Visible light
What is the molecule contained in chloroplast that absorbs some energy of visible light?
chlorophyll
What are the two main types of chlorophyll plants have?
-Chlorophyll A
-Chlorophyll B
What do both types of chlorophyll absorb the most in wavelengths of visible light?
Red light and Blue light
What do both types of chlorophyll absorb the least in wavelengths of visible light?
Green light (gets reflected causing us to see plants as green)
Chloroplast contain two main parts needed for photosynthesis…
-The grana
-The stroma
what is the grana (singular: granum)
stacks of coin-shaped, membrane enclosed compartments called thylakoids
What do thylakoids contain?
They contain chlorophyll, other light absorbing molecules, and protein
What is the stroma?
The fluid that surrounds the grana inside chloroplast
Photosynthesis takes place in two stages…
-Light-dependent reactions
-Light-independent reactions
The light-dependent reactions are…
-Capture energy from sunlight
-Takes place within and across the membrane of the thylakoids
-Require water and sunlight
-Chlorophyll absorbs sunlight
-Oxygen is released
-Energy is transferred to molecules that carry energy, such as ATP
The light-independent reactions are…
-Occur in stroma of chloroplast
-Carbon dioxide is needed
-Use energy from light-dependent reactions
-Form sugars -> usually Glucose
-Energy is stored in the sugars
-Aka the Calvin cycle
