2.4 Photosynthesis Flashcards
What is photosynthesis?
process of capturing sunlight and converting it into usable energy sources ATP and NADPH
Where does photosynthesis occur?
chloroplasts
What are chloroplasts?
double membrane enclosed organelles that house the photosynthetic pigment chlorophyll
What types of cells contain chloroplasts?
plants and algae
Do animal cells contain chloroplasts?
no
What are the two steps of photosynthesis?
light and dark reactions
What is the light reaction of photosynthesis known as?
photophosphorylation
What is a general overview of photophosphorylation?
converting light energy into chemical energy to be used by the cell in forms of ATP and NADPH
Where do the photophosphorylation reactions occur?
in membrane of chloroplasts
What is the main function of the light reaction of photosynthesis?
generate a proton gradient concentration to produce ATP
What is the dark reactions of photosynthesis known as?
Calvin cycle
What is the general overview of the Calvin cycle?
use the ATP and NADPH generated in light reaction to convert carbon dioxide and water into organic carbon compounds
What is carbon fixation?
the process of producing organic carbon compounds and useful cabohydrates
Is light required for the Calvin cycle?
no
What does the Calvin cycle produce?
glyceraldehyde 3-phosphate
What will the G3P produced by the dark reactions eventually turn into?
glucose
What happens to the NADPH and ATP made during the light reaction during the dark reactions?
turned back into NAPD and ADP which are reused in the next light reaction
How many turns or cycles does the Calvin cycle require to generate one molecule of glucose?
six turns
What are the reactants in the Calvin cycle chemical equation?
6 CO2
18 ATP
12 NADPH
12 H20
What are the products in the Calvin cycle chemical equation?
one glucose
18 ADP
12 NADP
