5.2.1 Photosynthesis Flashcards
What is the overall chemical reacton equation for photosynthesis?
6CO2 + 6H2O -> C6H12O6 + 6O2
What is the relationship between photosynthesis and respiration?
they are the reverse of eachother
What is the importance of photosynthesis for consumers and producers
it traps the energy from the sun to be transferred through the food chain
consumers (animals) cannot make their own food so they obtain glucose by eating plants
Why does photosynthesis require energy from the sun and store energy?
(Use the concept of bond energy)
-As CO2 and H2O in photosynthesis require lots of energy to break but little energy given out when glucose forms.
-Energy needed to build organic molecules from small inorganic molcules gained from the sun
-bonds need energy to be broken + release energy when bonds are formed
-bonds in small inorganic molecules are strong (H2O, CO2)
++ lots of energy to break
++ lots of energy out when they form
- bonds in larger organic molecules are weaker (glucose, amino a)
– little energy to break
– less energy out when they form
Why does respiration release energy that can be used to make ATP?
- in repspiration large organic molecules broken down into small inorganic molecules
The total energy needed to break all the bonds in a large organic molecule (glucose) is less than all the energy released when smaller organic product bonds are made
– the excess energy released by bond formation is used to make ATP
Draw, label and annotate a diagram of a chloroplast done on flashcard
done on flashcard
What are the two main stages of photosynthesis?
- light dependent stage
-light independent stage
Where in the chloroplast does the light dependent stage occur?
Thylakoid membranes
Where in the chloroplast does the light independent stage occur?
stroma
Draw a diagram to outline the processes of photosynthesis as two linked main stages (light dependant + light independent)
DO ON FLASHCARD
DO ON FLASHCARD
Define photosynthetic pigment
a pigment that absorbs light energy
