PHOTOSYNTHESIS Flashcards
Define the term Autotroph
- self feeding
- organisms which produce their own food from organic molecules
- SG: plants and algae
Define the term heterotrophs
- other source feeding
- organisms which derive energy from other living organisms
What is glucose got to to with ATP?
Glucose is a store of energy, it can be universally respired to release ATP
How much energy is released when phosphate bonds are broken .?
30.5
What is the definition of photosynthesis
Photosynthesis is the process by which energy I’m the for, of light from the sun is used to build complex organic molecules EG: glucose
Structure of a chloroplasts (6)
- granum
- lamella
- stroma
- thylakoid
- outer membrane
- inner membrane
What does the membrane within the chloroplast do which helps with effective photosynthesis ?
The membranes within the chloroplasts provide a large surface area to maximise the absorption of light essential in the first step of photosynthesis
What are thylakoids
The membranes form flattened sacs called thylakoids and they are stacked to form granum
What joins the grana in a chloroplast
Membranous channels called lamella
Where is cholorophyll found in the chloroplast
Chlorophyll is imbedded within the thylakoid
Where is cholorophyll found in the chloroplast
Chlorophyll is imbedded within the thylakoid
What is chromatography used for?
To separate the different pigments in a plant extract
How are different solubilities of pigments shown in chromatography?
Moving up at a different rate
What is the gel that the pigments move through in chromatography?
Silica gel
How can the retention value (Rf value) be calculated for the pigments ?
Rf= distance travelled by the component/ distance travelled by the solvent
