B4 - Bioenergetics Flashcards
What is the word equation for photosynthesis?
Carbon dioxide + water → oxygen + glucose
What is the balanced symbol equation for photosynthesis?
6CO2 + 6H2O → C6H12O6 + 6O2
What are the reactants of photosynthesis?
What are the products?
Reactants:
Water and carbon dioxide
Products:
Oxygen and glucose
Where in plants does photosynthesis take place? Why?
In all the green parts of the plant.
Because chlorophyll, which is used for light absorption, in the chloroplasts produce a green colour.
Why are leaves adapted to be broad and flat?
To give a large surface area which help to absorb lots of sunlight.
Why are leaves adapted to have lots of chloroplasts?
Chloroplasts have chlorophyll to absorb lots of sunlight.
What is a limiting factor?
Any environmental variable that may limit the rate of photosynthesis if it is in short supply.
In the limiting factors practical, what is the independent variable?
Light intensity - the distance between the lamp and pondweed
In the limiting factors practical, what is the dependant variable?
Rate of photosynthesis- the number of bubbles produced
How and why is glucose used during respiration?
The glucose is broken down using oxygen to provide energy for the cells.
