Photosynthesis

Question 1

We can monitor the rate of photosynthesis by….

Answer 1

Measuring the amount of oxygen produced

Question 2

How do you test a leaf for starch?

Answer 2

Plant must be kept in darkness for 24-48 hours prior. Place the leaf in boiling water to break down the cell membranes. Place in a tube half full of ethanol. Place the tube into boiling water for 10 minutes. Remove the leaf and wash it. Place the leaf on a white tile covered in iodine. Should turn blue/black

Question 3

Reactants of photosynthesis

Answer 3

Carbon dioxide, water and the energy from the sun

Question 4

Limiting factors of photosynthesis

Answer 4

Temperature
Carbon dioxide intensity
Light intensity

Question 5

How can we use technology to predict the affect of limiting factors

Answer 5

Computer modelling and simulations

Question 6

What chemical absorbs sunlight

Answer 6

Chlorophyll

Question 7

How may the glucose created in photosynthesis be used

Answer 7

In respiration
Converted to starch for storage for storage
Used to make cellulose and proteins

Question 8

What can oxygen and carbon dioxide sensors with data loggers detect and measure

Answer 8

Oxygen produced per min and carbon dioxide produced per min