Plants use energy from sunlight to convert carbon dioxide and water into glucose and oxygen during photosynthesis.
Which of the following are reactants in photosynthesis?
Glucose and oxygen
Carbon dioxide and water
Chlorophyll and light energy
Which of the following is required to produce amino acids from glucose?
Fatty acids and glycerol
Which of the following absorbs the energy required by photosynthesis?
Which of the following are products in photosynthesis?
What is the name given when the rates of photosynthesis and respiration are equal?
At what temperature is the rate of photosynthesis greatest?
At lower temperatures
At negative temperatures
At higher temperatures
Which parts of the electromagnetic spectrum are absorbed by the chlorophyll molecule?
Red and blue parts of the spectrum
Red and green parts of the spectrum
Blue and green parts of the spectrum
In an investigation on photosynthesis, why did a student add sodium hydrogencarbonate to the water?
To decrease the temperature of the water
To keep the pH of the water constant
As a source of carbon dioxide
What directly observable change occurs when light intensity is increased in an experiment involving pondweed in a test tube?
The rate of photosynthesis increases
The rate of photosynthesis decreases
More bubbles are given off
Which method is usually used to separate a mixture of coloured dyes in solution?