Factors Affecting Photosynthesis Flashcards
What is a Limiting Factor?
A factor which, when in short supply, will reduce the rate of reaction
What is Optimum?
The best or most favourable situation or level
What is Denatured?
When the structure and function of a substance in altered
Which factors affect the rate of photosynthesis?
-Light intensity
-Carbon Dioxide
-Temperature
-Chlorophyll
What does the light intensity provide in photosynthesis?
It provides the energy needed for the endothermic reaction
As light intensity increases, what happens?
The rate of photosynthesis increases
What happens when light is sufficient?
Another factor becomes the limiting factor
As Carbon Dioxide concentration increases, what happens?
The rate of photosynthesis increases
When Carbon Dioxide (CO2) is sufficient, what happens?
Another factor becomes the limiting factor
Why does temperature affect the rate of enzyme-controlled reactions?
-At low temperatures, there are a low number of molecular collisions between enzymes and substrates. At high temperatures, enzymes are denatured.
What is Chlorophyll?
The green pigment in chloroplasts that absorbs the light energy and uses it to carry out photosynthesis
If leaves have increased chlorophyll, what happens?
They will have an increased rate of photosynthesis
What happens when chlorophyll is sufficient?
Another factor becomes the limiting factor.
How can farmers artificially create the ideal conditions for their crops?
Temperature
Light
Water
Carbon Dioxide
Chlorophyll
How can farmers use temperature to artificially create ideal conditions for their crops?
-Keep in a greenhouse
-Heater in warmer
-Ventilation in summer
How can farmers use light to artificially create ideal conditions for their crops?
-Keep in a greenhouse
-Add artificial lighting
-Provide optimum wavelengths
How can farmers use water to artificially create ideal conditions for their crops?
-Irrigation systems
-Added humidity
How can farmers use carbon dioxide? to artificially create ideal conditions for their crops?
-Use a paraffin heater
-Add liquid CO2
How can farmers use temperature to chlorophyll create ideal conditions for their crops?
-Keep in a greenhouse
-Use fertilisers
What is a fertiliser?
Chemicals containing minerals that plants need to build new tissues
Why is magnesium needed for photosynthesis?
It is required for the production of chlorophyll, which is needed for photosynthesis
Why do farmers not run their equipment 100% of the time?
It is expensive and inefficient
Why do farmers need to optimum amount of light, heat and CO2?
To ensure plants have the maximum rate of photosynthesis to grow quickly, whilst costing as little as possible but still making a profit
How can we measure the rate of photosynthesis?
-rate of oxygen output
-rate of carbon dioxide uptake
-rate of carbohydrate production
