4 Flashcards
What type of reaction is photosynthesis?
An endothermic reaction in which energy is transferred from the environment to the chloroplasts by light
What are the 4 things that effect rate of photosynthesis?
Temperature
Light intensity
Carbon dioxide concentration
Amount of chlorophyll
How are limits factors of photosynthesis used to save money?
They can be used to enhance conditions in greenhouses to back. The maximum rate of photosynthesis to make a profit and it is important in economics
What are the 5 uses of glucose in photosynthesis?
Respiration
Converted to starch for storage
Used to produce fat or oil for storage
Used to produce cellulose which strengthens cell wall
Used to produce amino acid for protein synthesis
How does the inverse square law apply to photosynthesis?
The inverse square law states that the intensity of light is inversely proportionate to the square of the distance from the light source
What is changes in require practical 6 with photosynthesis?
The light intensity
What can be done to make required practical 6 more accurate?
Let the pondweed acclimatise
Repeat the experiment and find a mean
What is the photosynthesis required practical - no 6?
Uses pondweed in water to find the effect of light intensity on the rate of photosynthesis
How do organisms use their energy?
Build larger molecules from smaller molecules
Maintain boy temperature
Muscular contraction for movement
What is metabolism?
All the chemical processes that occur within a living organism in order to maintain life
What is the word equation for anaerobic respiration in humans
Glucose -> lactic acid
Why do we do aerobic respiration more than anaerobic respiration?
Anaerobic respiration doesn’t produce as much energy because the oxidisation of glucose is incomplete
What is the word equation for anaerobic respiration in plant and yeast cells?
Glucose -> ethanol and carbon dioxide
What is another name for anaerobic respiration in yeast cells
Fermentation
What three things happen during excerices and why?
Heart rate increases
Breathing rate increases
Breath volume increases
To supply the muscles with more oxygenated blood
