Expert Maths & Science Tutoring

MS1:

- Photosynthesis is the process by which plants use sunlight to convert carbon dioxide and water into glucose and oxygen (2)

MS2:

- Carbon dioxide is needed for photosynthesis (1)

- As carbon dioxide concentration increases, the rate of photosynthesis increases (1)

- Until a plateau is reached when other factors become limiting (1)

MS3:

- Light compensation point is where photosynthesis rate equals respiration rate (1)

- Found at the point where the graph crosses the x-axis (1)

- Below this point, less energy is produced by photosynthesis than is used by respiration (1)

MS4:

- Light intensity (1)

- Carbon dioxide concentration (1)

- Temperature (1)

MS5:

- Temperature increases enzyme activity (1)

- Up to an optimum temperature (1)

- Above the optimum, enzyme denatures and photosynthesis decreases (1)

MS6:

- Rate increases from 3.0 to 4.8 μmol m-2 s-1 (1)

- Percentage increase = (4.8 - 3.0) / 3.0 x 100 = 60% (3)

MS7:

- Limiting factors are environmental factors that prevent a process from occurring at its maximum rate (1)

- Example: limiting carbon dioxide concentration (1)

MS8:

- Farmers can ensure that crops have access to optimal levels of limiting factors (1)

- Example: adding fertilizers to increase carbon dioxide availability (1)

MS9:

- Chlorophyll is essential for photosynthesis (1)

- As chlorophyll concentration increases, photosynthesis rate increases (1)

- Until a plateau is reached when other factors become limiting (1)

MS10:

- Produces oxygen for respiration (1)

- Provides food for producers and therefore all other organisms (1)