Loading…
Loading…
GCSE Biology · key term
A condition that restricts the rate of a process because it is in insufficient supply or at an unsuitable level.
Used by AQA, Edexcel and OCR
Specification 4.4.1.2 · Paper 1
A condition which, when in short supply, prevents the rate of a process from increasing.
Revise: Factors Affecting the Rate of PhotosynthesisIf one of these is inadequate, it can restrict the process. Such a condition is called a limiting factor.
A condition that restricts the rate of a process because it is in insufficient supply or is at an unsuitable level.
Specification 6.3, 6.4, 6.6 · Paper 2
A factor that restricts the rate of a process because it is in short supply or at an unfavourable level.
Revise: Limiting FactorsEven when a plant has everything it needs, that rate cannot increase without limit: one of the conditions may be holding it back. This is a limiting factor. Light intensity, carbon dioxide concentration and temperature can each limit the rate.
A condition that currently restricts the rate of a process, so changing that condition appropriately could increase the rate.
A factor in shortest supply that restricts the rate of a process such as photosynthesis.
Specification B1.2g, B1.4e, B1.4f · Paper 1 (Foundation), Paper 3 (Higher)
A factor in shortest supply that prevents the rate from increasing further.
Revise: Factors Affecting the Rate of Enzyme ReactionsEnzyme concentration has become the limiting factor.
A necessary condition or resource whose level is restricting the rate of a process.
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
A condition which restricts the rate of a process when it is in short supply or otherwise unfavourable.
Revise: Factors Affecting RateA limiting factor is a condition that restricts the rate when it is in short supply or unfavourable. Changing a limiting factor changes the rate; changing a factor that is not currently limiting may have little or no effect.
A factor in shortest supply that restricts the rate of a process.
A condition which restricts the rate of a process because it is in insufficient supply or is unfavourable.
A factor whose shortage restricts the rate of a process, so increasing it can raise the rate until another factor becomes limiting.
Apply the inverse square law to light intensity, not automatically to the rate of photosynthesis. The rate changes in the same way only while light is the limiting factor.
On a graph, a plateau shows that increasing the factor on the horizontal axis no longer increases the rate. Do not name the new limiting factor without further evidence.
State the condition for the relationship: photosynthesis rate is proportional to light intensity only while light is the limiting factor.
Create a free account to read GCSE Biology revision notes for your exam board and track your progress.