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B7 Revision ­ The key points

Important equations to remember:

Aerobic Respiration Glucose + Oxygen = Water + Energy (High)

Anaerobic Respiration Glucose = Lactic Acid + Energy (Low)

Photosynthesis Carbon Dioxide + Water = Oxygen + Glucose

Photosynthesis (symbol) 6CO2 + 6H2O = 6O2 + C6H12O6

An important formula…

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There are 4 blood types and can be explained in the following table:

Antibodies None (Clots) (Clots) (Clots)
Anti-B Anti-A Anti-A, B,
and AB
Antigens AB A B None
Receives AB, A, B, O A, O Blood B, O Blood O Blood

Blood contains…

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(usually) work in antagonistic pairs in which one pulls (contracts) while
the other relaxes.

Biceps are a perfect example:


To check whether a treatment is working, they will ask a number of
questions, as follow: Do they have any side-effects from the current
scheme? Are they on any other…

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current medication/treatment is working, rather than worsening the

Types of common injuries that you should know:

Sprain ­ Damage to a ligament

Dislocation ­ Bones being pulled out of sockets

Torn ligaments ­ A ligament is ripped literally

Torn tendons ­ a muscle contracts in one way but pulls…

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each trophic level. You will be expected to know how to work out the
percentage efficiency, which is covered on page 1. You will also be
expected to know how to produce a pyramid of biomass from a food
chain, as well as a chain from a vast food chain.…

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Remember that food chains tend to only be 4 trophic levels long
because energy is lost. You will need to know how: excretion,
movement, respiration, uneaten parts, and heat energy.


Soil is made up of inorganic material (rocks and things that aren't alive
­ NOT DEAD STUFF!!!!!), water, air,…

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are immune to malaria as the malaria parasites will move on from the
person because they cannot grow. Natural selection has caused
sickle-cell anaemia to become more frequent in malaria-plagued areas
because it enables the chance of survival to become increased.

In addition to this, you should know how to…

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The final part you need to know (except from the ideas in context

Photosynthesis is affected by the amount of light, carbon dioxide, and
temperature. It takes place only during the day because of the
sunlight, but plants still respire during the night.



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