What is the Metabolic Rate?
Name one factor that can affect it.

How much more energy is stored in a gram of fat when compared to a gram of carbohydrate or protein?

What happens if a person has a high level of cholestrol in their blood?

Which type of cholestrol is 'good' and why?
Which type of cholestrol is 'bad' and why?

Define the following terms:
Pathogen
Toxin
Epidemic
Pandemic

What did Ignaz Semmelweis do to reduce the death rate of pregnant women?

What is phagocytosis?

What are antibodies?

Describe one method to test for the best antibiotic.

How might bacteria become resistant to antibiotics?

Why do we need to avoid using antibiotics unnecessarily?

What is Vaccination?

How do new infectious diseases appear?

Describe how cultures are grown.

What type of cell secretes hormones?

What is used in a nervous response?

What do neurones do?

Describe what happens in the nervous system when you stand on a pin.

How does the body lose:
1. Water
2. Salt
3. Heat

Describe the 4 stages of the menstrual cycle.

Describe IVF

Define these terms:
1. Auxin
2. Phototropism
3. Gravitropism

What happens if a drug addict stops using a drug?

Name three stages of a drug trial.

What are statins?

Why are professional sports-people banded from using certain drugs?

Name 3 ways in which organisms compete.

Why do many organisms adapt to live in extreme environments?

Name three adaptations associated with animals that live in cold environments.

What is the term for an organism that lives in extreme environments?

Name a living factor that has changed the environment of Britain recently.

What could happen if all the bees dissapeared?

How can organisms be used to measure pollution in Britain?

Why do plants only capture a small amount of the light hitting Earth?

How do we calculate te efficiency of energy transfer?

Why is a pyramid of biomass always drawn with a pyramidal shape?

Why are energy losses from mammals and birds higher than snakes, frogs and fish?

At which temperature do bacteria grow fastest?

Name three ways of treatng food to reduce decay?

What is the equation for photosynthesis?
What is the equation for respiration?

What are chromosomes?

What is variation affected by?

What is a term for the cell produced by fertilisation?

What is internal fertilisation?

Describe adult-cell-cloning

How have bacteria been Genectically Enigneered to produce insulin?

What is GM?

What is Charles Darwin's theory known as?

How does natural selection work?

What is an evolutionary tree?