Cerrar
What are the five sense organs in the human body?
In what form is information transmitted along nerve cells?
What are the two different kinds of effector in the human body?
What name is given to the connection between two nerve cells?
What are hormones secreted by?
Give one difference between a nervous response and a hormonal response
Describe what happens in day one of the menstrual cycle
Name the two hormones found in the combined oral contraceptive pill
What is phototropism?
Name the plant hormone that controls phototropism
Why are plant growth hormones used to make selective weed killers?
Give two potential side effects associated with IVF
What effect of oestrogen have on the release of FSH?
What hormone causes an egg to mature in an ovary?
On what day of the menstrual cycle is the egg released?
Name two types of communication systems that are part of automatic control systems in the body
Explain why the conditions in your body need to be kept steady.
What are the functions of receptors and effectors?
Why is it important that the human body temperature is kept at around 37 degrees Celsius?
Describe how vasodilation aids heat loss from the body.
Name three things that are removed from the body in urine
Why is it important to eat carbohydrates as part of a balanced diet?
Name a health problem that eating too much salt can cause
Give three possible effects of eating too little.
Does exercising regularly increase or decrease your metabolic rate?
Why is having a high blood cholesterol level a health risk?
Name one thing to look out for when evaluating a claim about a slimming product
The right amount of carbohydrates and vitamins are needed for a healthy, balanced diet. Name one other food group that is needed for a healthy, balanced diet
Some people are said to be malnourished. Define the term malnourished
Explain why the heart's muscle cells need their own blood supply
What is the purpose of valves in veins?
How many cells thick is the walls of a capillary?
Why are normal heart rate measurements given as a range of values?
Why might you undertake a genetic study when investigating the cause of heart disease?
Name two chemicals found in cigarette smoke that can increase the risk of heart disease.
Explain how drinking excessive amounts of alcohol can affect the risk of heart disease
Heart disease is more common in industrialised countries than non-industrialised countries. Explain why.
What is a drug?
Why might a patient be prescribed statins?
Name two illegal recreational drugs.
Name one legal drug to which people may become addicted
Explain why an athlete may choose to take steroids.
Name one disadvantage of steroids in sport
What is a pathogen?
Explain how viruses damage your cells
What are antigens?
What are antibiotics designed to do?
Why are cultures of microorganisms grown at temperatures no higher than 25 degrees in school laboratories?
What is an epidemic?
What is a pandemic?
