What is fitness?
Being free from illness or disease
The ability to carry out physical activity
Being physically attractive
What causes heart disease?
A broken heart due to love
Restricted blood flow to the heart muscle
It's hereditary
Pathogens in the heart
What is the risk of getting heart disease increased by?
A high level of saturated fat in the diet
A build up of cholesterol in the arteries
Eating high levels of salt
Smoking
Lifting weights
Drinking too much water
What can you use to determine whether a person is over/underweight?
EAR (0.6 x body mass in kg)
BMI (mass in kg/ height in m squared)
What is a first-class protein?
Proteins from plants
Proteins that are genetically engineered to contain extra amino acids
Proteins from animal which contain all of the essential amino acids that can't be made by the human body
What is Plasmodium?
A protozoan which feeds on red blood cells
A type of insect found in the rain forest
A liquid found inside bones which thins the blood
A parasite is an organism that feeds on another living organism, causing it harm - true or false?
Mosquitoes are protozoans - true or false?
What is a pathogen?
A disease-causing organism
An organism produced by white blood cells which lock onto the surface of antigens
Part of a plant
What do antibiotics do?
Destroy pathogens
Slow down the pathogens development
Treat viruses
A placebo is a type of antiviral drug
What is a blind trial?
A drug trial in which the patient is blind folded
A drug trial in which the patient doesn't know whether they're receiving a real drug or a placebo
A drug trial in which neither the patient nor the doctor know whether they're receiving a drug or a pacebo
A trial with only placebos
What has excessive use of antibiotics resulted in?
Resistant forms of the bacteria becoming more common than non-resistant forms
The drugs tasting nicer
Doctors becoming addicted to them
Passive immunisation is long term
What does the cornea do?
contracts and relaxes to control how much light enters the eye
refracts light as it enters the eye
controls hormone release in the feet
sends nerve impulses from the fingers to the brain
What type of lens should be prescribed to someone who is short sighted?
concave
convex
complex
cornea
The gap between neurones is called a...
relay
nerve
synapse
iris
What is the reflex arc?
stimulus - receptor - sensory neurone - central nervous system - motor neurone - effector - response
receptor - response - sensory neurone - relay neurone - motor neurone - effector
stimulus - motor neurone - central nervous system - relay neurone - effector - response
receptor - sensory neurone - relay neurone - motor neurone - central nervous system - effector
Hypothermia is...
A very low temperature
A very high temperature
Maintaining a constant internal environment
Very low blood sugar levels
The hypothalamus...
Monitors body temperature
Is damaged by too much alcohol consumption
Is in the brain
Is in the chest
Controls insulin levels
Vasodilation is...
The widening of blood vessels
The narrowing of blood vessels
A reaction to being too hot
A way of controlling plant hormones
Triggered by the nervous and hormonal systems
A reaction to drug overdose
Type 1 diabetes is caused by the pancreas producing too much insulin
Type 2 diabetes can be controlled by diet
What does insulin do?
Converts excess glycogen to glucose for use
Converts excess glucose to glycogen to be stored in the liver
Makes food sweeter
Causes Type 2 diabetes
What are the effects of smoking?
cigarette smoke contains chemicals which stop the cilia moving
Increased risk of lung cancer
Causes diabetes
You will get fined by the police
People will stop being friends with you
Dust particulates irritate the epithelial lining
Dust particulates irritate the small intestine lining
Phototropism is a plants response to gravity
What do auxins do?
Increase the height and weight of a plant
Elongate cells on the shaded side of a plant to tilt it towards the light
Feed on plants
Plant roots are positively geotropic
What are the uses of plant hormones?
Selective weed killers
To increase root growth of plant cuttings
To make a plant sexually active
To delay or accelerate fruit ripening
To reverse the ageing process of plants, making them younger
To control seed dormancy
To replace farmers
