OCR Gateway B1

afarrington
Flashcards by afarrington, updated more than 1 year ago
afarrington
Created by afarrington over 5 years ago
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Flashcards on OCR Gateway B1 , created by afarrington on 03/11/2015.

Resource summary

Question Answer
What is meant by fitness? The ability to do a physical activity
What affect does carbon monoxide have on the body? It combines with haemoglobin and reduces the amount of oxygen transport by the red blood cells
One problem caused by excessive salt intake High blood pressure
Regular exercise and a balanced diet can bring about: A reduction in blood pressure
Nicotine is the additive substance in tobacco. It can cause: Increased heart rate
The risk of heart disease is increased if : -The coronary arteries are widened -The coronary arteries are narrowed -Blood pressure is low The coronary arteries are narrowed
Why are proteins important in a balanced diet? They are needed for growth and repair
Iron is important in a diet because: It is needed for haemoglobin found in the red blood cells
Which statement about carbohydrates is correct? - They are made up of simple sugars - They are made up of amino acids - They are made up of fatty acids and glycerol They are made up of simple sugars
What happens to carbohydrates in the liver? They are stored as glycogen
What is kwashiorkor caused by? Protein deficiency
What BMI of a person is considered to be obese? 30
What is the EAR for a 50kg person? 0.6 x 50 = 30
What is the BMI of a an 80kg person who is 2m tall? BMI = Weight (kg) divided by Height (M)2 BMI = 80./ 2 X 2 = 80/4=20
Proteins from animals are called 'first class' proteins because: they contain all the essential amino acids
What is a pathogen? A disease causing microorganism
What causes red - green colour deficiency? An inherited disorder
Hydrochloric acid is in the stomach: Kills pathogens
What is the vector in the spread of malaria? The mosquito
Which of the following is a function of antibodies? Lock onto antigens
What statement about immunity is correct? - Passive immunity involves the body making its own antibodies - Passive immunity involves receiving antibodies - Active immunity involves receiving antibodies Passive immunity involves receiving antibodies
Which statement about tumours is correct? - Benign tumours grow slowly and are usually harmless - Benign tumours grow quickly and are usually harmless - Benign tumours grow slowly and may spread around the body Benign tumours grow slowly and are usually harmless
What can a vaccination involve? Injecting a harmless form of the pathogen to stimulate immunity.
It is important to use antibiotics carefully because: It reduces the spread of resistant strains
What is the feature of a double blind trial? Doctors and patients don't know is the drug is real
What is the eye an example of? A sense organ
Which type of neurone transmits a signal from a sense organ to the central nervous system? Sensory
Which type of neurone transmits a signal from the central nervous system to an effector such as a muscle? Motor
What is a synapse? The long fibre in a nerve cell
Which part of the eye controls the amount of light entering? Cornea
Two parts of the eye that are involved in focussing are: - The lens and cornea - The lens and retina - The cornea and optic nerve The lens and retina
Animals with eyes on the side of their head have: - Good depth perception and a good field of view - Good depth perception and a poor field of view - Poor depth perception and a good field of view Poor depth perception and a good field of view
Long sight is a vision defect. People with long sight: can see distant objects clearly, but not near objects because the lens focuses the image behind the retina
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