2243353
Description
Flashcards by afarrington, updated more than 1 year ago
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Created by afarrington
almost 10 years ago
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| 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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