Biology 1

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What is blood pressure measured in?
mmHg - millimeters of Mercury
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What is the difference between fitness and health?
Fitness - ability to do physical activity. Health - being free from diseases.
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How does smoking increase blood pressure?
Carbon monoxide causes the blood to carry less oxygen because it combines with haemoglobin OR Nicotine increases heart rate
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How is the risk of getting heart disease increased?
High levels of Salt OR High levels of Saturated Fat
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Where are carbohydrates stored?
In the liver
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Where are fats stored?
Under the skin and around organs
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What is the difference between a first class and a second class protein?
A first class protein contains all essential amino acids that cannot be made by the body; a second class does not.
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BMI = ...
mass in kg/(height in m)^2
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Malaria is caused by a protozoan called...
Plasmodium.
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What is the difference between benign and malignant tumour cells?
Benign cells divide slowly and are harmless, malignant display uncontrolled growth and may spread.
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Which blood cell is used to produce antibodies?
White Blood Cells.
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What happens during vaccination?
A harmless pathogen is injected. The antigens trigger a response by the white blood cells, producing the correct antibodies. Memory cells remain in the body.
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True/False - excessive use of antibodies has resulted in resistant forms of bacteria.
True - for example, resistant MRSA had thrived.
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Which part of the eye contains light receptors?
The retina.
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True/false - humans have binocular vision.
True - this helps judge distance by comparing images from each eye.
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If someone is shortsighted, which lens is used to correct their vision?
A concave lens.
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Nerve cells are called...
Neurones.
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True/false - the gap between neurones is called a response.
False - it is called a synapse.
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Name two types of drugs.
ANY TWO FROM: Depressants, Painkillers, Stimulants, Hallucinogens, Performance Enhancers.
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Cirrhosis of the liver is...
When liver breaks down toxic chemicals.
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True/false - homeostasis involves balancing bodily inputs and outputs.
True.
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What is the optimum temperaure for enzymes?
37 degrees celsius.
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Which gland monitors blood temperature?
The hypothalamus gland.
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Which hormone controls blood sugar levels?
Insulin.
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Phototropism is...
A plant's growth response to light.
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Auxins are made in which parts of the plant?
The root and shoot tip.
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Name ONE commercial use of plant hormones.
ANY ONE FROM: Selective Weedkillers, Rooting Powder, Dormancy Control, Fruit Ripening Control.
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True/false - dominant and recessive characteristics depend on the chromosones.
False - they depend on alleles, different versions of the same gene.
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What is the chance of someone having two X chromosones?
1/2.
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A monohybrid cross involves...
Only one pair of characteristics controlled by a single gene; one allele being dominant and one being recessive.
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Other cards in this set

Card 2

Front

What is the difference between fitness and health?

Back

Fitness - ability to do physical activity. Health - being free from diseases.

Card 3

Front

How does smoking increase blood pressure?

Back

Preview of the front of card 3

Card 4

Front

How is the risk of getting heart disease increased?

Back

Preview of the front of card 4

Card 5

Front

Where are carbohydrates stored?

Back

Preview of the front of card 5
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