Biology

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What happens to a person who does not eat a balanced diet?
A person who does not eat a balanced diet can become malnourished. Possible side effects include: being very overweight or underweight, deficiency diseases and conditions such as Type 2 diabetes.
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What are the different food groups?
Carbohydrates, fat, protein, mineral ions, vitamins and water?
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What is the metabolic rate?
The metabolic rate is the rate at which all the chemical reactions are carried out in the body. It is effected by how much muscle you have, how much exercise you do and inherited factors.
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What is the name of the micro-organisms that cause disease?
PATHOGENS - include some bacteria and viruses. When a few pathogens INFECT us they can reproduce very quickly and can make us ill.
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What does the immune system do?
The IMMUNE SYSTEM helps to protect the body against pathogens. WHITE BLOOD CELLS are part of the immune systems.
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What is important about antibodies?
The antibodies produced by a white blood cell are SPECIFIC for one particular kind of pathogen. This means they can only destroy that kind of pathogen. They cannot destroy another kind of bacterium or virus.
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What does immunisation mean?
IMMUNISATION means to make someone immune to a disease.
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What are antibiotics?
ANTIBIOTICS are medicines that kill bacterial pathogens inside the body.
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What are the receptor organs and what are their cells sensitive to?
Eye (light), ears (balance and sound), nose (smell), tongue (taste) and skin (touch, pressure, pain, temperature)
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How is water lost from the body? (Last two are the same for ions)
Water is lost from: lungs when we breath, skin in sweat to cool us down and kidneys in URINE.
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Many processes in the body are controlled by chemicals called HORMONES. What is the process hormones follow?
(1) Hormones are SECRETED (released) by a GLAND into the blood (2) Hormones are transported around the body in the blood (3) Hormones cause a response from a TARGET ORGAN
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What does FSH do?
(1) Causes eggs in ovaries to mature (2) Stimulates eggs in ovaries to produce hormones including oestrogen
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What does LH do?
(1) Causes an ovary top release an egg
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What does oestrogen do?
OESTROGEN inhibits (prevents) further production of FSH so no more eggs mature this month.
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What do ORAL CONTRACEPTIVES (birth control) pills do?
They contain hormones that inhibit the release of FSH, which means: no eggs mature so no eggs are ready to be released from an ovary. May contain OESTROGEN and PROGESTERONE.
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Card 2

Front

What are the different food groups?

Back

Carbohydrates, fat, protein, mineral ions, vitamins and water?

Card 3

Front

What is the metabolic rate?

Back

Preview of the front of card 3

Card 4

Front

What is the name of the micro-organisms that cause disease?

Back

Preview of the front of card 4

Card 5

Front

What does the immune system do?

Back

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