Chapter 4 - Animal Tissue, Organs and Systems Flashcards

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1
Q

What is insoluble?

A

Can not dissolve

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2
Q

What is soluble?

A

Can dissolve

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3
Q

What is an Enzyme?

A

A biological molecule that speeds up a chemical reaction.

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4
Q

What is a Sphincter?

A

A ring of muscle that can open or close a tube

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5
Q

What is a Pathogen?

A

A disease-causing microorganism

E.g a bacterium or fungus

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6
Q

What is bile and where is it stored in the digestive system?

A

A green coloured liquid produced by your liver, stored in the gall bladder.

Released into the small intestine to help break down fats.

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7
Q

What is Lipids?

A

Fats or oils, which are insoluble in water.

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8
Q

What is defecation?

A

Removing solid waste from the body

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9
Q

What are substrates?

A

The molecules on which an enzyme acts.

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10
Q

What is the product?

A

The substances produced by an enzyme reaction.

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11
Q

What is the lock and key hypothesis for enzymes?

A

A model that explains the action of enzymes.

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12
Q

What is an active site?

A

The region of an enzyme that binds to its substrate.

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13
Q

What is the meaning of denatured?

A

A permanent change to an enzyme as a result of extremes of pH or high temperature, which stop it working.

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14
Q

What is an artery?

A

The blood vessel that carry’s blood away from the heart.

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15
Q

What is a vein?

A

A blood vessel that carries blood towards the heart.

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16
Q

What are capillaries (capillary) ?

A

Blood vessel that joins arteries and veins.

Substances pass through capillary walls to and from the surrounding cells.

17
Q

What is an atrium? (Plural atria)

A

The upper chamber of the heart, surrounded by a this wall of muscle.

18
Q

What are ventricles?

A

The lower chamber of the heart, surrounded by a thicker wall of muscle.

19
Q

What is deoxygenated?

A

Blood without oxygen.

20
Q

What is haemoglobin?

A

The protein in red blood cells that temporarily bind with oxygen to carry it around your body

21
Q

What is a oxyhaemoglobin?

A

The name given to a substance formed when haemoglobin in your red blood cells temporarily bind oxygen

22
Q

What is phagocyte?

A

A type of white blood cell that engulfs the pathogen.

23
Q

What is lymphocytes?

A

A type of white blood cell that produce antibodies to help plant pathogens together to make them easier to destroy

24
Q

What are antibodies?

A

A protein produced by lymphocytes that recognises pathogens and helps to clump them together

25
Q

What are platelets?

A

Small structures in your blood that fuse together to form a scab. They do this by releasing chemicals called clotting factors. they help blood clots.

26
Q

What are the components of blood?

A

Red blood cells, white blood cells, platelets and blood plasma.

27
Q

What are Connery arteries?

A

Arteries that supply the heart muscle with oxygenated blood.

28
Q

What is atherosclerosis?

A

A medical condition resulting from an unhealthy lifestyle that reduces the flexibility of our arteries.

29
Q

What is cholesterol?

A

An important biological molecule for cell membranes but leads to atherosclerosis if found in high levels in the blood.

30
Q

What is a heart bypass?

A

A medical procedure in which is section of less important artery is moved to allow blood to flow around the blockage in a more important one.

31
Q

What is a stent?

A

A small medical device made from mesh to keep arteries open.

32
Q

What is the meaning of being healthy?

A

Healthy is defined as a state of physical and mental well-being.
Having a well balanced diet, regular exercise, reducing stress and seeking medical help for mental or physical difficulties.

33
Q

What is a milignant tumour?

A

A cancerous tumour that has spread to other parts of the body

34
Q

What is a benign tumour?

A

A non-cancerous tumour that does not spread.

35
Q

What is risk factor?

A

Any aspect of your lifestyle or substance in your body increases the rest of the disease developing.

36
Q

What is causation?

A

The act of making something happen

37
Q

What is correlation?

A

When an action and outcome are linked but the actions not necessarily cause the outcome.

38
Q

What is carcinogen?

A

A cancer-causing substance.