Name: 3rd Form - Nutrition
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Releasing chemicals that have been made inside the cell into the fluid outside the cell.

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Secretion

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3rd Form - Nutrition - Details

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1) Chapter 1 View

Questions:

28 questions

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Releasing chemicals that have been made inside the cell into the fluid outside the cell.

Secretion

An enzyme that digests triglycerides into fatty acids and glycerol.

Lipase

A class of digestive enzymes which digest proteins. eg Trypsin and Pepsin

Protease

The enzyme that digests maltose into glucose.

Maltase

The enzyme that digests starch into maltose.

Amylase

A large organic molecule, insoluble in water, but soluble in ethanol. eg triglycerides, olive oil and ear wax.

Lipid

A single unit of sugar such as glucose. Cannot be broken down into an even simpler sugar.

Monosaccharide

An organic molecule, eg starch or glycogen

Carbohydrate

The basic unit of a protein.

Amino Acid

Large organic molecules made of many amino acids, eg found in muscle cells.

Proteins

Type of molecule which contains carbon atoms. (NB there are exceptions such as carbon dioxide).

Organic

Tiny finger-like extensions of the cell membrane on the surface cells of villi.

Microvilli

Finger-like projections of the small intestine wall where absorption of digested food molecules occurs.

Villi

A toxic substance produced in the liver from the breakdown of amino acids not needed in the body.

Urea

The whole passage along which food passes, from mouth to anus.

Alimentary Canal

Waves of muscular contractions that pushes food along the alimentary canal.

Peristalsis

A plant material that is difficult to digest, keeping food in the alimentary canal soft, bulky, aiding peristalsis.

Fibre

Break up large droplets of lipids in an aqueous solution into smaller droplets.

Emulsify

A liquid produced by the liver and stored in the gall bladder, which is highly alkaline and emulsifies lipids.

Bile

When a biological molecule loses it's 3D structure. Can occur via high temperature or change in pH.

Denaturing

The area of an enzyme where the substrate binds and the products are formed.

Active Site

A protein that acts as a biological catalyst.

Enzyme

A substance that increases the rate of a chemical reaction, such as an enzyme.

Catalyst

The enzymatic breakdown of large insoluble molecules into small soluble ones.

Chemical Digestion

The mechanical breakdown of large food pieces. eg chewing and by stomach muscles.

Physical Digestion

The undigested material remains after digestion of food in humans.

Faeces

The removal of undigested food through the anus.

Egestion

The taking of food into the alimentary canal.

Ingestion