Life and Living - Cell Structure, Microscopy, and Body Systems

Flashcards covering cell structure, microscopy techniques, body systems, and associated health issues.

Cells

The smallest structural and functional unit of all living things.

Microscopic

Too small to see with the naked eye.

Macroscopic

Large enough to see with the naked eye.

Unicellular

Organisms that are made up of one cell only

Multicellular

Organisms that are made of more than one cell.

Organelles

The structures within cells

Light microscope

Instrument that uses light to create a magnified image of the object.

Electron microscope

Instrument that uses electrons to create a magnified image of the object.

Tissue

A group of similar cells working together.

Organ

A group of different tissues working together to carry out a specific function.

Malnutrition

Harmful effects of eating too much, too little or the wrong kinds of foods.

Alimentary Canal

A long tube extending from the mouth to the anus.

Associated organs

Organs which assist with digestion but food does not pass through them.

INGESTION

The intake of food by biting, chewing and swallowing

DIGESTION

The mechanical and chemical processes that convert insoluble food into smaller particles

ABSORPTION

Occurs when the soluble nutrients are taken up by the blood stream

EGESTION

Occurs when undigested food material (faeces) are passed out of the body.

Puberty

A stage in life when a boy or girl becomes sexually mature.

Gametes

Specialised cells for the purpose of reproduction.