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Stem cells

Unspecialised cells that can divide repeatedly and develop into different types of specialised cell.

Glossary

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Hormones

A chemical substance produced in the body.

Glossary

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Diploid

Cells with two sets of chromosomes, one from the male parent and one from the female parent.

Glossary

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Chloroplast

The organelle within a cell that carries out photosynthesis.

Glossary

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Osteocyte

A mature, star-shaped bone cell.

Glossary

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Meiosis

A method of cell division and an important step in sexual reproduction.

Glossary

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Haemoglobin

A protein found in red blood cells.

Glossary

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Sperm

Male gametes.

Glossary

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Prokaryote

Living organisms whose cells lack a nucleus.

Glossary

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Respiration

The process by which an organism supplies its cells and tissues with oxygen and returns carbon dioxide.

Glossary

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Apoptosis

Programmed cell death.

Glossary

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Pollen

Tiny particles produced by male plants.

Glossary

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Lymphocyte

A type of white blood cell.

Glossary

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Nucleus (biology)

The membrane-bound structure inside eukaryotic cells.

Glossary

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Eukaryote

An organism whose cells contain substructures called organelles.

Glossary

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Plasma (biology)

The liquid component of blood.

Glossary

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Ribosomes

The structures in cells that synthesize proteins.

Glossary

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Tissue

A collection of cells in an organism.

Glossary

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Phagocyte

A white blood cell cell that helps protect the body.

Glossary

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Aerobic respiration

Respiration that uses oxygen.

Glossary

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