IB Biology D3.3 Definitions

This page contains our IB Biology definitions for D3.3. By learning each one of these definitions, you will fully cover the content for IB Biology 'Further homeostasis'.

All Topic 3 Sub-topics A3.1: Diversity Of Organisms (HL)A3.1: Further diversity (HL)A3.2: Classification & cladistics B3.1: Gas Exchanges (HL)B3.1: Further gas exchange B3.2: Transport (HL)B3.2: Further transport (HL)B3.3: Muscle & motility C3.1: Body Systems (HL)C3.1: Plant systems C3.2: Defence Against Infectious Disease D3.1: Reproduction (HL)D3.1: Further reproduction D3.2: Monogenic Inheritance (HL)D3.2: Polygenic inheritance D3.3: Homeostasis (HL)D3.3: Further homeostasis

dehydration

Excessive loss of water that raises the internal solute concentration

excretion

The process of removing waste products from the body

hemodialysis

The passing of blood out of a vein into a semi-permeable dialysis membrane tube in dialysis fluid

kidney transplant

The surgical implantation of another individual’s donated kidney. Living donors can donate one kidney or dead donors one kidney to two people

osmoconformer

An organism that does not control its own internal concentration and thus it is the same as the external solute concentration

osmoregulation

An organism's control of its internal solute concentration

osmoregulator

An organism that maintains a constant internal solute concentration, regardless of the external solute concentration

overhydration

Excessive intake of water lowers the internal solute concentration

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