Exchange substances official content key terms

exchange

exchange is a curriculum-aligned term linked to the learning objective: Explain why size affects exchange requirements..

Explain why size affects exchange requirements function

The function of Explain why size affects exchange requirements is understood by linking the named structure or process to movement of substances across surfaces or through transport systems.

surface area

surface area is a curriculum-aligned term linked to the learning objective: Calculate and interpret surface area to volume ratio..

Surface area to volume ratio

Surface area to volume ratio means the specific biological idea in this objective: Calculate and interpret surface area to volume ratio. It must be explained with a mechanism, relevant structure and consequence for exchange or mass transport.

exchange

exchange is a curriculum-aligned term linked to the learning objective: Explain adaptations of specialised exchange surfaces..

Specialised exchange surfaces evidence

Evidence for specialised exchange surfaces comes from observations, data or diagrams that show how structure, gradients or transport pathways affect exchange efficiency.

relate

relate is a curriculum-aligned term linked to the learning objective: Relate multicellularity to mass transport systems..

Mass transport in multicellular organisms function

The function of mass transport in multicellular organisms is understood by linking the named structure or process to movement of substances across surfaces or through transport systems.

gas exchange

gas exchange is a curriculum-aligned term linked to the learning objective: Explain gas exchange adaptations in insects..

Insect tracheal gas exchange

Insect tracheal gas exchange means the specific biological idea in this objective: Explain gas exchange adaptations in insects. It must be explained with a mechanism, relevant structure and consequence for exchange or mass transport.

gas exchange

gas exchange is a curriculum-aligned term linked to the learning objective: Explain counter-current gas exchange in fish gills..

Counter-current gas exchange in fish gills evidence

Evidence for counter-current gas exchange in fish gills comes from observations, data or diagrams that show how structure, gradients or transport pathways affect exchange efficiency.

gas exchange

gas exchange is a curriculum-aligned term linked to the learning objective: Explain stomatal and leaf adaptations for gas exchange in plants..

Leaf stomata and gas exchange

Leaf stomata and gas exchange means the specific biological idea in this objective: Explain stomatal and leaf adaptations for gas exchange in plants. It must be explained with a mechanism, relevant structure and consequence for exchange or mass transport.

gas exchange

gas exchange is a curriculum-aligned term linked to the learning objective: Explain mammalian gas exchange through alveoli and ventilation..

Alveoli and ventilation evidence

Evidence for alveoli and ventilation comes from observations, data or diagrams that show how structure, gradients or transport pathways affect exchange efficiency.

gas exchange

gas exchange is a curriculum-aligned term linked to the learning objective: Interpret gas exchange data and structural diagrams..

Gas exchange data interpretation

Gas exchange data interpretation means the specific biological idea in this objective: Interpret gas exchange data and structural diagrams. It must be explained with a mechanism, relevant structure and consequence for exchange or mass transport.

digestion

digestion is a curriculum-aligned term linked to the learning objective: Explain digestion of carbohydrates, lipids and proteins..

Digestion and hydrolysis evidence

Evidence for digestion and hydrolysis comes from observations, data or diagrams that show how structure, gradients or transport pathways affect exchange efficiency.

hydrolysis

hydrolysis is a curriculum-aligned term linked to the learning objective: Describe roles of digestive enzymes in hydrolysis..

Digestive enzyme hydrolysis function

The function of digestive enzyme hydrolysis is understood by linking the named structure or process to movement of substances across surfaces or through transport systems.

absorption

absorption is a curriculum-aligned term linked to the learning objective: Relate ileum and villus structure to absorption..

Ileum and villus absorption function

The function of ileum and villus absorption is understood by linking the named structure or process to movement of substances across surfaces or through transport systems.

absorption

absorption is a curriculum-aligned term linked to the learning objective: Explain glucose and amino acid co-transport in absorption..

Glucose and amino acid co-transport

Glucose and amino acid co-transport means the specific biological idea in this objective: Explain glucose and amino acid co-transport in absorption. It must be explained with a mechanism, relevant structure and consequence for exchange or mass transport.

haemoglobin

haemoglobin is a curriculum-aligned term linked to the learning objective: Explain haemoglobin structure and oxygen transport..

Haemoglobin oxygen transport evidence

Evidence for haemoglobin oxygen transport comes from observations, data or diagrams that show how structure, gradients or transport pathways affect exchange efficiency.

oxygen dissociation curve

oxygen dissociation curve is a curriculum-aligned term linked to the learning objective: Interpret oxygen dissociation curves and the Bohr effect..

Oxygen dissociation curves and the Bohr effect function

The function of oxygen dissociation curves and the Bohr effect is understood by linking the named structure or process to movement of substances across surfaces or through transport systems.

heart

heart is a curriculum-aligned term linked to the learning objective: Describe mammalian circulation, heart structure and the cardiac cycle..

Mammalian circulation and cardiac cycle

Mammalian circulation and cardiac cycle means the specific biological idea in this objective: Describe mammalian circulation, heart structure and the cardiac cycle. It must be explained with a mechanism, relevant structure and consequence for exchange or mass transport.

blood vessel

blood vessel is a curriculum-aligned term linked to the learning objective: Relate blood vessel structure to function..

Blood vessel structure and function

Blood vessel structure and function means the specific biological idea in this objective: Relate blood vessel structure to function. It must be explained with a mechanism, relevant structure and consequence for exchange or mass transport.

Practical evaluation variable

A variable recorded in Required Practical 5, such as vessel diameter or tissue thickness, must be evaluated against method limits, uncertainty, reliability and controlled variables before drawing a valid conclusion.

Controlled variable evaluation method

In the Required Practical 5 method, a controlled variable such as specimen size, tissue region, stain time or magnification is kept constant so students can evaluate whether the dissection evidence is valid and reliable.

xylem

xylem is a curriculum-aligned term linked to the learning objective: Describe xylem transport of water and mineral ions..

Xylem water transport function

The function of xylem water transport is understood by linking the named structure or process to movement of substances across surfaces or through transport systems.

transpiration

transpiration is a curriculum-aligned term linked to the learning objective: Explain cohesion-tension theory in transpiration..

Cohesion-tension in transpiration function

The function of cohesion-tension in transpiration is understood by linking the named structure or process to movement of substances across surfaces or through transport systems.

phloem

phloem is a curriculum-aligned term linked to the learning objective: Describe phloem transport of assimilates by translocation..

Phloem translocation

Phloem translocation means the specific biological idea in this objective: Describe phloem transport of assimilates by translocation. It must be explained with a mechanism, relevant structure and consequence for exchange or mass transport.

mass-flow

mass-flow is a curriculum-aligned term linked to the learning objective: Explain mass-flow principles in plant transport..

Plant mass-flow transport evidence

Evidence for plant mass-flow transport comes from observations, data or diagrams that show how structure, gradients or transport pathways affect exchange efficiency.

interpret

interpret is a curriculum-aligned term linked to the learning objective: Interpret evidence for plant transport mechanisms..

Plant transport evidence function

The function of plant transport evidence is understood by linking the named structure or process to movement of substances across surfaces or through transport systems.