Biology (Triple Award): All Topics

Nutrition, respiration, excretion, response to surroundings (sensitivity), movement, control of internal conditions, reproduction, and growth and development.

Movement, Respiration, Sensitivity, Control of internal conditions, Growth and development, Reproduction, Excretion, Nutrition.

They identify the main life processes shared by organisms despite differences in size, structure and habitat.

Some non-living things can move or increase in size; evidence should consider the range of life processes together.

Movement and energy use alone do not demonstrate the shared biological processes, such as cellular respiration, excretion of metabolic waste, reproduction and development.

Life processes can occur slowly or intermittently; individuals may also be unable to reproduce, although reproduction characterises living organisms as a group.

Obtaining or making nutrients that supply energy and materials for growth, repair and other life processes.

They need substances that provide energy through respiration and raw materials to grow, develop and repair tissues.

They make glucose by photosynthesis using light energy, carbon dioxide and water.

They feed on plants, other animals or their products, then obtain usable nutrients from the food.

A green plant makes food by photosynthesis; an animal obtains food by feeding on other organisms or their products.

It needs matter to build new cells and tissues; released energy alone cannot supply the materials for growth.

Nutrition need not involve eating: a green plant makes its own organic food using light, water and carbon dioxide.

Nutrition through photosynthesis is limited because water is a raw material needed to make glucose.

Nutrition is inadequate, so growth and development may be restricted even though food is being consumed.

It uses photosynthesis to make sugars from carbon dioxide and water, then uses these substances to build new tissues.

The chemical process in living cells that releases energy from food substances for life processes.

They need energy for processes such as growth, movement, repair and maintaining internal conditions.

Yes. Plant cells respire to release usable energy, just as animal cells do.

Respiration is a chemical process releasing energy in cells; breathing is the movement of air into and out of lungs.

Its cells still require energy, even when lack of light prevents photosynthesis.

Photosynthesis makes food using light energy; respiration releases energy from food for cell activities.

Energy is still needed to maintain essential internal processes, repair cells and keep the organism alive.

Respiration is occurring and some of the released energy is transferred to the surroundings as heat.

It can obtain food from stored reserves and respire to release energy required for early growth.

Plants respire continuously to release energy; photosynthesis also occurs when suitable light is available, so both can occur together.

No. Respiration supports ongoing cellular activities even when no outward movement is visible.

The removal of metabolic waste products and substances that would be harmful if they accumulated.

Waste substances produced by chemical reactions taking place in living cells.

Carbon dioxide is a waste product of aerobic respiration.