Science: Oxygen

The process in which oxygen and glucose undergo a complex series of chemical reactions inside cells, releasing energy.

• Diffusion

• Cellular Respiration

• Respiratory system

An organ system that transports needed materials to cells and removes wastes.

• Circulatory System

• Respiratory System

An organ system that enables organisms to exchange gases with their surroundings.

• Respiratory System

• Circulatory System

The process by which molecules move from an area of higher concentration to an area of lower concentration.

• Diffusion

• cellular respiration

Respiratory systems include structures such as:

• Skin

• Gills

• Lungs

• All are correct

Animals that use their outer body coverings or gills as respiratory structures live in:

• water

• land

Animals that have diverse respiratory structures (some have lungs, others don't), live on:

• Water

• Land

Choose more than one.

Most vertebrates include:

• reptiles

• mammals

• centipede