GCSE Biology - Levels of Organisation - Cells, Tissues, Organs and Organ Systems

The video tutorial explores the hierarchical organization within multicellular organisms, starting from organelles and cells, progressing through tissues and organs, and culminating in organ systems and the complete organism. It explains the specific roles and functions at each level, providing examples such as epithelial and muscle tissues, organs like the stomach and liver, and systems like the digestive and cardiovascular systems. The tutorial emphasizes the complexity and interdependence of these biological structures.

What are organelles and what role do they play in a cell?

• They are tissues that form organs.

• They are systems that form organisms.

• They are subcellular structures with specific roles.

• They are the entire cell and perform all functions.

Which of the following is an example of a specialized cell?

• Digestive system

• Nerve cell

• Bone tissue

• Heart organ

How is an organ different from a tissue?

• An organ is a group of similar cells.

• An organ is a group of organ systems.

• An organ is a group of different tissues.

• An organ is a single cell.

Which of the following is an example of an organ system?

• Nucleus

• Digestive system

• Muscle cell

• Epithelial tissue

What is the highest level of organization in a multicellular organism?

• Organ

• Organism

• Tissue

• Cell