Biological Levels in Biology: The World Tour

The video introduces the biological levels of organization, starting from the cellular level, which is the basic unit of life. It explains how cells form tissues, which then form organs and organ systems. These systems make up an organism. The video further explores how organisms form populations, which combine to create communities. When abiotic factors are included, these communities form ecosystems. Multiple ecosystems across the globe form biomes, and all biomes together constitute the biosphere. The video emphasizes the importance of understanding these levels to relate them to each other and the whole system.

What is the smallest unit of life that makes up all living organisms?

• Organelles

• Cells

• Biomolecules

• Atoms

Which of the following is an example of tissue?

• Heart

• Cardiac muscle tissue

• Digestive system

• Liver

What do multiple organs working together form?

• Tissues

• Organ systems

• Cells

• Communities

What is formed when different populations of species interact in a shared environment?

• Community

• Biome

• Biosphere

• Ecosystem

What is the term for the sum of all biomes on Earth?

• Ecosystem

• Community

• Biosphere

• Population