Levels of organization

What is the most basic level of biological organization that makes up all life?

• Organelles

• Cell

• Biomolecules

• Atoms

What level of biological organization is formed by many cells working together for a combined function?

• Tissues

• Organs

• Organ system

• Individual

What is an example of an organ in the human body?

• Heart

• Cell

• Stomach

• Muscle tissue

What level of biological organization includes multiple organs working together in a body?

• Individual

• Organs

• Tissues

• Organ system

What level of biological organization refers to a population of organisms of the same species?

• Community

• Individual

• Biome

• Ecosystem

What type of factors are not considered at the community level in biological organization?

• Abiotic

• Inorganic

• Biotic

• Organic

What level of biological organization includes both biotic and abiotic factors?

• Ecosystem

• Biome

• Individual

• Community

What level of biological organization represents the sum of all biomes on Earth?

• Biosphere

• Community

• Ecosystem

• Biome

What level of biological organization refers to a group of organisms of the same species that can reproduce with each other?

• Biome

• Ecosystem

• Population

• Community

What is the level of biological organization that includes all previous levels and represents the totality of life on Earth?

• Biome

• Ecosystem

• Biosphere

• Community