Cell Biology and Ecosystems Concepts

The video tutorial by Mr. Johnston covers the levels of organization in biology, starting from cells, the basic unit of life, to tissues, organs, and organ systems. It explains how these components work together to form organisms, which then interact within populations and communities. The tutorial also explores ecosystems, the biosphere, and the concept of biodiversity, highlighting the six kingdoms of life: archaea, bacteria, protists, fungi, plants, and animals.

What is the basic unit of life that can exist independently?

• Tissue

• Organ System

• Organ

• Cell

Which type of tissue is responsible for forming a protective barrier on the body?

• Nervous tissue

• Epithelial tissue

• Connective tissue

• Muscle tissue

What is formed when multiple tissues work together for a common purpose?

• Organ System

• Organ

• Cell

• Population

Which organ system is responsible for extracting energy from food?

• Respiratory system

• Circulatory system

• Nervous system

• Digestive system

What term describes a group of the same species living in the same area at the same time?

• Community

• Ecosystem

• Population

• Biosphere

What is the term for all living and non-living components in a specific area?

• Population

• Community

• Biome

• Ecosystem

Which of the following is not a component of an ecosystem?

• Biosphere

• Ammonia

• Water

• Oxygen

What is the term for the variety of life and its processes?

• Biosphere

• Biodiversity

• Community

• Ecosystem

Which kingdom includes organisms that are primarily unicellular and lack a nucleus?

• Protists

• Prokaryotes

• Fungi

• Plants

Which of the following kingdoms is known for organisms that can make their own food using sunlight?

• Protists

• Plants

• Animals

• Fungi