Levels Of Organization In Living Organisms

The video tutorial explains the levels of organization in living organisms, starting from cells, the smallest unit, to tissues, organs, and organ systems. It details how tissues are groups of cells performing specific functions, and how organs consist of various tissues with different roles. The stomach is used as an example to illustrate the functions of different tissues, such as digestion and acid production. The tutorial concludes with a discussion on organ systems, like the digestive and respiratory systems, and how they work together to form a complete organism.

What is the smallest unit of living organisms?

• Tissue

• Organ

• Organ System

• Cell

What are tissues primarily composed of?

• Enzymes

• Systems

• Cells

• Organs

Which of the following is a function of the stomach?

• Excretion

• Respiration

• Circulation

• Digestion

How does the stomach prevent food from coming back up?

• By using enzymes

• By closing with flaps

• By absorbing food

• By producing bile

What is the role of muscle cells in the stomach?

• To absorb nutrients

• To help in churning food

• To produce acid

• To transport oxygen

Which organ system includes the stomach?

• Respiratory System

• Digestive System

• Nervous System

• Skeletal System

Which system is responsible for transporting nutrients and oxygen throughout the body?

• Digestive System

• Circulatory System

• Muscular System

• Excretory System

What is the primary function of the respiratory system?

• Waste removal

• Nutrient absorption

• Gas exchange

• Digestion

Which system is involved in removing waste products from the body?

• Excretory System

• Nervous System

• Skeletal System

• Muscular System

What is formed when all organ systems work together in harmony?

• A tissue

• A cell

• An organ

• An organism