Exploring Levels of Organization in Multicellular Organisms

What are the basic needs of all cells to survive?

• Food, sunlight, structure, and air

• Food, water, sunlight, and air

• Water, sunlight, oxygen, and air

• Food, water, structure, oxygen, and air

What is the main difference between single-celled and multicellular organisms?

• Single-celled organisms do not need food, while multicellular organisms do

• Single-celled organisms have one cell, while multicellular organisms have multiple cells

• Single-celled organisms are plants, while multicellular organisms are animals

• Single-celled organisms have multiple cells, while multicellular organisms have one cell

Which type of cell is responsible for transmitting signals in the body?

• Blood cells

• Fat cells

• Nerve cells

• Heart cells

What do cells form when they work together in groups?

• Organs

• Organ systems

• Organisms

• Tissues

Which type of tissue is responsible for movement in the body?

• Cardiac tissue

• Muscle tissue

• Nerve tissue

• Skeletal tissue

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

• Muscle tissue

• Skin tissue

• Blood cells

• Heart

Which organ system is responsible for pumping blood and oxygen throughout the body?

• Nervous system

• Respiratory system

• Digestive system

• Circulatory system

What is the primary function of the heart as an organ?

• To filter waste

• To transmit signals

• To pump blood

• To digest food

What do organ systems form when they work together?

• Organs

• Cells

• Organisms

• Tissues

Which of the following is NOT an example of an organ system?

• Circulatory system

• Respiratory system

• Nervous system

• Muscle tissue