Understanding Organisms

What is the basic unit of life in all living organisms?

• Cell

• Organism

• Organ

• Tissue

Which organ is responsible for pumping blood throughout the body?

• Lungs

• Kidneys

• Heart

• Liver

What part of the cell contains the genetic material?

• Endoplasmic reticulum

• Ribosomes

• Nucleus

• Mitochondria

Which organ system is responsible for breaking down food?

• Respiratory system

• Nervous system

• Circulatory system

• Digestive system

What is the function of the lungs in the human body?

• The lungs filter toxins from the blood.

• The lungs produce hormones that regulate metabolism.

• The function of the lungs is to facilitate gas exchange, providing oxygen to the blood and removing carbon dioxide.

• The lungs store excess nutrients for the body.