Levels of Organization
This is the smallest level of organization and is the building block of tissues.
What is a cell?
This system controls body activities and sends signals using nerves
What is the nervous system?
These two systems work together to move oxygen from the lungs to body cells
What are the respiratory and circulatory systems
This organ is the main pump of the circulatory system
What is the heart?
Both circulatory and nervous systems often perform these actions without conscious thought.
What is operating automatically?
"This level is made of similar cells working together and comes after cells."
What is tissue?
This system pumps blood and delivers oxygen and nutrients
What is the circulatory (cardiovascular) system?
The nervous system tells muscles to contract; together with this system it allows movement
What is the muscular system?
This organ is the main organ of the respiratory system and is protected by the rib cage
What are the lungs?
Both the respiratory and circulatory systems help the body do this with oxygen
What is transport oxygen?
This level is made of different tissues working together to perform a specific job (example: stomach).
What is an organ?
This system brings in oxygen and removes carbon dioxide and works closely with the circulatory system
What is the respiratory system?
This pair works together when nutrients from the stomach are delivered to the rest of the body
What are the digestive and circulatory systems?
This part of the skeletal system protects the brain
What is the skull?
This system transports nutrients from the digestive system throughout the body
What is the circulatory system?
This is the correct full sequence from smallest to largest
What is cell → tissue → organ → organ system → organism?
This system breaks down food into nutrients the body can use.
What is the digestive system?
Breathing rate is controlled automatically by this system to support this other system’s need for oxygen
What are the nervous system (controls breathing) and the respiratory system (supplies oxygen)?
This organ system is protected by the rib cage and helps exchange gase
What is the respiratory system?
The correct answer choice for the comparison of nervous vs. circulatory in the test: nervous controls activities; circulatory ___.
What is transports oxygen and nutrients throughout the body?
On a pyramid, this level should be placed above cells but below organs
What is tissue?
This system gives the body shape, supports it, and protects organs like the lungs
What is the skeletal system?
A biologist’s notes list blood, veins, stomach, and colon; these two systems match those notes.
What are the circulatory and digestive systems?
Name an organ that is part of the digestive system and is mentioned in the test (one of: stomach, colon, esophagus
What is the stomach? (or What is the colon? or What is the esophagus?)
When a student lists the pyramid levels as Organism → Organ system → Organ → Cell → Tissue (top to bottom), this single swap will fix it
What is switch cell and tissue?