Levels of Organization
What is the smallest level of organization in the human body?
The cell
Which system controls body activities quickly using signals?
The nervous system
What is artificial selection?
Humans choosing which organisms reproduce
What is taxonomy?
The science of classifying organisms
What is an organ?
A structure made of different tissues that perform a specific function
What is the function of the circulatory system?
To transport oxygen, nutrients, and wastes
What is natural selection?
Organisms with helpful traits survive and reproduce more
What kingdom do plants belong to?
Plantae
What is a tissue?
A group of similar cells that work together to perform a specific function
Which system helps the body breathe?
The respiratory system
Give an example of artificial selection.
Breeding dogs for specific traits
What kingdom do humans belong to?
Animalia
What are the levels of organization in the human body (from smallest to largest)?
Cell - Tissue - Organ - Organ System - Organism
What is the function of the digestive system?
To break down food and absorb nutrients
Who is known for the theory of natural selection?
Charles Darwin
Just name four kingdoms.
Protista, Fungi, Plantae, Animalia