Levels Of Organization Flashcards
What are elements?
Unique pure substances that make up all matter in the universe
Examples include hydrogen, oxygen, carbon, nitrogen, calcium, and iron.
What is the smallest unit of an element?
Atom
What are the subatomic particles that make up an atom?
Proton, electron, neutron
What do two or more atoms combine to form?
Molecule
What are molecules considered in the context of body structures?
Chemical building blocks
What is the smallest independently functioning unit of a living organism?
Cell
What is the cellular structure of bacteria?
Each bacterium is a single cell
What does a human cell typically consist of?
Flexible membranes, cytoplasm, organelles
What do cells perform?
All functions of life
What is a tissue?
A group of many similar cells that work together for a specific function
What is an organ?
An anatomically distinct structure composed of two or more tissue types
What does an organ perform?
One or more specific physiological functions
What is an organ system?
A group of organs that work together to perform major functions
Fill in the blank: The chemical building blocks of all body structures are _______.
Molecules
True or False: All living structures of human anatomy contain cells.
True
Fill in the blank: A _______ is a group of many similar cells that work together to perform a specific function.
Tissue
Fill in the blank: A cell is the smallest _______ functioning unit of a living organism.
Independently
