Cells
What is the smallest unit of life?
Cells
What is the function of the digestive system?
Breaks down food into nutrients to be used by the body cells for energy
What is the smallest unit of matter?
Atom
What is a rotation (in reference to Earth's movement)?
Earth spinning on its axis
What does the cell membrane do?
Allows for certain substances to pass in and out of the cell
What is the function of the circulatory system?
Moves blood throughout the body
What is the law of conservation of mass?
Mass cannot be created nor destroyed
What is a revolution(in reference to Earth's movement)?
Earth orbiting the sun
What does the chloroplast do in plant cells?
Converts sunlight into usable energy
What is the function of cellular respiration?
Cells convert sugar into energy
What defines a chemical change?
A new substance is produced
What are tectonic plates and what do they do?
Sections of Earth's crust that move
What does the nucleus of a cell contain, and what structure does it take?
DNA; chromosomes form an X shape
What is the function of the respiratory system?
Gas exchange in the lungs
They speed up
What are Earth's layers?
Crust, Mantle, Core
What are the two key differences between a plant and animal cell?
Cell wall and chloroplast
What is the complexity progression of cells in the human body?
Cells --> Tissues --> Organs --> Organ Sytems --> Organism
If I start a reaction with 6 atoms of hydrogen, how many will I have in my products?
6 atoms of H
What causes the change of seasons?
Earth's tilt