Introduction to Matter
What is anything that has mass and takes up space?
Matter
What is the state of a substance that has a definite shape and a definite volume?
Solid
What is an organism?
Any living thing
What is the basic unit of structure in all living things?
Cells
When similar cells that perform the same function are grouped together they are called a ________.
Tissue
An _____ is the basic unit from which all matter is made.
An atom
What state of a substance has a definite volume, but not a definite shape?
Liquid
A single celled organism is called ____ ______.
Uni Cellular
What is called the brain of the cell that controls the functions of the organelle in the cell?
Nucleus
A ________ is a body structure composed of different kinds of tissues that work together. Examples (heart, lungs, skin, and kidneys.)
Organ
A _______ is a group of two or more atoms held together by chemical bonds.
A molecule
What state of a substance has no shape or volume?
Gas
What is a stimilus?
Any change or signal in the environment that causes a reaction in an organism.
Name two organelles that plant cells have that animal cells do not?
Cell Wall & Chroloplast
Every organ is part of an ______ _____ which is a group of organs that work together performing major functions.
Organ System
A ________ is a substance made of two or more elements that are chemically combined in a set up ratio.
Compound
This is the temperature that substance changes from a solid to a liquid?
Melting Point
What is a repsonse?
Any action or change in behavior of an organism.
What organelle of a cell allows transport of things in and out of the cell?
Cell Membrane
Name the two organ systems that initiate movement?
Nervous system & Muscle System
Explain the difference between a physical and chemical change?
A physical change alters the form or appearance of matter but does not turn any substance in the matter into a different substance.
A chemical change is a change in matter that produces one or more new substances.
A temperature at which a liquid boils is called the _________ __________.
Boiling Point
Vertebrates have a backbone and invertebrates do not.
This is the powerhouse of the cell?
Mitochondria
Name the levels of organization in a human body?
Cells, Tissues, Organ, Organ System, Organism