| A | B |
|---|
| cell | the smallest unit of a living thing that can carry on life processes |
| scientific methods | organized ways of solving problems; the processes scientists use for getting information and testing ideas |
| experiment | a procedure used to test a hypothesis |
| observation | the act of watching or using the other senses to gather information and learn about something. |
| conclusion | a logical judgment based on facts |
| hypothesis | an explanation on how something works, based on many observations. |
| mitochondria | the parts of a cell that give the cell the energy it needs to grow and reproduce |
| cytoplasm | a jellylike material that makes up most of a cell. |
| nucleus | in life science, a cell’s control center, which contains genetic material. In chemistry and physics, the protons and neutrons forming the core of an atom (plural: nuclei) |
| ribosomes | a part of the cell that makes proteins that the cell needs in order to grow |
| cell membrane | a layer around the cell that controls what can enter or leave the cell |
