| A | B |
|---|
| atoms | Everything in the world is made up of tiny particles called ______________ |
| Nucleic | ____________acids enable cells to build their own proteins |
| tissue | A group of similar cells that work together to perform the same function |
| organ | A group of two or more types of tissue that work together to carry out one specific function |
| organ systems | A group of organs working together |
| element | a pure substance that cannot be broken down into a simpler substance and is made up of only one type of atom |
| compound | A new substance formed by the chemical combination of two or more elements |
| Robert Hooke | The first person to observe a cell through a microscope |
| unicellular | Anton van Leeuwenhock was the first person to observe _________________ organisms |
| nucleus | Robert Brown was the first person to discover the ______________ of a plant cell |
| organisms | All _______________ are made up of one or more cells. |
| multicellular | _____________ organisms are made of more than one cell |
| unicellular | A _______________ organism is made up of only one cell |
| connective | Bones, cartilage, tendons, fat, and blood are __________________ tissue |
| circulatory | The _________________ system in humans combines blood vessels, blood, and the heart to deliver oxygen and nutrients to the cells and remove wastes |
| carbohydrates | ________________ are compounds that provide energy to cells |
| lipids | _____________ which include fats store and release energy |
| proteins | ___________ are needed for cell growth and repair |
| cell | The basic unit of life and the smallest part of a living thing that is capable of life |
