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phls 2-1
characteristics of living things
| Question | Answer |
|---|---|
| What are unicellular organisms | single cell organisms |
| Most numerous organisms on earth? | Bacteria |
| Why are cells multicellular? | To perform different jobs or functions |
| The most abundant chemical in the body is... | water |
| The chemicals that are the cell's main energy source are | Carbohydrates |
| What two chemicals are the building blocks of cells? | Proteins and lipids |
| What are the chemicals that provide the chemical instructions to the cell? | Nucleic acids |
| What are 5 common chemicals of life found in cells? | Water, carbohydrates, proteins, lipids, nucleic acids |
| What is a change in an organism's environment that causes it to react? | A stimulus |
| What is the change in an organisms's behavior due to a stimulus? | A response |
| Living things grow. What is growth? | The process of becoming larger. |
| Living things develop. What is development? | Development produces a more complex organism. |
| What is reproduction? | The ability to produce offspring that are similar to the parents. |
| What was the mistaken idea that living things could arise from nonliving sources? | Spontaneous generation. |
| In Redi's experiment what was his manipulated variable? | Whether the jars were covered or uncovered |
| Name 6 characteristics that all living thing share. | Cellular organization, chemicals of life, energy use, response to surroundings, growth and development and reproduction. |
| All living things have basic needs for life, which are... | Water, food, living space, homeostasis |