| Term | Definition |
|---|
| 4 necessities of life | food, air / oxygen, water, shelter |
| 6 characteristics of ALL living things | cells, DNA, sense & respond to change, energy, grow & develop, reproduce |
| asexual reproduction | only 1 parent and produces an identical copy of the parent; Ex. sea sponge |
| sexual reproduction | requires 2 parents and offspring have characteristics from both parents; Ex. dogs and cats |
| fats & oils | types of lipids |
| unicellular | made of a single cell; grow by getting bigger in size |
| multicellular | made of more than one cell; grow by increasing the number of cells |
| carbon, hydrogen, nitrogen, oxygen, phosphorous, and sulfur | 6 elements found in living things |
| 70% | all organisms are made of approx. this much water |
| 3 days | how long you can live without water |
| how humans obtain water | by drinking fluids & eating foods |
| stimulus | Ex. loud noise |
| response | Ex. flinch |
| compound light microscope | light passes through the specimen |
| scanning electron microscope and transmission electron microscope | both use electrons to magnify a specimen |
| all living things | have one or more cells |
| organisms use energy to | move materials in and out of cells; make or break down food; build cells |
| the human body's normal temperature | 37 degrees C; 98.6 degrees F |
| simple carbohydrates | made of one or a few sugar molecules; ex. table sugar |
| complex carbohydrates | made of hundreds of sugar molecules bonded together; ex. potatoes and pasta |
| proteins | Ex. hemoglobin in red blood cells; enzymes |
| many environmental problems are caused by this | people's misuse and improper disposal of natural resources |
| fats, oils and carbohydrates | what cells use for energy storage |
| air | a mixture of different gases |
| organisms must have food because | food is a source of energy |
| 1st step of the scientific method | ask a question based on observations |
| 2nd step of the scientific method | form a hypothesis |
| 3rd step of the scientific method | test the hypothesis by conducting experiments |
| 4th step of the scientific method | analyze the results collected from experiments |
| 5th step of the scientific method | draw conclusions from the results of your experiments |
| 6th step of the scientific method | communicate the results to other scientists |
| when a scientist finds that a hypothesis is wrong, the scientist | tries to find another explanation for what has been observed |
| scientific knowledge changes and grows due to | asking new questions, reexamining old ones, use of new technology, discovery of new information |
| cells use fats, oils and carbohydrates | to store energy |
| when you eat mashed potatoes, you are eating..... | a plant's stored starch |
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