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Stack #4645044
| Question | Answer |
|---|---|
| Elements | any substance that cannot be broken down into simpler substances. |
| Compounds | when 2 or more elements chemically combine. |
| Organic compounds | carbohydrates, lipids, proteins, and nucleic acids. Organic compounds must contain carbon. |
| Inorganic compounds | water. Inorganic compounds DO NOT contain carbon. |
| Carbohydrates | energy rich organic compounds made of carbon, hydrogen, and oxygen. Items that have sugar and starches would be carbohydrates. Examples: potatoes, pasta, rice, and bread. |
| Lipids | Fats, oils, and waxes. Examples: whole milk, ice cream, and fried foods. |
| Proteins | large organic molecules made mostly of carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur. Examples: meat, dairy, fish, nuts, beans. |
| Enzymes | a group of proteins that helps speed up chemical reactions in living things. |
| Nucleic Acids | Long organic compounds made of carbon, oxygen, hydrogen, nitrogen, and phosphorus. Nucleic acids contain the instructions that carry out all the functions of life. |
| DNA: | The genetic material that carries information about an organism and is passed from parent to offspring. Double Helix: Shape of the DNA molecule |
| Water in cells | Water is needed for most chemical reactions in cells B. Water helps cells keep their shape. C. Water helps cells maintain their temperature D. Water helps cells carry substances in and out of them |