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Life Science
Chapter 3 Questions
| Question | Answer |
|---|---|
| What types of things are made up of elements? | Everything is made up of elements or a combination of elements. |
| Why is a combination of sugar and salt said to be a mixture? | It is a combination of 2 substances, each of which retains its own properties when combined with the other. |
| What are 3 types of lipids? | fats, oils and phospholipids. |
| What is equilibrium? | when the relative number of molecules in a substance is equal in the two areas. |
| Why do carrots in salt water become limp? | There are fewer water molecules around the carrot cells than inside the carrot cells, water leaves the carrot and moves into the salt solution. |
| Why do salty foods make you more thirsty? | The salt present in the food causes water to leave your cells; the lost water needs to be replaced by the body. |
| What must happen to food molecules for respiration to take place? | they must be broken down into simpler substances and their stored energy released. |
| Where in a cell does fermentation take place? | cytoplasm. |
| What are 4 organic compounds? | carbohydrates, proteins, lipids, nucleic acids |
Created by:
Iglehart
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