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Body Systems
Review for test
| Question | Answer |
|---|---|
| What are the two ways for living things to make or use energy | photosynthesis and respiration |
| What is the formula for photosynethesis | Carbon dioxide + water + sunlight = oxygen + glucose |
| What is the formula for respiration | oxygen +glucose = carbon dioxide + water + energy |
| Where does respiration take place in a cell | Mitochondria |
| Where does photosynthesis take place in a cell | Chloroplasts |
| How are photosynthesis and respiration related to each other | They are the reverse reactions of each other with the exception that photosynthesis needs sunlight energy to occur and respiration produces energy for your cells. |
| How do cells get oxygen and carbon dioxide across their membrane | Diffusion |
| Diffusion | the movement of particles from an area of high concentration to an area of low concentration |
| Why is there always a high concentration of oxygen outside your cells compared to the inside | Because the oxygen is constantly being “burned up” inside the cell in the process of respiration. |
| Why is there always a high concentration of carbon dioxide inside the cell compared to the outside | Because the carbon dioxide is constantly being produced inside the cell as a result of the ongoing process of respiration. |
| What are the levels of cell organization in your body | Cells, tissues, organs and organ systems |
| Examples of Cells | muscle cells, nerve cells, epithelial cells, bone cells, blood cells |
| Examples of Tissues | muscle tissue, nerve tissue, connective tissue, epithelial tissue |
| Examples of Organs | stomach, heart, brain, bones, liver, lungs, intestines |
| Examples of Organ systems | circulatory system, respiratory system, digestive system, skeletal system |
| What three systems that work together to get oxygen and nutrients to your cells and carbon dioxide and wastes out | Digestive system, Respiratory system and Circulatory system |
| Where do nutrients enter bloodstream in the digestive system | In the villi of the small intestine |
| Where does oxygen reach the blood in the respiratory system | At the alveoli of the lungs |
| Where does blood deliver the nutrients and oxygen to the body cells in the circulatory system | At the capillaries that surround the cells |
| Design an experiment to determine the connection between exercise and pulse rate | think about it |
| Why do your breathing and heart rate increase as you exercise | You need to deliver more O2 and nutrients to your cells to generate more energy through respiration |
| Name three different careers in the health industry that you can pursue in New Brunswick | any 3 will do |