Topic 2 Year 7 biology
| Biology | |||
| Topic | Organisms 2 | ||
| No of lessons | 11 | ||
| When is it happening | Term 1 Year 8 | ||
| What will students learn | Respiration is a chemical reaction which releases energy from glucose. Breathing is a physical action involving the lungs, rib cage and diaphragm. Students need to learn the parts of the respiratory system and their function. The structure of alveoli and how this helps in gas exchange. The process of diffusion. How smoking, exercise and asthma affect breathing and gas exchange. The processes involved in breathing: inhaling and exhaling. How to measure lung volume. The constituents of a healthy, balanced diet. The role of the 6 main food groups in maintaining health. The structure and function of the different parts of the digestive system. The function of enzymes, bile and bacteria in the digestive system. Understanding food labels. | ||
| Key Knowledge that students should know at the end of 'Topic' | This is the knowledge that students will meet for the first time in this topic | Structure and function of the respiratory system. Be able to label a diagram of the respiratory system. Structure of alveoli in detail to include how they are adapted for efficient gas exchange. The process of diffusion in the alveoli. The effects of smoking, exercise and asthma on the lungs and gas exchange. The processes involved in inhaling and exhaling and the consequent changes to lung volume and pressure. Limitations to models of the respiratory system. Which food group different types of food belong in. The main functions of the different food groups. Why vitamins are essential. What constitutes a balanced diet. To name the different parts of the digestive system and to state their different functions. Be able to label a diagram of the digestive system. The role of enzymes in digestion. The role of bile in lipid digestion. The role of bacteria in digestion. Understand how to interpret food labels. Evaluate models of the digestive system. | |
| This is knowledge that students may have met before but will need to deepen their understanding | From KS2: Simple structure and function of the human digestive system. The impact of diet on the body. Identify that animals, including humans, need the right types and amount of nutrition, and that they cannot make their own food; they get nutrition from what they eat. From Organisms part 1 (Year 7 term 1) the structure and function of ciliated epithelium. | ||
| Key Skills that students should be able to demonstrate at the end of 'Topic' | This is the skills that students will meet for the first time in this topic | Labelling and annotating scientific diagrams. Evaluating models. Analysing information on food labels. | |
| This is skills that students may have met before but will need to develop | Labelling scientific diagrams. | ||
| Key vocabulary that students should know and understand |
Breathing, trachea, cilia, mucus, pathogens, bronchi, bronchioles, alveoli, ribs, diaphragm, capillaries, diffusion, concentration, cancer, tumour, asthma, lung volume, ventilation, intercostal muscles, inhalation, exhalation, bell jar, correlation, lung capacity, diet, vigorous, balanced diet, stimulant, depressant, hallucinogens, painkiller, addictive, cancer, carbohydrates, protein, lipids, fibre, faeces, vitamins, minerals, oesophagus, pancreas, gall bladder, rectum, anus, enzymes, bile, villi, mechanical, chemical, catalysts, carbohydrase, protease, lipase, glycerol, emulsifies, gut bacteria, saturated fats, %RI, calories, kilojoules, visking tubing |
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| The Big Question | Why are breathing and digestion so important to life? | ||
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Key questions that students should be able to answer at the end of the 'Topic' |
What makes up our respiratory system and what are their functions? | ||
| How is the structure of an alveolus related to its function? | |||
| What happens to our bodies when we breathe in and out? | |||
| Why do we use models of the respiratory system? | |||
| What is the relationship between height and lung volume? | |||
| What is in a balanced diet? | |||
| What makes up the digestive system and what are their functions? | |||
| How does our body digest the food we eat? | |||
| Food packaging labels - why do we need them? | |||