Year 9 Term 1 - Revision Points

Chapter 3 - Matter and energy Moving Around (Updated by Mrs Ariotti 14/03/08)

Section 3.1 - Source of Energy

• Describe the role and importance of cellular respiration and photosynthesis.
• Be able to write word equations for cellular respiration and photosynthesis.
• Be able to compare cellular respiration and photosynthesis.
• Know some of the things that a plant makes from glucose.
• Know the meaning of the terms producers and consumers.
• Know why plants have a transport system.
• Know the function of xylem and phloem.

Section 5.4 - Food, Glorious Food

• Know the function of food, carbohydrates, proteins, fats and oils, vitamins and minerals and water.
• Know the main compounds found in food.
• Know what elements are found in carbohydrates and the basic unit of the carbohydrates.
• Be able to explain the meaning of monosaccharides, disaccharides, polysaccharides - give examples of each, and give examples of foods in which carbohydrates are found.
• Know which carbohydrate cannot be broken down in the digestive system and its function.
• Be able to explain how tests can be performed to identify glucose and starch
• Know the function of fats and oils (lipids); know what elements are found in them
• Be able to explain the difference between fats and oils and give examples of foods in which they are found.
• Be able to compare lipids with carbohydrates.
• Know the functions of proteins and the elements that they are composed of.
• Know the basic unit of the proteins.
• Be able to give examples of foods in which proteins are found.
• Know the products of digestion of carbohydrates, fats and oils (lipids), and proteins.

Section 3.2 - Consumer Organisms

• Know the meaning of digestions.
• Be able to compare mechanical and chemical digestions.
• Know the function of enzymes - amylase, protease and lipase; know what nutrients in food that these enzymes act on.
• Know the main organs of the digestive system - the alimentary canal.
• Be able to label the parts of human digestive system.
• Know the function of the mouth, salivary glands, tongue, oesophagus, cardiac sphincter, stomach, pyloric sphincter, liver, gall bladder, bile duct, pancreas, small intestine, large intestine, rectum and anus.
• Be able to explain the meaning of the term peristalsis.
• Be able to explain the function of the following and also what they contain - saliva, gastric juice, pancreatic juice, intestinal juice.
• Be able to explain the function of bile
• Know the four main features of the small intestine that aid adsorption.
• Know where most of the digestion of food occurs and where adsorption of food molecules occurs.
• Be able to explain the meaning of the following - faeces, defecation,
• Be able to explain the contribution of ‘good' bacteria in the large intestines.
• Be able to explain some ways in which the digestive system of of other animals differs from that of humans - e.g. cow, snake, birds.
• Be able to compare these digestive systems with the human digestive system.
• Know the various types of teeth - be able to determine from the type of the teeth whether an animal is likely to be a carnivore or herbivore.

Section 3.3 - Energy Flow through a Food Web

• Know the meaning of terms - herbivore, carnivore, scavenger, decomposer.
• Be ble to draw food chains and food webs given information about the food or various organisms.
• know the meaning of biomass and be able to draw a pyramid of biomass.
• Know the meaning of bioaccumulation and biomagnification.
• Know the meaning of detritus and detriovores.
• Be able to interpret and compare the oxygen, carbon and nitrogen cycles.