Biology IGCSE: Human Nutrition

This is a Biology IGCSE covering Topic 7 Human Nutrition - Cambridge Assessment - Codes (0610) and (0970)

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Biology Cambridge IGCSE Course – Code 0610 and 0970: Topic 7 – Human Nutrition

Course Description:

Welcome to our Biology Cambridge IGCSE course, meticulously tailored to help you conquer the intricacies of Topic 7: Human Nutrition. This comprehensive course is specifically designed for both Code 0610 and Code 0970 syllabi, ensuring you’re well-prepared for the IGCSE Biology examination.

Course Highlights:

  • Comprehensive Core and Supplement Objectives: Master all core and supplement objectives as outlined in the syllabus for theory (papers 1, 2, 3, 4). These objectives provide a solid foundation for exam success.
  • Note: There are no practical experiments associated with this topic.

Course Outline & Objectives (Core and Supplement):

  1. Diet (Lesson 1): Key objectives include:
  • Describe what is meant by a balanced diet.
  • State the principal dietary sources and describe the importance of:

(a) carbohydrates

(b) fats and oils

(c) proteins

(d) vitamins, limited to C and D

(e) mineral ions, limited to calcium and iron

(f) fiber (roughage)

(g) water

  • State the causes of scurvy and rickets.
  1. Digestive System (Lesson 2): Key objectives include:
  • Identify in diagrams and images the main organs of the digestive system, limited to (a) the alimentary canal: mouth, esophagus, stomach, small intestine (duodenum and ileum), and large intestine (colon, rectum, anus) (b) associated organs: salivary glands, pancreas, liver, and gall bladder.
  • Describe the functions of the organs of the digestive system listed in 1, in relation to (a) ingestion – the taking of substances, e.g., food and drink, into the body (b) digestion – the breakdown of food (c) absorption – the movement of nutrients from the intestines into the blood (d) assimilation – uptake and use of nutrients by cells (e) egestion – the removal of undigested food from the body as feces.
  1. Physical Digestion (Lesson 3): Key objectives include:
  • Describe physical digestion as the breakdown of food into smaller pieces without chemical change to the food molecules.
  • State that physical digestion increases the surface area of food for the action of enzymes in chemical digestion.
  • Identify in diagrams and images the types of human teeth: incisors, canines, premolars, and molars.
  • Describe the structure of human teeth, limited to enamel, dentine, pulp, nerves, blood vessels, and cement, and understand that teeth are embedded in bone and gums.
  • Describe the functions of the types of human teeth in the physical digestion of food.
  • Describe the function of the stomach in physical digestion.
  • Outline the role of bile in emulsifying fats and oils to increase the surface area for chemical digestion.
  1. Chemical Digestion (Lesson 4): Key objectives include:
  • Describe chemical digestion as the breakdown of large insoluble molecules into small soluble molecules.
  • State the role of chemical digestion in producing small soluble molecules that can be absorbed.
  • Describe the functions of enzymes as follows: (a) amylase breaks down starch to simple reducing sugars (b) proteases break down protein to amino acids (c) lipase breaks down fats and oils to fatty acids and glycerol.
  • State where, in the digestive system, amylase, protease, and lipase are secreted and where they act.
  • Describe the functions of hydrochloric acid in gastric juice, limited to killing harmful microorganisms in food and providing an acidic pH for optimum enzyme activity.
  • Describe the digestion of starch in the digestive system: (a) amylase breaks down starch to maltose (b) maltase breaks down maltose to glucose on the membranes of the epithelium lining the small intestine.
  • Describe the digestion of protein by proteases in the digestive system: (a) pepsin breaks down protein in the acidic conditions of the stomach (b) trypsin breaks down protein in the alkaline conditions of the small intestine.
  • Explain that bile is an alkaline mixture that neutralizes the acidic mixture of food and gastric juices entering the duodenum from the stomach, to provide a suitable pH for enzyme action.
  1. Absorption (Lesson 5): Key objectives include:
  • State that the small intestine is the region where nutrients are absorbed.
  • State that most water is absorbed from the small intestine but that some are also absorbed from the colon.
  • Explain the significance of villi and microvilli in increasing the internal surface area of the small intestine.
  • Describe the structure of a villus 5 Describe the roles of capillaries and lacteals in villi.

Course Benefits:

  • Engage with meticulously crafted video lessons, providing comprehensive explanations of each lesson and experiment.
  • Access downloadable summary study sheets that condense essential information, aiding your pursuit of an A* grade.
  • Enhance your preparation with quizzes and assignments based on past papers to boost your confidence for the exam.
  • Become part of a dynamic student group community, where you can interact with fellow learners and the course instructor, asking questions and sharing updates.

Unlock the captivating world of biology and prepare to excel in the IGCSE Biology examination through our “Biology Cambridge IGCSE Course – Code 0610 and 0970: “Human Nutrition” course.

You will need:

  • Computer or Mobile
  • Internet
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Lawra Hasayen Instructor
I'm the founder of Lawra Academy, with over two decades of teaching experience in Biology. I've had the privilege of instructing high school students preparing for exams such as IGCSE, A-levels, SAT, AP, IB, and SABIS, as well as offering tutoring to university students in various Business Administration subjects. During my extensive career, I spent more than 13 successful years at King Saud International School. My students consistently achieved outstanding results, often earning A* grades. Additionally, I served as the head of the biology department. Eventually, I decided to embark on my entrepreneurial journey, leading to the establishment of Lawra Academy.