3.1 Chemical elements and water
3.1.1 State that the most frequently occurring chemical elements in living things are carbon, hydrogen, oxygen and nitrogen.
3.1.2 State that a variety of other elements are needed by living organisms, including sulfur, calcium, phosphorus, iron and sodium.
3.1.3 State one role for each of the elements mentioned in 3.1.2.
3.1.4 Draw and label a diagram showing the structure of water molecules to show their polarity and hydrogen bond formation.
3.1.5 Outline the thermal, cohesive and solvent properties of water.
3.1.6 Explain the relationship between the properties of water and its uses in living organisms as a coolant, medium for metabolic reactions and transport medium.
3.2 Carbohydrates, lipids and proteins
3.2.1 Distinguish between organic and inorganic compounds.
3.2.2 Identify amino acids, glucose, ribose and fatty acids from diagrams showing their structure.
3.2.3 List three examples each of monosaccharides, disaccharides and polysaccharides.
3.2.4 State one function of glucose, lactose and glycogen in animals, and of fructose, sucrose and cellulose in plants.
3.2.5 Outline the role of condensation and hydrolysis in the relationships between monosaccharides, disaccharides and polysaccharides; between fatty acids, glycerol and triglycerides; and between amino acids and polypeptides.
3.2.6 State three functions of lipids.
3.2.7 Compare the use of carbohydrates and lipids in energy storage.
3.3 DNA structure
3.3.1 Outline DNA nucleotide structure in terms of sugar (deoxyribose), base and phosphate.
3.3.2 State the names of the four bases in DNA.
3.3.3 Outline how DNA nucleotides are linked together by covalent bonds into a single strand.
3.3.4 Explain how a DNA double helix is formed using complementary base pairing and hydrogen bonds.
3.3.5 Draw and label a simple diagram of the molecular structure of DNA.
No comments:
Post a Comment