Chemical Compositions in a Cell

Question 1:Diagram 1 shows the formation of triglyceride.Diagram 1(a)(i) Name R and S. [2 marks](a)(ii) In Table below, state the number of molecules for R and S. [2 marks](b)(i) Name process W. [1 mark](b)(ii) Explain process W. [2 marks](c) Triglyceride is a type of lipid.State one function of triglyceride in human. [1 mark](d) Diagram 2 … Read more

Question 1:Diagram I shows two levels of organization in protein structure.(a) In Diagram I, name the level of organization in the protein structures of P and Q.(b) Describe the structure of protein P.(c) Diagram II shows how protein P is broken down to form products.(d) Explain how the products in Diagram II are formed.(e) State … Read more

Disaccharides are formed when two monosaccharides combine together through a chemical process called the condensation.Disaccharides are known as complex sugar.Examples of disaccharides are,Maltose known as malt sugar. It is a reducing sugarIt is formed from condensation of two glucose molecules.Glucose + glucose → maltose + water Found in germinating cerealsProduced during digestion of starchSucroseIt is found in sugar cane, beet … Read more

Monosacharides are monomers of carbohydrates. Examples of monosacharides are:Glucose — found in plants and animals (It is the energy source for cellular respiration)Fructose — found in fruits and honeyGalactose — present in milkThey are reducing sugars, they can remove oxygen from other compounds..They can be detected by using Fehling’s or Benedict’s test. When monosaccharides are heated with … Read more