4.1 Give THREE common disaochanides that you have studied. 42 State the bond formed when two monosaccharides are held together to form a disaccharide. 43 Give FOUR functions of carbohydrates in piants [TOTAL SECTION B: 40]

Certainly! Below are the answers to the questions you've provided: --- **4.1. Give THREE common disaccharides that you have studied.** 1. **Sucrose** - Commonly known as table sugar, it is composed of glucose and fructose. 2. **Lactose** - Found in milk, it is made up of glucose and galactose. 3. **Maltose** - Produced during the digestion of starch, it consists of two glucose molecules. --- **42. State the bond formed when two monosaccharides are held together to form a disaccharide.** - **Glycosidic Bond** - A covalent bond formed between the hydroxyl group of one monosaccharide and the anomeric carbon of another, releasing a molecule of water in the process (a dehydration synthesis reaction). --- **43. Give FOUR functions of carbohydrates in plants.** 1. **Energy Storage** - Carbohydrates like **starch** serve as a storage form of energy, which plants can utilize when needed. 2. **Structural Support** - **Cellulose**, a complex carbohydrate, provides rigidity and strength to plant cell walls, maintaining structural integrity. 3. **Energy Provision** - Carbohydrates are metabolized to produce ATP, supplying energy for various cellular processes. 4. **Cell Recognition and Signaling** - Carbohydrate molecules on the cell surface play roles in cell-cell recognition, signaling, and interactions, which are crucial for growth and development. --- Feel free to ask if you need further clarification on any of these topics!