The question asks for the general formula of carbohydrates. Carbohydrates are organic compounds that serve as a primary source of energy for living organisms. Their name literally means "hydrates of carbon," which gives a strong hint about their general chemical composition.
Correct Option: D) \(\text{C}_n(\text{H}_2\text{O})_n\) is the general formula for carbohydrates, reflecting their historical definition as "hydrates of carbon." This formula indicates that for every carbon atom, there is a unit of water (\(\text{H}_2\text{O}\)).
The question asks to identify a monosaccharide from the given options. To answer this, we need to understand the classification of carbohydrates, specifically what defines a monosaccharide, disaccharide, and polysaccharide.
Correct Option: C) Glucose is a monosaccharide. It is the simplest form of carbohydrate and serves as a fundamental energy source for living organisms.
The question asks to identify the specific type of bond that links two monosaccharide units to form a disaccharide. This is a fundamental concept in biochemistry, specifically related to carbohydrates.
B) Glycosidic bond is the covalent bond formed between two monosaccharide units through a dehydration reaction, resulting in the formation of a disaccharide or polysaccharide. This bond is characteristic of carbohydrates.
The question asks to identify the polysaccharide that serves as the storage form of glucose in animals. This requires knowledge of the primary storage carbohydrates in biological systems.
C) Glycogen is the polysaccharide that functions as the primary storage form of glucose in animals. It is readily broken down into glucose when energy is needed.
The question asks to identify the structural polysaccharide found in plant cell walls. This requires knowledge of common polysaccharides and their biological roles and locations.
D) Cellulose
Cellulose is the most abundant organic polymer on Earth and is the primary structural component of plant cell walls. It is a linear polysaccharide consisting of hundreds to thousands of \(\beta\)-1,4-linked D-glucose units. The extensive hydrogen bonding between cellulose molecules gives plant cell walls their high tensile strength and rigidity.
This question tests knowledge about disaccharides and their hydrolysis products. Sucrose is a common disaccharide, and understanding its chemical composition is key to determining what it breaks down into upon hydrolysis.
Correct Option: D) Glucose + Fructose