Storage forms of glucose in living things include which of the following?

• A. Glycogen and starch
• B. Cellulose and chitin
• C. Fructose and maltose
• D. Sucrose and lactose

Answer: (A)

Verified step by step guidance

1. Understand the concept of glucose storage: Glucose is stored in living organisms in the form of polysaccharides, which are long chains of glucose molecules linked together. These storage forms differ between animals and plants.
2. Identify the storage forms in animals: Glycogen is the primary storage form of glucose in animals. It is stored in the liver and muscles and can be broken down into glucose when energy is needed.
3. Identify the storage forms in plants: Starch is the main storage form of glucose in plants. It consists of amylose and amylopectin, which are polysaccharides that can be broken down into glucose during energy demand.
4. Clarify the structural polysaccharides: Cellulose and chitin are not storage forms of glucose. Cellulose is a structural component in plant cell walls, and chitin is found in the exoskeletons of arthropods and fungal cell walls.
5. Eliminate incorrect options: Fructose, maltose, sucrose, and lactose are simple sugars or disaccharides, not storage forms of glucose. They serve other roles, such as energy transport or immediate energy sources, but are not used for long-term storage.