Practice B1.1 Carbohydrates and lipids with authentic IB Biology exam questions for both SL and HL students. This question bank mirrors Paper 1A, 1B, 2 structure, covering key topics like cell biology, genetics, and ecology. Get instant solutions, detailed explanations, and build exam confidence with questions in the style of IB examiners.
During digestion, how is a water molecule used to break down polymers into monomers?
What feature of cellulose allows it to form rigid plant cell walls?
How is carbon able to form a wide variety of stable organic molecules?
What characteristic of glucose makes it suitable for transport in the bloodstream?
What makes starch suitable for energy storage in plant cells?
| Property | Contribution to Storage Function |
|---|---|
| Insolubility in water | Prevents osmotic imbalance |
| Helical structure | Enables compact packing |
| Easily hydrolyzed | Allows rapid energy release |
What is a reason glycogen offers a metabolic advantage over unbranched polysaccharides?
Which reaction correctly links monomers into polymers?
Which of the following are formed by condensation reactions?
I. Polysaccharides
II. Polypeptides
III. DNA strands
Which of the following are monosaccharides?
I. Glucose
II. Ribose
III. Sucrose
Which of the following features allow glycogen to be efficiently broken down during energy demand?
I. Highly branched structure
II. Enzyme accessibility to many chain ends
III. High water solubility