Question

in plant cells, glucose and fructose can react to form sucrose. plants with high levels of sucrose, like beets and sugar cane, are harvested by people to make granulated sugar for baking and cooking.
the model shows the chemical structure of sucrose.
chemical structure of sucrose image
sucrose
c₁₂h₂₂o₁₁
select the true statements.

• monosaccharides are made by joining two disaccharides.
• beets are a source of sucrose.
• sucrose can be made in plant cells.
• fructose and glucose have the same chemical structure.

Explanation:

1. Analyze "Monosaccharides are made by joining two disaccharides": Monosaccharides are the simplest sugars (e.g., glucose, fructose), and disaccharides (e.g., sucrose) are formed by joining two monosaccharides. So this statement is false.
2. Analyze "Beets are a source of sucrose": The text says "Plants with high levels of sucrose, like beets and sugar cane...", so this statement is true.
3. Analyze "Sucrose can be made in plant cells": The text states "In plant cells, glucose and fructose can react to form sucrose", so this statement is true.
4. Analyze "Fructose and glucose have the same chemical structure": From the model, glucose and fructose have different ring structures and functional group arrangements, so this statement is false.

Answer:

B. Beets are a source of sucrose, C. Sucrose can be made in plant cells