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Disaccharides: Types, Characteristics, and Functions

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Disaccharides: Types, Characteristics, and Functions

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Questions and Answers

What is the common characteristic of disaccharides?

They are always bitter-tasting

They are white, crystalline solids (correct)

They are insoluble in water

They are always brown

Which of the following is NOT a type of disaccharide?

Sucrose

Maltose

Starch (correct)

Lactose

What is the function of disaccharides in plants?

To store energy and transport it in plants (correct)

To provide energy for animal growth

To break down proteins

To synthesize fats

What is the composition of sucrose?

<p>Glucose and fructose</p> Signup and view all the answers

What happens when disaccharides are hydrolyzed?

<p>They are broken down into their constituent monosaccharides</p> Signup and view all the answers

Study Notes

Disaccharides

Definition

A type of carbohydrate composed of two simpler sugars (monosaccharides) linked together through a glycosidic bond.

Types of Disaccharides

Sucrose (Table Sugar)
- Composed of glucose and fructose molecules
- Found naturally in many plants, especially sugarcane and sugar beets
Lactose (Milk Sugar)
- Composed of glucose and galactose molecules
- Found in milk and dairy products
Maltose
- Composed of two glucose molecules
- Formed during the breakdown of starch, especially in germinating seeds

Characteristics

Generally, disaccharides are:
- White, crystalline solids
- Sweet-tasting
- Soluble in water
- Can be hydrolyzed to form their constituent monosaccharides

Functions and Importance

Disaccharides play important roles in:
- Energy storage and transport in plants
- Providing energy for various cellular processes
- Serving as building blocks for more complex carbohydrates

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Description

Learn about the different types of disaccharides, including sucrose, lactose, and maltose, as well as their characteristics and functions in energy storage, transport, and cellular processes.