AP BIOLOGY

THE CELL

STRUCTURE AND FUNCTION OF THE CELL

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
One sugar molecule, two sugar molecules, or a long chain of sugar molecules make up
A
carbohydrates
B
lipids
C
nucleic acids
D
proteins
Explanation: 

Detailed explanation-1: -Simple carbohydrates or ‘simple sugars’ include one (monosaccharide) or two sugar molecules (disaccharides). Whereas complex carbohydrates contain many sugar molecules linked together (polysaccharides).

Detailed explanation-2: -Simple sugars are called monosaccharides; these are made up of single sugar molecules. The three main monosaccharides that we consume are fructose, galactose and glucose.

Detailed explanation-3: -disaccharide, also called double sugar, any substance that is composed of two molecules of simple sugars (monosaccharides) linked to each other.

Detailed explanation-4: -Complex carbohydrates are polymers of the simple sugars. In other words, the complex carbohydrates are long chains of simple sugar units bonded together (for this reason the complex carbohydrates are often referred to as polysaccharides).

Detailed explanation-5: -Polysaccharides: Starch, Glycogen, and Cellulose However, sugar units can be bonded or linked together to form polysaccharides, which consist of many sugars linked together to form extensive chains of sugars. Plants store energy as starch, which consists of very long chains of glucose linked together.

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