Carbohydrate Chemistry Basics

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Questions and Answers

What are carbohydrates made of?

  • Carbon, hydrogen, oxygen, and nitrogen
  • Hydrogen, oxygen, and nitrogen
  • Carbon, hydrogen, and oxygen (correct)
  • Carbon, oxygen, and nitrogen

How are carbohydrates classified based on the number of sugar units?

  • Monosaccharides, disaccharides, oligosaccharides, and polysaccharides (correct)
  • Monosaccharides, disaccharides, and polysaccharides
  • Monosaccharides, disaccharides, trisaccharides, and polysaccharides
  • Monosaccharides, disaccharides, oligosaccharides, and trisaccharides

Which classification of carbohydrates contains more than 10 sugar units?

  • Disaccharides
  • Polysaccharides (correct)
  • Oligosaccharides
  • Monosaccharides

How are monosaccharides classified based on the number of carbon atoms?

<p>Trioses, tetrises, pentoses, hexoses (A)</p> Signup and view all the answers

According to the presence of aldehyde or ketone group, how are monosaccharides divided?

<p>Aldoses and ketoses (B)</p> Signup and view all the answers

Which type of isomers differ in their functional groups?

<p>Aldose-Ketose Isomers (A)</p> Signup and view all the answers

Which polysaccharide is the chief storage form of carbohydrates in plants?

<p>Starch (B)</p> Signup and view all the answers

Which type of disaccharide has both anomeric carbons involved in the linkage?

<p>Sucrose (A)</p> Signup and view all the answers

What is the storage form of carbohydrates in animals, mainly present in skeletal muscles and liver?

<p>Glycogen (A)</p> Signup and view all the answers

What is the function of cellulose in the diet?

<p>Bulk of food (A)</p> Signup and view all the answers

Which heteropolysaccharide is sulfate free?

<p>Hyaluronic Acid (C)</p> Signup and view all the answers

Which type of disaccharide has a free anomeric carbon in the second sugar unit?

<p>Maltose (A)</p> Signup and view all the answers

What functional groups do Aldose-Ketose Isomers differ in?

<p>Aldehyde and Ketone groups (D)</p> Signup and view all the answers

For what purpose is cellulose important in the diet?

<p>Increasing the bulk of food (C)</p> Signup and view all the answers

Which type of disaccharide is formed of fructose and glucose and has both anomeric carbons involved in the linkage?

<p>Sucrose (C)</p> Signup and view all the answers

Which classification of carbohydrates contains 3-10 sugar units?

<p>Oligosaccharides (C)</p> Signup and view all the answers

How are monosaccharides classified based on the number of carbon atoms?

<p>Trioses, Tetroses, Pentoses, Hexoses (D)</p> Signup and view all the answers

According to the presence of aldehyde or ketone group, how are monosaccharides divided?

<p>By the functional group (C)</p> Signup and view all the answers

Which heteropolysaccharide is sulfate free?

<p>Keratan sulfate (B)</p> Signup and view all the answers

Which type of disaccharide has both anomeric carbons involved in the linkage?

<p>Sucrose (C)</p> Signup and view all the answers

What is the chief storage form of carbohydrates in plants?

<p>Starch (C)</p> Signup and view all the answers

Which heteropolysaccharide is sulfate free?

<p>Hyaluronic Acid (B)</p> Signup and view all the answers

How are monosaccharides classified based on the number of carbon atoms?

<p>By the number of sugar units (D)</p> Signup and view all the answers

For what purpose is cellulose important in the diet?

<p>To increase bulk of food (C)</p> Signup and view all the answers

What is the storage form of carbohydrates in animals, mainly present in skeletal muscles and liver?

<p>Glycogen (C)</p> Signup and view all the answers

Which type of isomers differ in their functional groups?

<p>Aldose-Ketose Isomers (D)</p> Signup and view all the answers

What functional groups do Aldose-Ketose Isomers differ in?

<p>Ketone and Aldehyde (D)</p> Signup and view all the answers

Which type of disaccharide has a free anomeric carbon in the second sugar unit?

<p>Maltose (C)</p> Signup and view all the answers

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Study Notes

Carbohydrate Structure

  • Carbohydrates are made of carbon, hydrogen, and oxygen atoms.
  • Carbohydrates are classified based on the number of sugar units: monosaccharides, disaccharides, oligosaccharides, and polysaccharides.

Monosaccharides

  • Monosaccharides are classified based on the number of carbon atoms: trioses (3 carbon atoms), tetroses (4 carbon atoms), pentoses (5 carbon atoms), hexoses (6 carbon atoms), and heptoses (7 carbon atoms).
  • Monosaccharides are divided based on the presence of aldehyde or ketone group: aldoses (aldehyde group) and ketoses (ketone group).
  • Aldose-ketose isomers differ in their functional groups: aldehyde and ketone.

Disaccharides

  • Sucrose is a type of disaccharide that has both anomeric carbons involved in the linkage.
  • Sucrose is formed of fructose and glucose.

Polysaccharides

  • Polysaccharides are classified based on the number of sugar units: oligosaccharides (3-10 sugar units) and polysaccharides (more than 10 sugar units).
  • Starch is the chief storage form of carbohydrates in plants.
  • Glycogen is the storage form of carbohydrates in animals, mainly present in skeletal muscles and liver.

Importance of Carbohydrates

  • Cellulose is important in the diet for its fiber content, providing bulk to stools and preventing constipation.
  • Chitin is a heteropolysaccharide that is sulfate-free.

Isomers

  • Functional group isomers differ in their functional groups.

Note: I have removed the duplicate questions and reorganized the notes to group similar topics together.

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