Biology · Chemistry

Carbohydrates and Biomolecules

1,073 Questions

Carbohydrates and biomolecules questions test your understanding of sugars, monosaccharides, and metabolic substrates. The topic covers food transportation in plants and the biochemical properties of sweeteners. Practicing these questions builds a strong foundation for exam preparation.

Disaccharides and monosaccharidesArtificial sweetenersGlycogen storagePlant food transportGlycoprotein hormones

Carbohydrates and Biomolecules Questions

Multiple choice

Small dextrins are

  1. short-chained branched amylopectin remains

  2. disaccharides formed from two units of glucose with á-(1-4) linkage

  3. disaccharides similar to maltose with á-(1-6) linkage

  4. low weight carbohydrates, produced by the hydrolysis of starch

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

.

Multiple choice

Starch and sugar together are named as

  1. antibodies

  2. proteins

  3. fats

  4. carbohydrates
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Starch and sugars are both classified chemically as carbohydrates, which are one of the three main macronutrients along with proteins and fats. Starch is a complex carbohydrate (polysaccharide) while sugars are simple carbohydrates (monosaccharides and disaccharides). Antibodies are proteins, not related to starch and sugars.

Multiple choice

Which of the following is a pair of ketohexoses?

  1. Mannose and talose

  2. Sorbose and psicose

  3. Arabinose and xylose

  4. Ribulose and xylulose

  5. Erythrose and erythrulose
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Correct answer. Sorbose and psicose are examples of ketohexoses.

Multiple choice

The substances like glucose and starch fall under which of the following categories?

  1. Alcohol

  2. Carbohydrates

  3. Ether

  4. None of these

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Glucose and starch are carbohydrates, which are organic compounds made of carbon, hydrogen, and oxygen. They serve as primary energy sources for living organisms. Alcohol and ether are different types of organic compounds with distinct chemical properties and functions.

Multiple choice

Dextrose is

  1. D-glucose

  2. D-fructose

  3. glycogen

  4. starch
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

D-glucose

Multiple choice

Mannitol is

  1. alcohol

  2. sugar alcohol

  3. polysachacchride

  4. lipid
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

suger alcohol

Multiple choice

Which of the following statement is true?

  1. Starch is water soluble.

  2. Starch is water insoluble.

  3. Starch is a structural polysaccharide.

  4. Starch has glucose linked by beta linkages.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Strach is water insoluble

Multiple choice

Sugarcane juice contains

  1. acetone

  2. alcohol

  3. sucrose

  4. alkane
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Sugarcane juice contains a high concentration of sucrose, which is a disaccharide composed of glucose and fructose. This is the primary sugar extracted for commercial use.

Multiple choice

Carbohydrates are composed of

  1. Carbon, Hydrogen and Nitrogen

  2. Nitrogen, Carbon and Oxygen

  3. Oxygen, Hydrogen and Nitrogen

  4. Carbon, Hydrogen and Oxygen
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A carbohydrate is an organic compound with the empirical formula Cm(H2O)n (where m could be different from n); that is, consists only of carbon, hydrogen, and oxygen, with a hydrogen: oxygen atom ratio of 2 : 1.