Skip to main content

PLUS TWO - CHEMISTRY - BIOMOLECULES - IMPORTANT QUESTIONS - CBSE

 
MCQ QUESTIONS - BIOMOLECULES - CHEMISTRY


Carbohydrates

  1. Which of the following is a monosaccharide? (a) Starch (b) Cellulose (c) Glucose (d) Sucrose

  2. What is the glycosidic bond? (a) The bond between two carbon atoms in a carbohydrate molecule (b) The bond between two nitrogen atoms in a protein molecule (c) The bond between two oxygen atoms in a nucleic acid molecule (d) The bond between a carbohydrate and a water molecule

  3. What is the difference between starch and cellulose? (a) Starch is a linear polymer of glucose, while cellulose is a branched polymer of glucose. (b) Starch is a soluble polymer of glucose, while cellulose is an insoluble polymer of glucose. (c) Starch is a reducing sugar, while cellulose is a non-reducing sugar. (d) Starch is found in plants, while cellulose is found in animals.

  4. What is the function of glycogen? (a) To provide energy for muscle contraction (b) To store energy in the liver and muscles (c) To build the cell walls of plants (d) To transport oxygen in the blood

  5. What is the role of enzymes in carbohydrate metabolism? (a) To break down carbohydrates into glucose (b) To synthesize carbohydrates from glucose (c) To regulate the blood sugar level (d) All of the above

ANSWERS

  1. (c) Glucose
  2. (d) The bond between a carbohydrate and a water molecule
  3. (a) Starch is a linear polymer of glucose, while cellulose is a branched polymer of glucose.
  4. (b) To store energy in the liver and muscles
  5. (d) All of the above

Proteins

  1. What are the four main levels of protein structure? (a) Primary, secondary, tertiary, and quaternary (b) Alpha, beta, gamma, and delta (c) A, B, C, and D (d) I, II, III, and IV

  2. What is the difference between a peptide bond and an amide bond? (a) A peptide bond is formed between two amino acids, while an amide bond is formed between an amino acid and a carboxylic acid. (b) A peptide bond is a type of amide bond. (c) A peptide bond is formed between two nitrogen atoms, while an amide bond is formed between a nitrogen atom and a carbon atom. (d) A peptide bond is found in proteins, while an amide bond is found in nucleic acids.

  3. What is the role of enzymes in protein synthesis? (a) To provide the energy for protein synthesis (b) To bring together the amino acids in the correct order (c) To proofread the newly synthesized protein (d) All of the above

  4. What are the six main functions of proteins? (a) Structural, enzymatic, transport, regulatory, storage, and contractile (b) Alpha, beta, gamma, delta, epsilon, and zeta (c) A, B, C, D, E, and F (d) I, II, III, IV, V, and VI

  5. What is the difference between a denatured protein and a native protein? (a) A denatured protein is unfolded, while a native protein is folded. (b) A denatured protein has lost its biological activity, while a native protein has its biological activity. (c) A denatured protein is more soluble in water, while a native protein is less soluble in water. (d) All of the above

ANSWERS
  1. (a) Primary, secondary, tertiary, and quaternary
  2. (b) A peptide bond is a type of amide bond.
  3. (d) All of the above
  4. (a) Structural, enzymatic, transport, regulatory, storage, and contractile
  5. (d) All of the above

Lipids

  1. What are the four main classes of lipids? (a) Fats, oils, waxes, and steroids (b) Alpha, beta, gamma, and delta (c) A, B, C, and D (d) I, II, III, and IV

  2. What is the difference between a saturated fat and an unsaturated fat? (a) A saturated fat has only single bonds between the carbon atoms in its hydrocarbon chain, while an unsaturated fat has at least one double bond between the carbon atoms in its hydrocarbon chain. (b) A saturated fat is solid at room temperature, while an unsaturated fat is liquid at room temperature. (c) A saturated fat is more healthy than an unsaturated fat. (d) All of the above

  3. What is the function of phospholipids? (a) To make up the cell membrane (b) To store energy (c) To transport cholesterol (d) All of the above

  4. What are the three main functions of steroids? (a) To regulate gene expression (b) To synthesize hormones (c) To make up the cell membrane

ANSWERS
  1. (a) Fats, oils, waxes, and steroids
  2. (b) A saturated fat is solid at room temperature, while an unsaturated fat is liquid at room temperature.
  3. (d) All of the above
  4. (b) To synthesize hormones
Labels:
Location: India

Comments

Post a Comment

Popular posts from this blog

100 MCQ - POLITICAL PARTIES - SOCIAL SCIENCE - CBSE

1. Which of the following is a feature of a political party? (a) It has a definite set of goals and objectives. (b) It has a clear ideology or philosophy. (c) It is organized at different levels. (d) All of the above 2. What is the main function of a political party? (a) To contest elections and win power. (b) To articulate the interests of different groups in society. (c) To provide a platform for political participation. (d) All of the above 3. What is the difference between a national party and a regional party? (a) A national party has a presence in all states, while a regional party has a presence in only a few states. (b) A national party has a broader ideology, while a regional party has a narrower ideology. (c) A national party is usually more powerful than a regional party. (d) All of the above 4. What is the role of the Election Commission of India in relation to political parties? (a) It registers political parties and grants them recognition. (b) It allocates symbols to pol...
Post a Comment
Read more

INDIA:LP/UP QUIZ 25 QUESTIONS

What is the capital of India? What is the largest state in India by area? What is the national flower of India? What is the national animal of India? What is the national bird of India? Who was the first Prime Minister of India? What is the date of India's Independence Day? Who is considered the father of the Indian nation? What is the national language of India? What is the most popular religion in India? Which river is considered the lifeline of India? Which mountain range forms the northern border of India? Which desert is located in the western part of India? Which state is known as the "Land of Ten Thousand Lakes"? Which coastal state in India is famous for its beaches and backwaters? Who is the first Indian woman to be awarded the Nobel Prize? Which Indian scientist invented the 'Chandrasekhar Limit'? Which Indian city is known as the "IT Capital of India"? Which Indian space organization is responsible for the country's space program? What is ...
Post a Comment
Read more

Aldehyde, Ketones and Carboxylic Acid - Plus Two - CBSE - Chemistry

  Aldehydes What is the general formula for an aldehyde? The general formula for an aldehyde is R-CHO, where R is any alkyl or aryl group. How can you distinguish between aldehydes and ketones using a chemical test? Tollens' reagent can be used to distinguish between aldehydes and ketones. Aldehydes will react with Tollens' reagent to form a silver mirror, while ketones will not react. Physical Properties What is the boiling point of aldehydes compared to alkanes with the same molecular weight? Aldehydes have higher boiling points than alkanes with the same molecular weight due to the presence of the carbonyl group, which can form hydrogen bonds with other molecules. What is the solubility of aldehydes in water? Low-molecular-weight aldehydes are soluble in water due to their ability to form hydrogen bonds with water molecules. However, solubility decreases as the molecular weight of the aldehyde increases. Chemical Properties How do aldehydes react with nucleophiles? Aldehyde...
Post a Comment
Read more