Class 11 Biology Biomolecules MCQs with Answers

Class 11 Biology Biomolecules MCQs with Answers provide an invaluable resource for Sainik School aspirants preparing for their biology exams. Tailored to the class 11 biology syllabus, these multiple-choice questions focus on the significant topic of biomolecules. Clear and concise answers enable efficient self-assessment, helping students identify strengths and areas for improvement. A solid understanding of biomolecules is crucial for success, and these MCQs ensure comprehensive comprehension of key principles.

As students gear up for Sainik School entrance exams, practicing these MCQs not only enhances exam readiness but also sharpens analytical and problem-solving skills. The content aligns with the broader goals of Sainik School education, emphasizing a holistic understanding of biomolecular concepts. This resource serves as a strategic tool, assisting students in building a strong foundation for future academic endeavors and meeting the specific requirements of Sainik School biology examinations..

Q113. Which of the following is not a polysaccharide?

1. Lactose
2. Starch
3. Glycogen
4. Dextrin

Q1. Proteins perform many physiological functions. For example, some functions as enzymes. Which of the following
represents an additional function that some proteins discharge?

1. Antibiotics.
2. Pigment conferring colour to skin.
3. Pigments making colours of flowers.
4. Hormones.

Q2. Many elements are found in living organisms either free or in the form of compounds. Which of the following is
not found in living organisms?

1. Silicon.
2. Magnesium.
3. Iron.
4. Sodium.

Q3. Lactose is composed of:

1. Glucose + glucose.
2. Glucose + fructose.
3. Fructose + galactose.
4. Glucose + galactose.

Q4. Spoilage of oil can be detected by which fatty acid?

1. Oleic acid.
2. Linolenic acid.
3. Linoleic acid.
4. Erucic acid.

Q5. Hydrolysis of starch occurs with the help of:

1. Peptidase
2. Amylase
3. Sucrose
4. Lipase

Q6. A polysaccharide, which is synthesized and stored in liver cells, is:

1. Lactose.
2. Galactose.
3. Arabinose.
4. Glycogen.

Q7. The enormous diversity of protein molecules is due mainly to the diversity of:

1. Amino acid sequences within the protein molecule.
2. Peptide bonds.
3. R groups on the amino acids.
4. Amino groups on the amino acids.

Q8. Which group contains biocatalysts?

1. Peptidase, amylase, rennin.
2. Glucose, amino acids, fatty acids.
3. Rhodopsin, pepsin, steapsin.
4. Myosin, oxytocin, adrenalin.

Q9. Which is the first step in analysis of biomolecules?

1. Precipitation.
2. Extraction.
3. Staining.
4. Reagent Reaction.

Q10. How many essential amino acids are known?

1. 20
2. 21
3. 22
4. 23

Q11. The primary structure of a protein molecule has.

1. Two ends.
2. One end.
3. Three ends.
4. No ends.

Q12. Sugars are technically called carbohydrates, referring to the fact that their formulae are only multiple of C(H O).
Hexoses therefore have six carbons, twelve hydrogens and six oxygen atoms. Glucose is a hexose. Choose from
among the following another hexose.

1. Fructose.
2. Erythrose.
3. Ribulose.
4. Ribose.

Q13. When we homogenise any tissue in an acid the acid soluble pool represents.

1. Cytoplasm.
2. Cell membrane.
3. Nucleus.
4. Mitochondria.

Q14. Adenine is:

1. Purine.
2. Pyrimidine.
3. Nucleoside.
4. Nucleotide.

Q15. Which of the following is not a pyrimidine?

1. Uracil
2. Cytosine
3. Guanine
4. Thymine