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Biomolecules NEET Questions with Answers

Biomolecules NEET Questions with Answers

Biomolecules NEET Questions with Answers

Biomolecules are essential compounds that play important roles in the structure and function of living organisms. They are broadly categorized into four major types: carbohydrates, proteins, lipids and nucleic acids.

Carbohydrates, like glucose and starch, are primary energy sources. Proteins, composed of amino acids, perform a vast range of functions including enzyme catalysis, transport and structural support. Lipids, such as fats and oils, are important for energy storage and cell membrane structure. Nucleic acids, including DNA and RNA, are responsible for genetic information storage and transfer.

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Biomolecules NEET Questions with Answers

Biomolecules are an important part of the NEET syllabus as they form the foundation for understanding complex biological processes. In the NEET exam, knowledge of biomolecules such as carbohydrates, proteins, lipids, and nucleic acids is essential for grasping how these molecules contribute to the structure and function of living organisms.

Understanding biomolecules also aids in the application of biochemical concepts to medical and health-related scenarios. For example, insights into enzyme functions and metabolic pathways are pivotal for topics like human physiology and biochemistry.

Biomolecules NEET Questions with Answers

Q1. Biomolecules are
A) inorganic materials
B) organic materials
C) all the carbon compounds obtained from the living tissue
D) only DNA and RNA
Answer. C
Q2. After doing the chemical analysis of organic compounds found in living organisms, two fractions were observed namely
A) acid soluble pool and acid insoluble pool
B) carbon pool and hydrogen pool
C) inorganic pool and organic pool
D) aqueous pool and non-aqueous pool
Answer. A
Explanation: (a) After performing the chemical analysis of organic compounds found in living organisms, two types of organic compounds were observed. They were the filtrate fraction or the acid soluble pool and the retentate fraction or the acid insoluble pool.
Q3. The sum total composition of acid soluble and acid insoluble fraction represents the entire composition of
A) dead cells
B) gene pool
C) cellular pool
D) gene library
Answer. C
Q4. Amino acids are organic compounds and are called \(\alpha\)-amino acids. Why ?
A) Amino acids are organic compounds containing an amino group and acidic group as substituents on two different carbons
B) Amino acids are organic compounds containing an amino group and an acidic group as substituents on the same carbon
C) Amino acids are inorganic compounds containing an amino group and acidic group as substituents on two different carbons
D) Amino acids are inorganic compounds containing an amino group and acidic group as substituents on the same carbon
Answer. B
Explanation: (b) Amino acids are said to be organic compounds which contain an amino group and an acidic group as substituents on the same carbon, i.e. the \( \alpha \)-carbon. Hence, these are also called \( \alpha \)-amino acids.
Q5. Variety of amino acids are formed on the basis of
A) position of hydroxyl group
B) position of carboxyl group
C) position of hydrogen
D) nature of R group
Answer. D
Q6. The amino acid, tryptophan is the precursor for the synthesis of
NEET 2016
A) thyroxine and triiodothyronine
B) oestrogen and progesterone
C) cortisol and cortisone
D) melatonin and serotonin
Answer. D
Q7. The aromatic amino acid (s) is/are
A) tyrosine
B) phenylalanine
C) tryptophan
D) All of these
Answer. D
Q8. The R -group in proteinaceous amino acid makes them different. Name the amino acids A-C correctly according to the R groups given in each structure.
A) A - Glycine, B - Serine, C - Alanine
B) A - Alanine, B - Glycine, C - Serine
C) A - Serine, B - Glycine, C - Alanine
D) A - Serine, B - Alanine, C - Glycine
Answer. B
Explanation: (b) The given structures are as follows
A - Alanine - \( \text{R} \) - group is methane.
B - Glycine - \( \text{R} \) - group is hydrogen.
\(\mathrm{C}\) - Serine - R - group is hydroxy methane.
Q9. A fatty acid has a carboxyl group attached to R group. The R group could be a/an
A) methyl
B) ethyl
C) higher number of - \(\mathrm{CH}_{2}\) groups (1 to 19 carbons)
D) All of the above
Answer. D
Q10. Identify the given structure and name the compound.
A) Ribose, Glucose
B) Deoxyribose, Ribose
C) Glucose, Ribose
D) Ribose, Deoxyribose
Answer. C

Enhance your preparation with Arexiq’s Mock Test Series where we provide solutions to various MCQs like we provide in this post “Biomolecules NEET MCQ”. Our expert teachers explain the concepts thoroughly, making it easy for you to understand. We offer many types of questions ensuring a clear grasp of concepts.

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Faqs of Biomolecules

  1. What are the main types of biomolecules?

Answer: The main types of biomolecules are carbohydrates, proteins, lipids and nucleic acids.

2. What is the primary function of proteins?

Answer: Proteins have various functions, including serving as enzymes to speed up biochemical reactions, providing structural support and facilitating transport within and between cells.

  1. Why are nucleic acids important?

Answer: Nucleic acids, such as DNA and RNA, are critical for storing and transmitting genetic information, which is essential for the growth, development and reproduction of organisms.

4. How do biomolecules contribute to health and disease?

Answer: Biomolecules play important roles in maintaining health. For example:

  • Carbohydrates: Essential for energy. Deficiencies or excesses can lead to diabetes.
  • Lipids: Necessary for cell membranes. Imbalances can result in cardiovascular diseases.
  • Proteins: Involved in almost all cellular functions. Deficiencies can lead to conditions like kwashiorkor.
  • Nucleic Acids: Mutations in DNA can lead to genetic disorders.
  1.  Why is understanding biomolecules important for NEET?

Answer: Understanding biomolecules is important for NEET as they are fundamental to many biological processes and systems. Questions related to their structure, function and interactions are frequently included in the exam.

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