Biochemistry

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Biochemistry MCQ & Objective Questions

Biochemistry is a crucial subject for students aspiring to excel in their school exams and competitive tests. Understanding the biochemical processes that underpin life is essential for scoring well. Practicing MCQs and objective questions in Biochemistry not only enhances your grasp of the subject but also boosts your confidence during exams. Engaging with these practice questions helps in identifying important concepts and prepares you effectively for various assessments.

What You Will Practise Here

  • Fundamental concepts of biomolecules: carbohydrates, proteins, lipids, and nucleic acids.
  • Metabolic pathways: glycolysis, Krebs cycle, and oxidative phosphorylation.
  • Enzyme kinetics and regulation: understanding enzyme activity and factors affecting it.
  • Cellular respiration and photosynthesis: key processes in energy production.
  • Biochemical techniques: chromatography, electrophoresis, and spectrophotometry.
  • Genetic information flow: DNA replication, transcription, and translation.
  • Important biochemical equations and their applications in real-life scenarios.

Exam Relevance

Biochemistry is a significant part of the curriculum for CBSE, State Boards, NEET, and JEE. It often appears in the form of direct questions, application-based scenarios, and conceptual MCQs. Students can expect questions that assess their understanding of metabolic pathways, enzyme functions, and the role of biomolecules in living organisms. Familiarity with common question patterns, such as multiple-choice questions that require critical thinking, is essential for success in these exams.

Common Mistakes Students Make

  • Confusing the structures and functions of different biomolecules.
  • Misunderstanding metabolic pathways and their regulatory mechanisms.
  • Neglecting the importance of diagrams and flowcharts in explaining biochemical processes.
  • Overlooking the significance of enzyme kinetics in practical applications.

FAQs

Question: What are some effective ways to study Biochemistry for exams?
Answer: Focus on understanding key concepts, practice MCQs regularly, and use diagrams to visualize processes.

Question: How can I improve my performance in Biochemistry MCQs?
Answer: Regular practice of objective questions and reviewing common mistakes will enhance your exam readiness.

Start solving Biochemistry MCQs today to test your understanding and solidify your knowledge. Remember, consistent practice is the key to mastering this vital subject and achieving your academic goals!

Q. Which of the following is a limitation of UV luminance spectroscopy?
  • A. High sensitivity to light
  • B. Limited to visible light analysis
  • C. Interference from other substances
  • D. Requires expensive equipment
Q. Which of the following is a primary application of FTIR spectroscopy in medicine?
  • A. Blood glucose monitoring
  • B. Tissue characterization
  • C. X-ray imaging
  • D. Ultrasound diagnostics
Q. Which of the following is a property of water that is crucial for life?
  • A. High density
  • B. Low specific heat
  • C. Universal solvent
  • D. Inert nature
Q. Which of the following is a simple carbohydrate?
  • A. Starch
  • B. Glycogen
  • C. Glucose
  • D. Cellulose
Q. Which of the following is an example of an allosteric inhibitor?
  • A. ATP
  • B. Citrate
  • C. ADP
  • D. NADH
Q. Which of the following is NOT a characteristic of allosteric enzymes?
  • A. Sigmoidal kinetics
  • B. Cooperativity
  • C. Michaelis-Menten kinetics
  • D. Regulation by effectors
Q. Which of the following is NOT a characteristic of antigens?
  • A. They can be proteins or polysaccharides
  • B. They are always harmful to the body
  • C. They can be recognized by the immune system
  • D. They can be found on pathogens
Q. Which of the following is NOT a characteristic of enzymes?
  • A. They are proteins
  • B. They are consumed in reactions
  • C. They lower activation energy
  • D. They are specific to substrates
Q. Which of the following is NOT a characteristic of peptides?
  • A. They are made of amino acids
  • B. They can form complex three-dimensional structures
  • C. They are always larger than proteins
  • D. They can have biological activity
Q. Which of the following is NOT a common type of gas chromatography?
  • A. Capillary gas chromatography
  • B. Packed column gas chromatography
  • C. Supercritical fluid chromatography
  • D. Gas-solid chromatography
Q. Which of the following is NOT a component of a typical PCR reaction?
  • A. Template DNA
  • B. Primers
  • C. Nucleotides
  • D. RNA polymerase
Q. Which of the following is NOT a component of the adaptive immune system?
  • A. B cells
  • B. T cells
  • C. Macrophages
  • D. Antibodies
Q. Which of the following is NOT a component of the genetic code?
  • A. Amino acids
  • B. Codons
  • C. Nucleotides
  • D. Proteins
Q. Which of the following is NOT a component of the lac operon?
  • A. Promoter
  • B. Operator
  • C. Repressor
  • D. Enhancer
Q. Which of the following is NOT a component of the ribosome?
  • A. rRNA
  • B. tRNA
  • C. Proteins
  • D. mRNA
Q. Which of the following is NOT a function of RNA?
  • A. Protein synthesis
  • B. Genetic information storage
  • C. Catalysis of biochemical reactions
  • D. Regulation of gene expression
Q. Which of the following is NOT a product of glycolysis?
  • A. NADH
  • B. ATP
  • C. FADH2
  • D. Pyruvate
Q. Which of the following is NOT a product of the TCA cycle?
  • A. NADH
  • B. FADH2
  • C. ATP
  • D. Glucose
Q. Which of the following is NOT a source of carbohydrates?
  • A. Fruits
  • B. Vegetables
  • C. Meat
  • D. Grains
Q. Which of the following macromolecules can act as enzymes?
  • A. Carbohydrates
  • B. Lipids
  • C. Proteins
  • D. Nucleic acids
Q. Which of the following modifications can occur to mRNA before it is translated?
  • A. 5' capping
  • B. 3' polyadenylation
  • C. RNA splicing
  • D. All of the above
Q. Which of the following mutations can lead to a change in the amino acid sequence?
  • A. Silent mutation
  • B. Missense mutation
  • C. Nonsense mutation
  • D. All of the above
Q. Which of the following nucleotides is NOT found in RNA?
  • A. Adenine
  • B. Cytosine
  • C. Thymine
  • D. Uracil
Q. Which of the following processes occurs after transcription in eukaryotic cells?
  • A. Translation
  • B. Replication
  • C. RNA splicing
  • D. DNA repair
Q. Which of the following statements about enzymes is true?
  • A. Enzymes can work on any substrate
  • B. Enzymes are specific to their substrates
  • C. Enzymes do not require cofactors
  • D. Enzymes are only found in humans
Q. Which of the following statements about oxidative phosphorylation is true?
  • A. It occurs in the cytoplasm
  • B. It requires oxygen
  • C. It produces lactic acid
  • D. It is independent of the electron transport chain
Q. Which of the following techniques is commonly used to determine the sequence of amino acids in a peptide?
  • A. Nuclear magnetic resonance (NMR)
  • B. Mass spectrometry
  • C. X-ray crystallography
  • D. Electrophoresis
Q. Which of the following techniques is used to introduce recombinant DNA into host cells?
  • A. Electroporation
  • B. PCR
  • C. Gel electrophoresis
  • D. Western blotting
Q. Which organism is often used as a host for cloning in recombinant DNA technology?
  • A. Bacteria
  • B. Fungi
  • C. Plants
  • D. Animals
Q. Which pathway is activated during prolonged fasting to provide energy?
  • A. Glycolysis
  • B. Fatty acid oxidation
  • C. Gluconeogenesis
  • D. Pentose phosphate pathway
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