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solve chemistry important MCQ



     

                                                   CHMISTRY

  GENERAL KNOWLADGE QUESTIONS AND ANSWERS                        

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1) Which of the following is the basic building block of proteins?

A) Monosaccharides

B) Fatty acids

C) Amino acids

D) Nucleotides

Answer: C) Amino acids




2) What type of bond forms between amino acids in a protein?

A) Hydrogen bond

B) Peptide bond

C) Ionic bond

D) Covalent bond

Answer: B) Peptide bond




3) Which enzyme is responsible for synthesising DNA from an RNA template?

A) DNA polymerase

B) RNA polymerase

C) Reverse transcriptase

D) Ligase

Answer: C) Reverse transcriptase




4) Which molecule is known as the 'energy currency' of the cell?

A) Glucose

B) ATP

C) NADH

D) FADH2

Answer: B) ATP




5) What is the primary function of haemoglobin?

A) Digestion

B) Transport of oxygen

C) Immune response

D) Structural support

Answer: B) Transport of oxygen




6) Which organelle is known as the 'powerhouse of the cell'?

A) Nucleus

B) Endoplasmic reticulum

C) Mitochondria

D) Golgi apparatus

Answer: C) Mitochondria




7) What is the end product of glycolysis?

A) Acetyl-CoA

B) Pyruvate

C) Lactate

D) Citrate

Answer: B) Pyruvate




8) Which of the following is a disaccharide?

A) Glucose

B) Fructose

C) Sucrose

D) Galactose

Answer: C) Sucrose




9) In which part of the cell does the citric acid cycle occur?

A) Cytoplasm

B) Mitochondrial matrix

C) Nucleus

D) Endoplasmic reticulum

Answer: B) Mitochondrial matrix




10) Which molecule serves as the main structural component of cell membranes?

A) Proteins

B) Nucleic acids

C) Phospholipids

D) Carbohydrates

Answer: C) Phospholipids




11) Which macromolecule is primarily responsible for storing genetic information?

A) Carbohydrates

B) Lipids

C) Proteins

D) Nucleic acids

Answer: D) Nucleic acids




12) Which process describes the synthesis of RNA from a DNA template?

A) Replication

B) Translation

C) Transcription

D) Transformation

Answer: C) Transcription




13) Which type of RNA carries amino acids to the ribosome for protein synthesis?

A) mRNA

B) rRNA

C) tRNA

D) miRNA

Answer: C) tRNA




14) What is the major component of the extracellular matrix in animals?

A) Collagen

B) Cellulose

C) Starch

D) Chitin

Answer: A) Collagen




15) Which metabolic pathway produces the most ATP?

A) Glycolysis

B) Citric acid cycle

C) Electron transport chain

D) Fermentation

Answer: C) Electron transport chain




16) Which element is central to the structure of haemoglobin and myoglobin?

A) Magnesium

B) Iron

C) Zinc

D) Copper

Answer: B) Iron




17) Which of the following is an example of a polysaccharide?

A) Glucose

B) Fructose

C) Glycogen

D) Sucrose

Answer: C) Glycogen




18) Which enzyme is crucial for DNA replication?

A) RNA polymerase

B) DNA polymerase

C) Helicase

D) Ligase

Answer: B) DNA polymerase




19) Which type of biomolecule is primarily responsible for catalysing metabolic reactions in cells?

A) Carbohydrates

B) Lipids

C) Proteins

D) Nucleic acids

Answer: C) Proteins



20) Which vitamin is essential for the coagulation of blood?

A) Vitamin A

B) Vitamin C

C) Vitamin D

D) Vitamin K


Answer: D) Vitamin K
Location: India

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