🧬 Biochemistry Solved MCQs with Answers

Practice 1490 approved 🧬 Biochemistry questions with verified answers from the 🧬 Medical Science subject for Pakistan exams.

1490 solved MCQs

pH can be kept constant with the help of?Answer: Buffer solution The pH of the buffer solution depends upon the concentration of?Answer: Acid (H+-) and conjugate base (-OH-) Pairs of outer shell electrons not used in bonding are called as?Answer: Lone pairs Halogens react with hydrogen gas to form?Answer: Hydrogen halides Glycolysis is also known as?Answer: EMP Pathway _______is an important trace element.Answer: Zinc Which of the following nutrient deficiency causes megaloblastic anaemia?Answer: Folic acid Which of the following signal molecules is not used for extracellular signaling?Answer: Cyclic AMP Which of the following hormones requires a cell surface receptor for its action?Answer: Adrenaline _______is an important mineral nutrient.Answer: Nitrogen Vitamin ______ is needed for the formation of a light-sensitive pigment in the retina.Answer: A Which of the following statements is true about cell signaling?Answer: All of these In ammonium ion, the electrons required between hydrogen ion and nitrogen ion are?Answer: 2 At room temperature, the pH value of pure water is?Answer: 7 The existence of impurities________the freezing point of water.Answer: Decreases The percentage of a sample of HBr decomposes at 430 °C. is?Answer: 0.1 Which of the following ion formation is always exothermic?Answer: Uni-negative Father transfers 'Y' Chromosomes to _____?Answer: son Once the erythrocytes enter the blood in humans, it is estimated that they have an average lifetime of?Answer: 120 days Which of the following is a fat-soluble vitamin?Answer: Vitamin K Which of the following is not used as a nuclear fuel cladding material?Answer: Cadmium Which of the following vitamins serves as a hormone precursor?Answer: Vitamin D Which of the following messenger molecules are derived from Arachidonic acid?Answer: Eicosanoids Extracellular signaling in animals is carried out by?Answer: All of the above _______is a product of aerobic respiration.Answer: Malic acid Alpha-ketoglutarate dehydrogenase results in?Answer: Oxidation and Decarboxylation The condition created due to the deficiency of Niacin is called?Answer: Pellagra Phenyl amine is involved importantly in the synthesis of?Answer: Dyes Amines which are bonded in Alkyl group are?Answer: Tertiary amines The soul of chemistry is dealing with?Answer: Composition and properties of matter