DUHS Sindh MDCAT Past Paper 2024

1. In which part of the brain a set of neurosecretory cells are found that exert control over the anterior pituitary gland by secreting releasing and inhibiting hormones?a) Pons b) Hypothalamus c) Hippocampus d) Amygdala e) Midbrain
2. Frostbites are due to:a) Fluid retention b) Vasodilation c) Muscular expansion d) Vasoconstriction e) Vascular contraction
3. Stimuli such as pressure, touch, stretch, motion affect which of the following receptors?a) Thermoreceptors b) Mechanoreceptors c) Gustatory receptors d) Olfactory receptors e) None of these
4. The situation when two alternative forms is said to have:a) Codominance b) Multiple alleles c) Sex-influenced traits d) Incomplete dominance e) Sex-limited traits
5. Bacterium, with a tuft of flagella present at each of two poles, is called:a) Amphitrichous b) Atrichous c) Lophotrichous d) Peritrichous e) Monotrichous
6. What is the correct order of organelles in ultracentrifugation?a) Ribosome → Nuclei → Mitochondria b) Lysosome → Ribosome → Mitochondria c) Nuclei → Mitochondria → Ribosome d) Mitochondria → Nuclei → Golgi bodies e) Golgi bodies → Ribosome → Nuclei
7. A peptide hormone, released from Sertoli cells, inhibiting secretion of FSH:a) Testosterone b) GnRH c) FSH d) Inhibin e) Luteinizing hormone
8. Name the protein complex which stabilizes separated strands during DNA replication:a) Double-stranded binding proteins b) Double-stranded binding enzymes c) Single-stranded binding proteins d) Single-stranded binding enzyme e) Non-stranded binding proteins
9. Which of the following is not essential for photosynthesis?a) Oxygen b) Chlorophyll c) ATP d) Light e) NADP
10. Proteins which cause disease in humans and animals are called:

a) Prions b) Viroid c) Prophage d) Bacteriophage e) Antigens

11. Which size of sponge can filter an entire residential pool in one day?

a) Tennis ball-sized b) Ladle-sized c) Basketball-sized d) Hockey ball-sized e) Teaspoon-sized

12. Koshland proposed a model for enzyme with the name of “Induced Fit Model” in the year:

a) 1957 b) 1952 c) 1954 d) 1956 e) 1949

13. Why do ribosomes require Mg2+?

a) To synthesize protein b) To transport amino acid to ribosome c) To stabilize the ribosomal structure d) To develop mRNA molecules e) To break down RNA molecules

14. Hemoglobin fails to carry sufficient oxygen, leading to clotting when:

a) Glutamic acid is replaced by Valine at the 3rd position b) Glutamic acid is replaced by Valine at the 6th position c) Glutamic acid is replaced by Valine at the 5th position d) Glutamic acid is replaced by Valine at the 4th position e) Glutamic acid is replaced by Valine at the 2nd position

15. Formation of hard uric acid crystals in the joints is identified as:

a) Rheumatoid arthritis b) Ankylosing spondylitis c) Osteoarthritis d) Callus e) Gout

16. Which virus kills cancer cells and aids immunity?

a) Saccharomyces b) Lactobacillus c) Penicillium d) Lymphobacterium e) Oncolytic

17. The pigment in the muscles responsible for the binding of oxygen is:

a) Oxyhemoglobin b) Plasmin c) Myoglobin d) Heme e) Hemoglobin

18. In Gram-negative bacteria, the peptidoglycan layer is:

a) Thick b) Moderate c) Thin d) Entangled e) Perforated

19. The human enzymes are highly active at about:

a) 8°C b) 15°C c) 37°C d) 45°C e) 55°C

20. The locomotion in segmented worms is brought about by:

a) True pods b) Pseudopodia c) Segmented appendages d) Peritrichous flagella e) Cilia

21. The type of carbohydrates, made up of 6 to 10 monosaccharides, which are comparatively less sweet in taste and less soluble in water, are called:

a) Oligosaccharides b) Monosaccharides c) Starch d) Cellulose e) Polysaccharides

22. This technique is used to determine the growth of bacteria, rate of photosynthesis, and minute quantity of DNA:

a) Electrophoresis b) Micrometry c) Microscopy d) Chromatography e) Spectrophotometry

23. Which of the following is an example of a sub-viral particle that infects plants?

a) Prion b) Viroid c) Bacteriophage d) Infectious protein e) Oncovirus

24. In heterotrophs, during digestion, macromolecules are broken down with the help of:

a) Chymosin b) Gastrin c) Rennin d) Hydrolytic enzymes e) Endonuclease

25. Animals that have a ladder-type nervous system consisting of two nerve cords and connecting nerves belong to the phylum:

a) Protozoa b) Coelenterata c) Cnidaria d) Porifera e) Platyhelminthes

26. The term ‘eye spots’ is used by:

a) Darwin b) Lamarck c) Friedrich Wilhelm Kuhn d) Mendel e) Thomas Cech

27. The type of muscle found in the walls of internal organs is:

a) Skeletal muscle b) Smooth muscle c) Cardiac muscle d) Voluntary muscle e) None of these

28. The longest bone in the human body is:

a) Femur b) Tibia c) Fibula d) Humerus e) Radius

29. Which of the following is responsible for carrying oxygen in blood?

a) Hemoglobin b) Myoglobin c) Plasma d) White blood cells e) Platelets

30. The smallest functional unit of the kidney is:

a) Nephron b) Glomerulus c) Loop of Henle d) Collecting duct e) Bowman’s capsule

31. The part of the brain responsible for coordination and balance is:

a) Cerebrum b) Cerebellum c) Medulla Oblongata d) Thalamus e) Hypothalamus

32. The process by which green plants manufacture food using sunlight is called:

a) Respiration b) Photosynthesis c) Transpiration d) Fermentation e) Chemosynthesis

33. Which organ is responsible for detoxification of harmful substances in the body?

a) Heart b) Lungs c) Liver d) Kidney e) Stomach

34. The smallest type of blood vessel in the human body is:

a) Arteries b) Veins c) Capillaries d) Arterioles e) Venules

35. The type of joint found in the human shoulder is:

a) Hinge joint b) Ball and socket joint c) Pivot joint d) Saddle joint e) Gliding joint

36. The primary function of the large intestine is:

a) Digestion of proteins b) Absorption of water c) Breakdown of fats d) Secretion of digestive enzymes e) Production of bile

37. The part of the eye responsible for controlling the amount of light entering is:

a) Retina b) Cornea c) Iris d) Optic nerve e) Pupil

38. The most abundant gas in the Earth’s atmosphere is:

a) Oxygen b) Carbon dioxide c) Nitrogen d) Hydrogen e) Argon

39. The organ responsible for pumping blood throughout the body is:

a) Brain b) Lungs c) Liver d) Heart e) Kidneys

40. The process by which plants lose water vapor from their leaves is called:

a) Transpiration b) Photosynthesis c) Respiration d) Evaporation e) Condensation

41. The unit of measurement for energy in the SI system is:

a) Joule b) Calorie c) Watt d) Volt e) Ampere

42. The organ that produces insulin in the human body is:

a) Liver b) Pancreas c) Stomach d) Kidney e) Gallbladder

43. The smallest bone in the human body is located in the:

a) Ear b) Hand c) Foot d) Nose e) Spine

44. The powerhouse of the cell is:

a) Nucleus b) Mitochondria c) Ribosome d) Golgi apparatus e) Endoplasmic reticulum

45. The scientific study of the classification of organisms is called:

a) Ecology b) Taxonomy c) Anatomy d) Physiology e) Cytology

46. The part of the brain that regulates body temperature is:

a) Medulla oblongata b) Cerebellum c) Cerebrum d) Hypothalamus e) Pons

47. The human body’s primary source of energy is:

a) Proteins b) Carbohydrates c) Fats d) Vitamins e) Minerals

48. Which gas is most responsible for the greenhouse effect?

a) Oxygen b) Nitrogen c) Carbon dioxide d) Hydrogen e) Ozone

49. Which part of the blood is responsible for clotting?

a) Red blood cells b) White blood cells c) Platelets d) Plasma e) Hemoglobin

50. The type of energy stored in food is:

a) Kinetic energy b) Potential energy c) Chemical energy d) Nuclear energy e) Thermal energy

51. The type of blood cell responsible for fighting infections is:

a) Red blood cells b) White blood cells c) Platelets d) Plasma e) Hemoglobin

52. The structure that connects muscles to bones is called:

a) Ligament b) Tendon c) Cartilage d) Synovial fluid e) Joint capsule

53. The vitamin necessary for blood clotting is:

a) Vitamin A b) Vitamin B c) Vitamin C d) Vitamin D e) Vitamin K

54. The organ responsible for filtering waste from the blood is:

a) Liver b) Kidney c) Stomach d) Intestine e) Pancreas

55. The element required for the formation of hemoglobin is:

a) Calcium b) Iron c) Zinc d) Potassium e) Sodium

56. The enzyme responsible for the breakdown of starch is:

a) Lipase b) Protease c) Amylase d) Maltase e) Lactase

57. The human body’s largest organ is:

a) Heart b) Brain c) Liver d) Skin e) Lungs

58. The fluid that lubricates and cushions joints is called:

a) Bile b) Synovial fluid c) Plasma d) Cerebrospinal fluid e) Lymph

59. The hormone responsible for regulating blood sugar levels is:

a) Insulin b) Adrenaline c) Glucagon d) Thyroxine e) Cortisol

60. The part of the digestive system where most nutrient absorption takes place is:

a) Stomach b) Small intestine c) Large intestine d) Esophagus e) Liver

61. The part of the brain responsible for memory and learning is:

a) Cerebellum b) Hippocampus c) Medulla oblongata d) Pons e) Thalamus

62. The process of breaking down food into simpler substances is called:

a) Assimilation b) Absorption c) Digestion d) Metabolism e) Respiration

63. The bone that protects the brain is called:

a) Ribcage b) Skull c) Sternum d) Clavicle e) Vertebrae

64. The human body’s first line of defense against infections is:

a) White blood cells b) Antibodies c) Skin d) Lymph nodes e) Red blood cells

65. The smallest unit of life is:

a) Tissue b) Organ c) Cell d) Molecule e) Atom

66. Which gas is essential for human respiration?

a) Oxygen b) Carbon dioxide c) Nitrogen d) Hydrogen e) Ozone

67. The type of joint found in the knee is:

a) Ball and socket b) Hinge c) Pivot d) Saddle e) Gliding

68. The main function of the ribcage is to:

a) Protect the heart and lungs b) Aid digestion c) Support the spinal cord d) Assist in locomotion e) Regulate body temperature

69. The primary function of the kidneys is:

a) Digestion b) Blood circulation c) Filtration of waste d) Oxygen transport e) Hormone production

70. The hormone responsible for the “fight or flight” response is:

a) Insulin b) Adrenaline c) Thyroxine d) Estrogen e) Cortisol

71. The largest planet in the solar system is:

a) Earth b) Mars c) Jupiter d) Saturn e) Neptune

72. The function of red blood cells is to:

a) Fight infections b) Carry oxygen c) Produce antibodies d) Clot blood e) Regulate body temperature

73. Which part of the human body contains the most bones?

a) Skull b) Spine c) Hand d) Leg e) Ribcage

74. The chemical formula for water is:

a) CO2 b) H2O c) O2 d) NaCl e) CH4

75. The part of the flower responsible for producing pollen is:

a) Petal b) Stigma c) Ovary d) Anther e) Sepal

76. The vitamin primarily responsible for vision is:

a) Vitamin A b) Vitamin B c) Vitamin C d) Vitamin D e) Vitamin K

77. The process by which plants convert sunlight into energy is called:

a) Photosynthesis b) Respiration c) Fermentation d) Transpiration e) Digestion

78. The smallest planet in the solar system is:

a) Mercury b) Venus c) Earth d) Mars e) Pluto

79. The structure in the human body responsible for pumping blood is:

a) Liver b) Brain c) Heart d) Lungs e) Kidneys

80. The function of the immune system is to:

a) Digest food b) Transport oxygen c) Fight infections d) Regulate temperature e) Produce energy

81. The basic unit of heredity is:

a) Chromosome b) Gene c) DNA d) RNA e) Nucleotide

82. The layer of the atmosphere where weather occurs is:

a) Stratosphere b) Troposphere c) Mesosphere d) Thermosphere e) Exosphere

83. The metal that is liquid at room temperature is:

a) Iron b) Mercury c) Silver d) Aluminum e) Lead

84. The longest river in the world is:

a) Amazon b) Nile c) Mississippi d) Yangtze e) Danube

85. The hardest natural substance on Earth is:

a) Gold b) Iron c) Diamond d) Quartz e) Ruby

86. The gas responsible for the smell of rotten eggs is:

a) Carbon dioxide b) Hydrogen sulfide c) Methane d) Ammonia e) Nitrogen

87. The process of water changing from liquid to gas is called:

a) Condensation b) Evaporation c) Precipitation d) Transpiration e) Sublimation

88. The organ that stores bile in the human body is:

a) Liver b) Gallbladder c) Pancreas d) Stomach e) Small intestine

89. The SI unit of electric current is:

a) Volt b) Ampere c) Watt d) Ohm e) Coulomb

90. The part of the cell that controls its activities is:

a) Mitochondria b) Nucleus c) Ribosome d) Golgi apparatus e) Cytoplasm

91. The process by which green plants make their own food using sunlight is called:

a) Respiration b) Photosynthesis c) Fermentation d) Transpiration e) Digestion

92. The largest organ inside the human body is:

a) Heart b) Liver c) Kidney d) Lungs e) Stomach

93. The chemical element essential for strong bones and teeth is:

a) Iron b) Calcium c) Sodium d) Potassium e) Zinc

94. The primary function of the human lungs is:

a) Pumping blood b) Filtering toxins c) Absorbing nutrients d) Exchanging oxygen and carbon dioxide e) Producing hormones

95. The part of the human brain that controls emotions is:

a) Medulla oblongata b) Cerebellum c) Hypothalamus d) Amygdala e) Thalamus

96. The blood vessels that carry oxygenated blood away from the heart are:

a) Arteries b) Veins c) Capillaries d) Venules e) Arterioles

97. The process of cell division that produces two identical daughter cells is called:

a) Meiosis b) Mitosis c) Fertilization d) Binary fission e) Cytokinesis

98. The outermost layer of the skin is called:

a) Epidermis b) Dermis c) Hypodermis d) Melanin e) Keratin

99. The force that pulls objects toward the center of the Earth is:

a) Magnetism b) Gravity c) Friction d) Pressure e) Buoyancy

100. The part of the flower that develops into a fruit is:

a) Petal b) Ovary c) Stigma d) Anther e) Sepal

101. The layer of Earth where most earthquakes occur is:

a) Crust b) Mantle c) Outer core d) Inner core e) Lithosphere

102. The blood type known as the universal donor is:

a) A+ b) B+ c) AB+ d) O- e) O+

103. The part of the plant that absorbs water and nutrients from the soil is:

a) Stem b) Leaf c) Root d) Flower e) Seed

104. The largest ocean in the world is:

a) Atlantic Ocean b) Indian Ocean c) Arctic Ocean d) Pacific Ocean e) Southern Ocean

105. The chemical element required for respiration in animals is:

a) Carbon b) Hydrogen c) Oxygen d) Nitrogen e) Helium

106. The process by which water moves up a plant through the xylem is called:

a) Transpiration b) Photosynthesis c) Respiration d) Osmosis e) Capillary action

107. The first element in the periodic table is:

a) Oxygen b) Hydrogen c) Helium d) Nitrogen e) Carbon

108. The process by which plants release oxygen into the atmosphere is called:

a) Photosynthesis b) Respiration c) Transpiration d) Fermentation e) Digestion

109. The energy in food is measured in:

a) Watts b) Joules c) Calories d) Newtons e) Volts

110. The gas used in the process of respiration in humans is:

a) Oxygen b) Nitrogen c) Carbon dioxide d) Helium e) Hydrogen

111. The part of the eye that focuses light onto the retina is:

a) Cornea b) Lens c) Pupil d) Iris e) Optic nerve

112. The largest continent on Earth is:

a) Africa b) Asia c) Europe d) North America e) Antarctica

113. The organ that produces bile to help digest fats is:

a) Stomach b) Liver c) Pancreas d) Small intestine e) Gallbladder

114. The smallest structural and functional unit of life is:

a) Atom b) Molecule c) Organelle d) Cell e) Tissue

115. The Earth’s natural satellite is:

a) Sun b) Moon c) Mars d) Jupiter e) Venus

116. The process by which cells obtain energy from glucose is called:

a) Photosynthesis b) Fermentation c) Cellular respiration d) Transpiration e) Digestion

117. The bones in the human body are connected to each other by:

a) Ligaments b) Tendons c) Cartilage d) Muscles e) Nerves

118. The element that makes up the largest portion of the Earth’s crust is:

a) Oxygen b) Silicon c) Aluminum d) Iron e) Calcium

119. The gas that plants take in for photosynthesis is:

a) Oxygen b) Carbon dioxide c) Nitrogen d) Hydrogen e) Methane

120. The number of chromosomes in a normal human cell is:

a) 23 b) 32 c) 44 d) 46 e) 48

121. The largest artery in the human body is:

a) Carotid artery
b) Pulmonary artery
c) Aorta
d) Femoral artery
e) Coronary artery

122. The powerhouse of the cell is:

a) Nucleus b) Mitochondria c) Ribosome d) Golgi apparatus e) Endoplasmic reticulum

123. The process by which plants lose water vapor from their leaves is:

a) Photosynthesis b) Transpiration c) Respiration d) Condensation e) Evaporation

124. The most common gas in Earth’s atmosphere is:

a) Oxygen b) Carbon dioxide c) Nitrogen d) Hydrogen e) Argon

125. The function of hemoglobin is to:

a) Digest food b) Transport oxygen c) Remove waste d) Carry hormones e) Provide immunity

126. The structure in the human body that protects the lungs and heart is:

a) Skull b) Ribcage c) Pelvis d) Vertebrae e) Sternum

127. The primary function of red blood cells is:

a) Fight infection b) Clot blood c) Carry oxygen d) Transport nutrients e) Produce hormones

128. The type of joint found in the knee is:

a) Ball and socket b) Hinge c) Pivot d) Saddle e) Gliding

129. The largest organ in the human body is:

a) Heart b) Liver c) Lungs d) Skin e) Brain

130. The SI unit of force is:

a) Joule b) Newton c) Pascal d) Watt e) Volt

131. The primary function of the respiratory system is:

a) Circulate blood b) Exchange gases c) Digest food d) Filter waste e) Produce hormones

132. The longest river in the world is:

a) Amazon b) Nile c) Yangtze d) Mississippi e) Congo

133. The hardest natural substance on Earth is:

a) Quartz b) Diamond c) Gold d) Iron e) Sapphire

134. The process by which a liquid changes into a gas is called:

a) Condensation b) Evaporation c) Precipitation d) Freezing e) Sublimation

135. The basic unit of all living organisms is:

a) Atom b) Molecule c) Cell d) Tissue e) Organ

136. The part of the plant that contains seeds is:

a) Leaf b) Stem c) Root d) Flower e) Fruit

137. The layer of the Earth that contains tectonic plates is:

a) Core b) Mantle c) Lithosphere d) Asthenosphere e) Crust

138. The main function of white blood cells is:

a) Carry oxygen b) Fight infection c) Produce energy d) Regulate temperature e) Digest food

139. The device used to measure atmospheric pressure is:

a) Thermometer b) Barometer c) Hygrometer d) Anemometer e) Voltmeter

140. The part of the ear that helps maintain balance is:

a) Cochlea b) Eardrum c) Semicircular canals d) Ossicles e) Pinna

141. The organ in the human body that produces insulin is:

a) Liver
b) Pancreas
c) Stomach
d) Kidney
e) Gallbladder

142. The main function of platelets in the blood is:

a) Oxygen transport b) Clotting c) Fighting infections d) Carrying hormones e) Digesting nutrients

143. The chemical formula for table salt is:

a) H2O b) CO2 c) NaCl d) O2 e) CH4

144. The smallest planet in our solar system is:

a) Venus b) Earth c) Mercury d) Mars e) Pluto

145. The outermost layer of the Earth is called:

a) Core b) Mantle c) Crust d) Lithosphere e) Asthenosphere

146. The chemical element that gives blood its red color is:

a) Calcium b) Zinc c) Iron d) Magnesium e) Sodium

147. The process by which plants take in carbon dioxide and release oxygen is:

a) Respiration b) Photosynthesis c) Fermentation d) Transpiration e) Digestion

148. The structure in cells responsible for protein synthesis is:

a) Nucleus b) Mitochondria c) Ribosome d) Golgi apparatus e) Endoplasmic reticulum

149. The human body’s center of intelligence and reasoning is:

a) Cerebellum b) Brainstem c) Cerebrum d) Medulla e) Hypothalamus

150. The human body maintains a constant internal environment through a process called:

a) Metabolism b) Homeostasis c) Digestion d) Circulation e) Respiration

151. The fluid that surrounds and protects the brain and spinal cord is:

a) Synovial fluid b) Plasma c) Cerebrospinal fluid d) Lymph e) Bile

152. The part of the digestive system responsible for absorbing most nutrients is:

a) Stomach b) Large intestine c) Small intestine d) Liver e) Pancreas

153. The part of the flower that receives pollen during fertilization is:

a) Stigma b) Petal c) Sepal d) Ovule e) Anther

154. The gas that contributes the most to global warming is:

a) Oxygen b) Nitrogen c) Carbon dioxide d) Hydrogen e) Ozone

155. The process of breaking down glucose to release energy is called:

a) Photosynthesis b) Fermentation c) Glycolysis d) Transpiration e) Digestion

156. The part of the human skeleton that protects the heart and lungs is:

a) Skull b) Ribcage c) Spine d) Pelvis e) Femur

157. The hormone that regulates the sleep-wake cycle is:

a) Insulin b) Adrenaline c) Melatonin d) Cortisol e) Serotonin

158. The function of the kidneys is to:

a) Regulate body temperature b) Filter waste from the blood c) Produce hormones d) Aid digestion e) Transport oxygen

159. The type of rock formed by cooling magma is called:

a) Sedimentary rock b) Igneous rock c) Metamorphic rock d) Fossil rock e) Granite

160. The blood vessels that carry blood to the heart are:

a) Arteries b) Veins c) Capillaries d) Aorta e) Venules

The type of blood cell responsible for fighting infections is:

a) Red blood cells b) White blood cells c) Platelets d) Plasma e) Hemoglobin

162. The structure that connects muscles to bones is called:

a) Ligament b) Tendon c) Cartilage d) Synovial fluid e) Joint capsule

163. The vitamin necessary for blood clotting is:

a) Vitamin A b) Vitamin B c) Vitamin C d) Vitamin D e) Vitamin K

164. The organ responsible for filtering waste from the blood is:

a) Liver b) Kidney c) Stomach d) Intestine e) Pancreas

165. The element required for the formation of hemoglobin is:

a) Calcium b) Iron c) Zinc d) Potassium e) Sodium

166. The enzyme responsible for the breakdown of starch is:

a) Lipase b) Protease c) Amylase d) Maltase e) Lactase

167. The human body’s largest organ is:

a) Heart b) Brain c) Liver d) Skin e) Lungs

168. The fluid that lubricates and cushions joints is called:

a) Bile b) Synovial fluid c) Plasma d) Cerebrospinal fluid e) Lymph

169. The hormone responsible for regulating blood sugar levels is:

a) Insulin b) Adrenaline c) Glucagon d) Thyroxine e) Cortisol

170. The part of the digestive system where most nutrient absorption takes place is:

a) Stomach b) Small intestine c) Large intestine d) Esophagus e) Liver

171. The smallest bone in the human body is located in the:

a) Ear b) Hand c) Foot d) Nose e) Spine

172. The powerhouse of the cell is:

a) Nucleus b) Mitochondria c) Ribosome d) Golgi apparatus e) Endoplasmic reticulum

173. The process by which plants lose water vapor from their leaves is:

a) Photosynthesis b) Transpiration c) Respiration d) Condensation e) Evaporation

174. The most common gas in Earth’s atmosphere is:

a) Oxygen b) Carbon dioxide c) Nitrogen d) Hydrogen e) Argon

175. The function of hemoglobin is to:

a) Digest food b) Transport oxygen c) Remove waste d) Carry hormones e) Provide immunity

176. The structure in the human body that protects the lungs and heart is:

a) Skull b) Ribcage c) Pelvis d) Vertebrae e) Sternum

177. The primary function of red blood cells is:

a) Fight infection b) Clot blood c) Carry oxygen d) Transport nutrients e) Produce hormones

178. The type of joint found in the knee is:

a) Ball and socket b) Hinge c) Pivot d) Saddle e) Gliding

179. The largest organ in the human body is:

a) Heart b) Liver c) Lungs d) Skin e) Brain

180. The SI unit of force is:

a) Joule b) Newton c) Pascal d) Watt e) Volt

181. The process by which cells divide to produce identical daughter cells is:

a) Meiosis b) Mitosis c) Binary fission d) Cytokinesis e) Conjugation

182. The longest muscle in the human body is:

a) Biceps b) Sartorius c) Triceps d) Quadriceps e) Deltoid

183. The part of the brain that controls breathing and heart rate is:

a) Cerebrum b) Cerebellum c) Medulla oblongata d) Hypothalamus e) Thalamus

184. The substance responsible for the green color of plants is:

a) Hemoglobin b) Melanin c) Chlorophyll d) Keratin e) Carotene

185. The SI unit of pressure is:

a) Pascal b) Newton c) Joule d) Watt e) Coulomb

186. The largest gland in the human body is:

a) Pituitary gland b) Thyroid gland c) Liver d) Pancreas e) Adrenal gland

187. The blood group known as the universal recipient is:

a) A+ b) B+ c) AB+ d) O+ e) AB-

188. The element that makes up most of the Sun’s mass is:

a) Helium b) Oxygen c) Carbon d) Hydrogen e) Nitrogen

189. The primary function of the human excretory system is:

a) Circulating blood b) Removing waste c) Producing energy d) Absorbing nutrients e) Transporting oxygen

190. The human body’s natural defense against disease is:

a) White blood cells b) Red blood cells c) Platelets d) Plasma e) Enzymes

191. The process by which plants reproduce without seeds is called:

a) Germination b) Photosynthesis c) Asexual reproduction d) Pollination e) Fertilization

192. The type of tissue that connects bones to other bones is:

a) Muscle b) Cartilage c) Ligament d) Tendon e) Synovial fluid

193. The part of the digestive system where protein digestion begins is:

a) Mouth b) Stomach c) Small intestine d) Liver e) Esophagus

194. The smallest unit of an element that retains its chemical properties is:

a) Atom b) Molecule c) Proton d) Electron e) Neutron

195. The hormone responsible for male secondary sexual characteristics is:

a) Estrogen b) Progesterone c) Testosterone d) Insulin e) Cortisol

196. The part of the eye that detects light is:

a) Cornea b) Pupil c) Retina d) Optic nerve e) Lens

197. The process by which plants convert carbon dioxide and water into glucose and oxygen is:

a) Respiration b) Photosynthesis c) Fermentation d) Transpiration e) Digestion

198. The most abundant element in the human body is:

a) Carbon b) Oxygen c) Hydrogen d) Nitrogen e) Calcium

199. The part of the ear that helps transmit sound vibrations is:

a) Cochlea b) Eardrum c) Semicircular canals d) Ossicles e) Pinna

200. The strongest muscle in the human body based on its size is:

a) Biceps b) Masseter c) Quadriceps d) Deltoid e) Sartorius

DUHS Sindh MDCAT Past Paper 2024 Answer Key

No.	Asnwer	No.	Asnwer	No.	Asnwer

1

Hypothalamus

2

Vasoconstriction

3

Mechanoreceptors

4

Codominance

5

Amphitrichous

6

Nuclei → Mitochondria → Ribosome

7

Inhibin

8

Single-stranded binding proteins

9

Oxygen

10

Prions

11

Basketball-sized

12

1957

13

To stabilize the ribosomal structure

14

Glutamic acid is replaced by Valine at the 6th position

15

Gout

16

Oncolytic

17

Myoglobin

18

Thin

19

37°C

20

Segmented appendages

21

Oligosaccharides

22

Spectrophotometry

23

Viroid

24

Hydrolytic enzymes

25

Platyhelminthes

26

Darwin

27

Smooth muscle

28

Femur

29

Hemoglobin

30

Nephron

31

Cerebellum

32

Photosynthesis

33

Liver

34

Capillaries

35

Ball and socket joint

36

Absorption of water

37

Iris

38

Nitrogen

39

Heart

40

Transpiration

41

Joule

42

Pancreas

43

Ear

44

Mitochondria

45

Taxonomy

46

Hypothalamus

47

Carbohydrates

48

Carbon dioxide

49

Platelets

50

Chemical energy

51

White blood cells

52

Tendon

53

Vitamin K

54

Kidney

55

Iron

56

Amylase

57

Skin

58

Synovial fluid

59

Insulin

60

Small intestine

61

Hippocampus

62

Digestion

63

Skull

64

Skin

65

Cell

66

Oxygen

67

Hinge joint

68

Protect the heart and lungs

69

Filtration of waste

70

Adrenaline

71

Jupiter

72

Carry oxygen

73

Hand

74

H2O

75

Anther

76

Vitamin A

77

Photosynthesis

78

Mercury

79

Heart

80

Fight infections

81

Gene

82

Troposphere

83

Mercury

84

Nile

85

Diamond

86

Hydrogen sulfide

87

Evaporation

88

Gallbladder

89

Ampere

90

Nucleus

91

Photosynthesis

92

Liver

93

Calcium

94

Exchanging oxygen and carbon dioxide

95

Amygdala

96

Arteries

97

Mitosis

98

Epidermis

99

Gravity

100

Ovary

101

Crust

102

O-

103

Root

104

Pacific Ocean

105

Oxygen

106

Capillary action

107

Hydrogen

108

Photosynthesis

109

Calories

110

Oxygen

111

Lens

112

Asia

113

Liver

114

Cell

115

Moon

116

Cellular respiration

117

Ligaments

118

Oxygen

119

Carbon dioxide

120

46

121

Aorta

122

Mitochondria

123

Transpiration

124

Nitrogen

125

Transport oxygen

126

Ribcage

127

Carry oxygen

128

Hinge

129

Skin

130

Newton

131

Exchange gases

132

Nile

133

Diamond

134

Evaporation

135

Cell

136

Fruit

137

Lithosphere

138

Fight infection

139

Barometer

140

Semicircular canals

141

Pancreas

142

Clotting

143

NaCl

144

Mercury

145

Crust

146

Iron

147

Photosynthesis

148

Ribosome

149

Cerebrum

150

Homeostasis

151

Cerebrospinal fluid

152

Small intestine

153

Stigma

154

Carbon dioxide

155

Glycolysis

156

Ribcage

157

Melatonin

158

Filter waste from the blood

159

Igneous rock

160

Veins

161

White blood cells

162

Tendon

163

Vitamin K

164

Kidney

165

Iron

166

Amylase

167

Skin

168

Synovial fluid

169

Insulin

170

Small intestine

171

Stapes (Ear)

172

Mitochondria

173

Transpiration

174

Nitrogen

175

Transport oxygen

176

Ribcage

177

Carry oxygen

178

Hinge joint

179

Skin

180

Newton

181

Mitosis

182

Sartorius

183

Medulla oblongata

184

Chlorophyll

185

Pascal

186

Liver

187

AB+

188

Hydrogen

189

Removing waste

190

White blood cells

191

Asexual reproduction

192

Ligament

193

Stomach

194

Atom

195

Testosterone

196

Retina

197

Photosynthesis

198

Oxygen

199

Ossicles

200

Masseter

–

–