Biology PKMCQs solved with answers. Covering key topics for NTS, FPSC, PPSC, and ETEA, these solved MCQs help you strengthen your biology knowledge.
Biology Pkmcqs solved with answer:
51. The part of the eye that controls the amount of light entering is:
a) Retina
b) Cornea
c) Pupil ✅
d) Lens
52. Which part of the human ear is responsible for balance?
a) Cochlea
b) Eustachian tube
c) Semicircular canals ✅
d) Tympanic membrane
53. The fluid that lubricates joints is called:
a) Plasma
b) Cerebrospinal fluid
c) Synovial fluid ✅
d) Bile
54. The process of breaking down food into simpler molecules is called:
a) Digestion ✅
b) Respiration
c) Excretion
d) Photosynthesis
55. The largest organ inside the human body is:
a) Heart
b) Brain
c) Liver ✅
d) Stomach
56. Which type of RNA carries amino acids to the ribosome?
a) mRNA
b) tRNA ✅
c) rRNA
d) hnRNA
57. The blood vessel that carries oxygenated blood from the lungs to the heart is:
a) Pulmonary vein ✅
b) Pulmonary artery
c) Aorta
d) Vena cava
58. The organ responsible for filtering waste from the blood is:
a) Liver
b) Kidney ✅
c) Pancreas
d) Spleen
59. The process by which a cell engulfs solid particles is called:
a) Diffusion
b) Osmosis
c) Phagocytosis ✅
d) Pinocytosis
60. The genetic material found in viruses is:
a) DNA
b) RNA
c) Either DNA or RNA ✅
d) Both DNA and RNA
61. The main function of the lymphatic system is:
a) Oxygen transport
b) Digestion
c) Immunity ✅
d) Hormone regulation
62. Which of the following is a type of connective tissue?
a) Muscle
b) Bone ✅
c) Skin
d) Epithelium
63. The process of cell division that produces gametes is called:
a) Mitosis
b) Binary fission
c) Meiosis ✅
d) Budding
64. The main function of hemoglobin is to:
a) Digest food
b) Transport oxygen ✅
c) Clot blood
d) Produce energy
65. Which organ system includes the brain and spinal cord?
a) Circulatory system
b) Nervous system ✅
c) Digestive system
d) Respiratory system
66. The tube that connects the kidney to the bladder is:
a) Urethra
b) Ureter ✅
c) Esophagus
d) Fallopian tube
67. Which vitamin is essential for blood clotting?
a) Vitamin A
b) Vitamin B
c) Vitamin C
d) Vitamin K ✅
68. The deficiency of iodine causes:
a) Rickets
b) Scurvy
c) Goiter ✅
d) Anemia
69. The muscle that separates the chest from the abdomen is:
a) Pectoral muscle
b) Diaphragm ✅
c) Abdominal muscle
d) Intercostal muscle
70. The major site of protein synthesis in a cell is:
a) Nucleus
b) Mitochondria
c) Ribosomes ✅
d) Lysosomes
71. The function of the large intestine is:
a) Nutrient absorption
b) Water absorption ✅
c) Protein digestion
d) Enzyme production
72. The bones of the spine are called:
a) Ribs
b) Vertebrae ✅
c) Femurs
d) Clavicles
73. The enzyme in saliva that digests starch is:
a) Amylase ✅
b) Lipase
c) Pepsin
d) Trypsin
74. The part of the brain that controls voluntary movements is:
a) Cerebellum
b) Medulla oblongata
c) Cerebrum ✅
d) Pons
75. Which type of joint is found in the knee?
a) Ball and socket
b) Hinge ✅
c) Pivot
d) Gliding
76. The storage form of glucose in the human body is:
a) Starch
b) Glycogen ✅
c) Cellulose
d) Lipid
77. The organ that produces insulin is:
a) Liver
b) Kidney
c) Pancreas ✅
d) Spleen
78. The longest muscle in the human body is:
a) Biceps
b) Sartorius ✅
c) Triceps
d) Deltoid
79. The tube that carries sperm from the testes is:
a) Ureter
b) Vas deferens ✅
c) Urethra
d) Fallopian tube
80. The main function of chloroplasts is:
a) Respiration
b) Photosynthesis ✅
c) Protein synthesis
d) Digestion
81. The part of the brain that controls heart rate and breathing is:
a) Cerebrum
b) Cerebellum
c) Medulla oblongata ✅
d) Pons
82. The process by which plants convert nitrogen gas into usable forms is called:
a) Photosynthesis
b) Nitrogen fixation ✅
c) Transpiration
d) Respiration
83. Which macromolecule is the main component of cell membranes?
a) Proteins
b) Carbohydrates
c) Phospholipids ✅
d) Nucleic acids
84. The part of the plant responsible for water absorption is:
a) Stem
b) Root ✅
c) Leaf
d) Flower
85. What is the function of hemoglobin?
a) Digestion
b) Oxygen transport ✅
c) Blood clotting
d) Hormone production
86. The enzyme that breaks down proteins is:
a) Amylase
b) Lipase
c) Pepsin ✅
d) Maltase
87. The fluid that cushions and protects the brain is:
a) Synovial fluid
b) Lymph
c) Cerebrospinal fluid ✅
d) Plasma
88. The storage form of energy in animals is:
a) Starch
b) Glycogen ✅
c) Cellulose
d) Glucose
89. What is the main function of white blood cells?
a) Transport oxygen
b) Fight infections ✅
c) Carry nutrients
d) Store energy
90. The process by which green plants make their own food is called:
a) Respiration
b) Transpiration
c) Photosynthesis ✅
d) Fermentation
91. The largest part of the human brain is:
a) Cerebellum
b) Cerebrum ✅
c) Medulla oblongata
d) Pons
92. The fluid that lubricates joints is:
a) Plasma
b) Bile
c) Synovial fluid ✅
d) Cerebrospinal fluid
93. Which vitamin is essential for vision?
a) Vitamin A ✅
b) Vitamin B
c) Vitamin C
d) Vitamin D
94. The process of excreting sweat from sweat glands is called:
a) Transpiration
b) Perspiration ✅
c) Respiration
d) Secretion
95. The major function of the large intestine is:
a) Nutrient absorption
b) Water absorption ✅
c) Digestion of proteins
d) Secretion of bile
96. The protein that makes up hair and nails is:
a) Collagen
b) Keratin ✅
c) Hemoglobin
d) Elastin
97. The organ that produces bile is:
a) Liver ✅
b) Pancreas
c) Gallbladder
d) Small intestine
98. Which structure in the lungs is responsible for gas exchange?
a) Trachea
b) Bronchi
c) Alveoli ✅
d) Diaphragm
99. The smallest living unit in an organism is:
a) Atom
b) Molecule
c) Cell ✅
d) Tissue
100. The part of the flower that produces pollen is:
a) Ovary
b) Stigma
c) Anther ✅
d) Petal
0 comments:
Post a Comment