Biology MCQs

Attempt Biology MCQs from the past papers of PPSC, KPPSC, SPSC, BPSC, and NTS.

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Q 176: Which part of the brain regulates temperature of the body?

A) Cerebellum
B) Cerebrum
C) Hypothalamus
D) None of these

Q 177: The largest part of the human brain is:

A) Medulla oblongata
B) Cerebellum
C) Cerebrum
D) None of these

Q 178: The largest cell in the human body is:

A) Nerve cell
B) Muscle cell
C) Liver cell
D) Kidney cell

Q 179: A nerve cell is called:

A) Nerve cell
B) Dendrite
C) Neuron
D) Reflex

Q 180: What is the percentage of water present in our brain?

A) 75%
B) 85%
C) 95%
D) 73%

Q 181: What is the weight of the average human brain?

A) 1.5 kg
B) 1.9 kg
C) 2.3 kg
D) 2.7 kg

Q 182: The average weight of the male brain is;

A) 44 ounce
B) 48 ounce
C) 49 ounce
D) None of these

Q 183: Human Body communicates through:

A) Brain
B) Nerves
C) Sensors
D) None of these

Q 184: Stimulus intensity is detected in brain by?

A) The number of action potentials per second
B) The threshold potential
C) The amplitude of the action potential
D) The number o f synapses crossed

Q 185: Electrical activity of the brain is measured by:

A) Electroencephalography (EEG)
B) Electrocardiogram (ECG)
C) Electrical activity of the diaphragm
D) None of these

Q 186: Parkinson's disease primarily affects which organ?

A) Brain
B) Heart
C) Lungs
D) Bones

Q 187: Our brain demands the most?

A) Fat
B) Protein
C) Carbohydrates
D) Glucose

Q 188: _____ makes up 14 to 17 percent of the skeleton.

A) Iron
B) Sodium
C) Magnesium
D) Phosphorus

Q 189: Exoskeleton of a marine snail is composed of:

A) Calcium Sulphate
B) Calcium Carbonate
C) Sulphur Dioxide
D) None of these

Q 190: The number of bones in a newborn baby is:

A) 206
B) 300
C) 230
D) 250

Q 191: How many bones are there in an adult human being?

A) 200
B) 201
C) 206
D) None of these

Q 192: How many bones are there in the human hand?

A) 19
B) 22
C) 27
D) 32

Q 193: How many pairs of ribs in human body?

A) 9
B) 19
C) 11
D) 12

Q 194: The Scapula is:

A) Shoulder Bone
B) Knee Bone
C) Scalp Bone
D) None of these

Q 195: The longest and the strongest bone in the human body is:

A) Tibia
B) Pelvis
C) Femur
D) Jaw

Q 196: in the human body, the femur is located in:

A) Arm
B) Leg
C) Hand
D) Head

Q 197: What is the smallest bone in the human body?

A) Femur
B) Stapes
C) Tibia
D) Radius

Q 198: Incisors, Canines, Pre-Molars, and Molars are:

A) Bones in human hand
B) Bines in human feet
C) Types of teeth
D) Eye diseases

Q 199: The hardest thing present in a human body is:

A) Dental enamel
B) Skull bones
C) Ribs
D) None of these

Q 200: The age when wisdom teeth typically emerge is:

A) 17-25 Year
B) 26-35 Year
C) 10-17 Year
D) 36-45 Year