Biology Mcqs - Pak Mcqs Point

Most Important Biology Mcqs

1- Who discovered the cell ?

A. Robert Hooke

B. Antonie van Leeuwenhoek

C. Theodor Schwann

D. Matthias Schleiden

View Answer

Answer : A. Robert Hooke

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2- Which organelle is known as the "powerhouse of the cell"?

A. Lysosome

B. Golgi apparatus

C. Ribosome

D. Mitochondria

View Answer

Answer : D. Mitochondria

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3- What is the basic structural and functional unit of life ?

A. Atom

B. Molecule

C. Cell

D. Tissue

View Answer

Answer : C. Cell

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4- Which cell organelle is responsible for protein synthesis ?

A. Ribosomes

B. Mitochondria

C. Lysosomes

D. Nucleus

View Answer

Answer : A. Ribosomes

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5- Which organelle contains digestive enzymes ?

A. Golgi apparatus

B. Lysosome

C. Ribosome

D. Nucleolus

View Answer

Answer : B. Lysosome

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6- DNA is composed of repeating units called:

A. Amino acids

B. Proteins

C. Sugars

D. Nucleotides

View Answer

Answer : D. Nucleotides

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7- Who is known as the "Father of Genetics"?

A. Gregor Mendel

B. Charles Darwin

C. Watson and Crick

D. Alfred Wallace

View Answer

Answer : A. Gregor Mendel

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8- What is the shape of DNA?

A. Single-stranded

B. Linear

C. Double helix

D. Circular

View Answer

Answer : C. Double helix

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9- In humans, how many chromosomes are present ?

A. 22

B. 40

C. 46

D. 66

View Answer

Answer : C. 46

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10- A heterozygous organism has:

A. Two different alleles

B. Two identical alleles

C. Only recessive alleles

D. Only dominant alleles

View Answer

Answer : A. Two different alleles

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11- Which blood group is a universal donor ?

A. A+

B. AB-

C. O-

D. O-

View Answer

Answer : D. O-

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12- What is the largest organ in the human body ?

A. Heart

B. Liver

C. Brain

D. Skin

View Answer

Answer : D. Skin

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13- What is the normal pH of human blood?

A. 6.5

B. 7.4

C. 8.0

D. 5.5

View Answer

Answer : B. 7.4

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14- Which hormone regulates blood sugar levels ?

A. Insulin

B. Adrenaline

C. Thyroxine

D. Estrogen

View Answer

Answer : A. Insulin

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15- The basic functional unit of the kidney is:

A. Nephron

B. Alveolus

C. Neuron

D. Glomerulus

View Answer

Answer : A. Nephron

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16- What is the primary source of energy for life on Earth ?

A. Moon

B. Sun

C. Water

D. Wind

View Answer

Answer : B. Sun

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17- Which gas do plants absorb during photosynthesis ?

A. Oxygen

B. Nitrogen

C. Carbon dioxide

D. Hydrogen

View Answer

Answer : C. Carbon dioxide

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18- What is the term for organisms that produce their own food ?

A. Consumers

B. Decomposers

C. Scavengers

D. Producers

View Answer

Answer : D. Producers

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19- Which biome is characterized by low rainfall and extreme temperatures ?

A. Grassland

B. Tundra

C. Desert

D. Rainforest

View Answer

Answer : C. Desert

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20- The ozone layer protects us from ?

A. UV radiation

B. Infrared rays

C. X-rays

D. Gamma rays

View Answer

Answer : A. UV radiation

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