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Top 50 Biology Quiz Questions and Answers (MCQ) – Test Your Knowledge

Challenge yourself with our top 50 biology quiz questions and answers designed to test your understanding of life sciences. This quiz covers important topics like cell biology, human anatomy, genetics, plants, ecology, and microorganisms. Whether you're a student preparing for exams or someone who loves learning about biology, this quiz will help you improve your knowledge in a fun and interactive way.

50 questions
1

What is the basic unit of life?

A.Atom
B.Molecule
C.Cell
D.Tissue
2

Which organelle is known as the powerhouse of the cell?

A.Nucleus
B.Mitochondria
C.Ribosome
D.Golgi apparatus
3

DNA stands for?

A.Deoxyribonucleic Acid
B.Ribonucleic Acid
C.Dynamic Nucleic Acid
D.None
4

Which blood cells help in clotting?

A.RBC
B.WBC
C.Platelets
D.Plasma
5

Photosynthesis occurs in which organelle?

A.Mitochondria
B.Chloroplast
C.Nucleus
D.Ribosome
6

What is the largest organ in the human body?

A.Heart
B.Liver
C.Skin
D.Brain
7

Which vitamin is produced in sunlight?

A.Vitamin A
B.Vitamin B
C.Vitamin C
D.Vitamin D
8

Which system controls body activities?

A.Digestive
B.Respiratory
C.Nervous
D.Circulatory
9

What carries oxygen in the blood?

A.Plasma
B.Platelets
C.Hemoglobin
D.WBC
10

Which part of a plant makes food?

A.Root
B.Stem
C.Leaf
D.Flower
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