1,015 Questions

Biology

Practice Biology MCQs from the Science syllabus.

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ScienceHard
Biology
Genetics

Which of the following nitrogenous bases is a pyrimidine?

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ScienceHard
Biology
Genetics

Which law of Mendel is known as the 'Universal Law of Heredity' because it has no known exceptions in sexually reproducing organisms?

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ScienceHard
Biology
Genetics

What is the phenotypic ratio in a cross between two pink-flowered snapdragons (incomplete dominance)?

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ScienceHard
Biology
Genetics

The term 'Allele' was introduced by:

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ScienceHard
Biology
Genetics

A human female with 47 chromosomes including three X chromosomes ($XXX$) has:

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ScienceHard
Biology
Genetics

Which of the following is the correct order of protein synthesis?

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ScienceEasy
Biology
Cell

Who discovered the cell for the first time in 1665?

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ScienceEasy
Biology
Cell

Which organelle is known as the 'Powerhouse of the cell'?

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ScienceEasy
Biology
Cell

Which of the following is present in a plant cell but absent in an animal cell?

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ScienceEasy
Biology
Cell

The liquid substance present inside the nucleus is called:

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ScienceEasy
Biology
Cell

Which organelle is called the 'Suicidal bag' of the cell?

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ScienceEasy
Biology
Cell

The site of protein synthesis in the cell is:

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ScienceEasy
Biology
Cell

What is the main function of the chloroplast?

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ScienceEasy
Biology
Cell

Which organelle controls all the activities of the cell?

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ScienceEasy
Biology
Cell

Which of the following is a prokaryotic cell?

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ScienceEasy
Biology
Cell

The outermost layer of an animal cell is:

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ScienceEasy
Biology
Cell

A cell that has a well-defined nucleus is called:

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ScienceEasy
Biology
Cell

The movement of water molecules from a region of high concentration to a region of low concentration through a semi-permeable membrane is:

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ScienceEasy
Biology
Cell

Which organelle is mainly responsible for intracellular transport?

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ScienceEasy
Biology
Cell

Which of these is the largest cell in the human body?

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