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Olympiad Test: Cell - The Fundamental Unit of Life- 1 - Class 9 MCQ


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15 Questions MCQ Test - Olympiad Test: Cell - The Fundamental Unit of Life- 1

Olympiad Test: Cell - The Fundamental Unit of Life- 1 for Class 9 2024 is part of Class 9 preparation. The Olympiad Test: Cell - The Fundamental Unit of Life- 1 questions and answers have been prepared according to the Class 9 exam syllabus.The Olympiad Test: Cell - The Fundamental Unit of Life- 1 MCQs are made for Class 9 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Olympiad Test: Cell - The Fundamental Unit of Life- 1 below.
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Olympiad Test: Cell - The Fundamental Unit of Life- 1 - Question 1
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Who proposed the cell theory?

Detailed Solution for Olympiad Test: Cell - The Fundamental Unit of Life- 1 - Question 1
Cell theory was proposed by a German botanist, Matthias Schleiden, and English zoologist, Theodor Schwann in the year 1839. The cell theory states

• Cells are the building blocks of living organisms.

• All living organisms are composed of cells and a cell is the basic structural and functional unit

• All cells arise from pre-existing cells.

Olympiad Test: Cell - The Fundamental Unit of Life- 1 - Question 2
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Which of the following has an irregular or variable shape?

Detailed Solution for Olympiad Test: Cell - The Fundamental Unit of Life- 1 - Question 2
Amoeba is a unicellular organism which has an irregular or variable shape.
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Olympiad Test: Cell - The Fundamental Unit of Life- 1 - Question 3
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Genetic material of a eukaryotic cell is contained in

Detailed Solution for Olympiad Test: Cell - The Fundamental Unit of Life- 1 - Question 3
The nucleus is bound with the double membrane in a eukaryotic cell in which most of the genetic material is present. The genetic material contains DNA and RNA.
Olympiad Test: Cell - The Fundamental Unit of Life- 1 - Question 4
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A plant cell is placed in hypotonic solution will
Detailed Solution for Olympiad Test: Cell - The Fundamental Unit of Life- 1 - Question 4
When a cell is placed in the hypotonic medium, water will enter into the cell due to endosmosis and turgor pressure of cell will increase.
Olympiad Test: Cell - The Fundamental Unit of Life- 1 - Question 5
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The longest cell in the human body is
Detailed Solution for Olympiad Test: Cell - The Fundamental Unit of Life- 1 - Question 5
Neurons or nerve cells can be up to 3 feet long. A typical neuron has a cell morphology called soma, hair-like structures called dendrites, and an axon. Neurons are specialized in conveying knowledge throughout the body. The sensory neurons, motor neurons, and interneurons are three types of neurons. Neurons have a membrane built to forward information to other cells.
Olympiad Test: Cell - The Fundamental Unit of Life- 1 - Question 6
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Middle lamella is formed of
Detailed Solution for Olympiad Test: Cell - The Fundamental Unit of Life- 1 - Question 6
The middle lamella is made up of calcium and magnesium pectates. In a mature plant cell, it is the outermost layer of the cell wall. In plants, the pectins form a unified and continuous layer between adjacent cells.
Olympiad Test: Cell - The Fundamental Unit of Life- 1 - Question 7
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Which material is present in bulk in plasma membrane say 75%
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The basic structural framework of the plasma membrane; two back‐to‐back layers made up of three types of lipid molecules—phospholipids, cholesterol, and glycolipids; hydrophilic "heads" face outward and the hydrophobic "tails" face inward. Lipids that contain phosphorus occupies about 75 percent of the plasma membrane.
Olympiad Test: Cell - The Fundamental Unit of Life- 1 - Question 8
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The term ‘cell’ was given by
Detailed Solution for Olympiad Test: Cell - The Fundamental Unit of Life- 1 - Question 8
In the 1660s, Robert Hooke looked through a primitive microscope at a thinly cut piece of cork. He saw a series of walled boxes that reminded him of the tiny rooms, or cellula, occupied by monks. Medical historian Dr. Howard Markel discusses Hooke's coining of the word "cell."
Olympiad Test: Cell - The Fundamental Unit of Life- 1 - Question 9
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Which one of the following is prokaryotic?
Detailed Solution for Olympiad Test: Cell - The Fundamental Unit of Life- 1 - Question 9
Prokaryotic cells are simpler and smaller than eukaryotic cells. These cells lack membrane-bound organelles and true nucleus. Prokaryotic organisms are unicellular organisms, which reproduce through binary fission e.g., bacteria, mycoplasma, and blue-green algae.
Olympiad Test: Cell - The Fundamental Unit of Life- 1 - Question 10
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Nucleolus is a sheet of
Detailed Solution for Olympiad Test: Cell - The Fundamental Unit of Life- 1 - Question 10
The nucleolus contains DNA, RNA and proteins. It is a ribosome factory. Cells from other species often have multiple nucleoli.

Therefore, the correct option is C.

Olympiad Test: Cell - The Fundamental Unit of Life- 1 - Question 11
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Which one of the following is called the powerhouse of the cell?
Detailed Solution for Olympiad Test: Cell - The Fundamental Unit of Life- 1 - Question 11
The energy required for various chemical activities needed for life is released by mitochondria in the form of ATP (Adenosine Triphosphate) molecules. ATP is known as the energy currency of the cell. The body uses the energy stored in ATP for making new chemical compounds and for mechanical work.

Thus, the correct answer is 'Mitochondria'.

Olympiad Test: Cell - The Fundamental Unit of Life- 1 - Question 12
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Which one of the following is called the suicide bag of the cell?
Detailed Solution for Olympiad Test: Cell - The Fundamental Unit of Life- 1 - Question 12
Lysosomes are called suicide bags because in the case of adversity they digest their own cell. They have hydrolytic enzymes that get activated at pH 4.8.
Olympiad Test: Cell - The Fundamental Unit of Life- 1 - Question 13
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The idea ‘omins cellula a cellula’ which means that all living cells arise from pre-existing cells, was given by
Detailed Solution for Olympiad Test: Cell - The Fundamental Unit of Life- 1 - Question 13
Rudolf Virchow modified the cell theory and gave the concept of 'omnis cellula e cellulae' - means new cells develop by division of the pre-existing cells. This is called theory of cell lineage or common ancestry.

So, the correct answer is 'Rudolf Virchow'.

Olympiad Test: Cell - The Fundamental Unit of Life- 1 - Question 14
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A cell placed in hypotonic solution bursts up: It is
Detailed Solution for Olympiad Test: Cell - The Fundamental Unit of Life- 1 - Question 14
The cells of plant, fungi and bacteria can withstand in hypotonic solution without bursting. This is because of cell wall. While animal cell bursts up in hypotonic solution because cell wall is not found.
Olympiad Test: Cell - The Fundamental Unit of Life- 1 - Question 15
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Bulk transport occurs through
Detailed Solution for Olympiad Test: Cell - The Fundamental Unit of Life- 1 - Question 15
Bulk transport occurs through endocytosis and exocytosis. The process by which cell engulfs food is called endocytosis and ejects solid is called exocytosis.
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