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Test: Cell Organization
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10 Questions MCQ Test Science Class 9 | Test: Cell Organization
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Detailed Solution for Test: Cell Organization - Question 1
Nucleus of a cell then it is discovered by scottish botanist Robert brown in 1831. The presence of a nucleus in an atom was discovered and proved by Nobel Laureate Dr. Ernest Rutherford through his gold leaf scattering experiment.
Test: Cell Organization - Question 2
Which of the following substances are not stored in vacuoles?
Detailed Solution for Test: Cell Organization - Question 2
Vacuoles are storage bubbles found in cells. They are present in both plant and animal cells. They store various substances in them such as:
1.Water
2.Enzymes
3.Various small molecules
4.Organic acids
Detailed Solution for Test: Cell Organization - Question 3
Mycoplasma is wall-less smallest living organism.
Test: Cell Organization - Question 4
Name two cell regions containing their own genetic material.
Detailed Solution for Test: Cell Organization - Question 4
Both, mitochondria and plastid possess their own genetic material and ribosomes. The mitochondria DNA and plastid DNA possess genes, which produce the proteins necessary for the functioning of mitochondria and plastids respectively.
Test: Cell Organization - Question 5
Name the plastids in which starch, oils and protein granules are stored?
Detailed Solution for Test: Cell Organization - Question 5
Leucoplasts are cell structures surrounded by a layer of tissue in plant cells. They store starch, oil, and the protein granules. They are a category of plastids. They are colorless as compared to the other plastids like chloroplast. They are located in tissues such as roots, bulbs, and seeds.
Detailed Solution for Test: Cell Organization - Question 6
In science, ATP stands for adenosine triphosphate. This chemical, discovered in the 1920s , is important to life.it stores and releases energy for many cellular process.
Test: Cell Organization - Question 7
Which of the following is not a function of golgi apparatus?
Detailed Solution for Test: Cell Organization - Question 7
A is correct beacause it is the function of ER not golgi apparatus.
Test: Cell Organization - Question 8
Rough endoplasmic reticulum looks rough under a microscope because of
Detailed Solution for Test: Cell Organization - Question 8
The rough endoplasmic reticulum (ER) is called 'rough' because it has organelles called ribosomes attached to the surface.Ribosomes are the organelles that turn mRNA into proteins. These proteins are initially long strings of amino acids. This string has to be folded in the right way to form a functional protein. The rough ER helps with the folding of these amino acid-strings and at the same time prevents their degradation by enzymes in the cell.
Detailed Solution for Test: Cell Organization - Question 9
Green coloured plastics contains chlorophyll. Chloroplast manufacture their food by the process of photosynthesis.
Detailed Solution for Test: Cell Organization - Question 10
Mitochondria is analogous to a power station because mitochondria is responsible for the generation of energy in cells. Hence, mitochondria are also called the power station.
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