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NEET Exam  >  NEET Tests  >  Test: Cells - Prokaryotic and Eukaryotic Cells (May 18) - NEET MCQ

Test: Cells - Prokaryotic and Eukaryotic Cells (May 18) - NEET MCQ


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10 Questions MCQ Test - Test: Cells - Prokaryotic and Eukaryotic Cells (May 18)

Test: Cells - Prokaryotic and Eukaryotic Cells (May 18) for NEET 2024 is part of NEET preparation. The Test: Cells - Prokaryotic and Eukaryotic Cells (May 18) questions and answers have been prepared according to the NEET exam syllabus.The Test: Cells - Prokaryotic and Eukaryotic Cells (May 18) MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Cells - Prokaryotic and Eukaryotic Cells (May 18) below.
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Test: Cells - Prokaryotic and Eukaryotic Cells (May 18) - Question 1
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What is the main defining feature of a prokaryotic cell?

Detailed Solution for Test: Cells - Prokaryotic and Eukaryotic Cells (May 18) - Question 1
Prokaryotic cells are characterized by their single-celled nature. Unlike eukaryotic cells, they do not have a well-defined nucleus or membrane-bound organelles. This simplicity is a key feature of prokaryotes, which represent the most primitive form of life on Earth.
Test: Cells - Prokaryotic and Eukaryotic Cells (May 18) - Question 2
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What is the size range of typical prokaryotic cells?

Detailed Solution for Test: Cells - Prokaryotic and Eukaryotic Cells (May 18) - Question 2
Typical prokaryotic cells range in size from 0.1 to 5.0 ?m in diameter. They are significantly smaller than eukaryotic cells and have a high surface area to volume ratio due to their small size.
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Test: Cells - Prokaryotic and Eukaryotic Cells (May 18) - Question 3
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Which component is responsible for determining the shape of a prokaryotic cell?

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The cell wall is responsible for determining the shape of a prokaryotic cell. It provides structural support and prevents the cell from bursting or collapsing. The three most common shapes of prokaryotic cells are spiral, rod-shaped (bacillus), and spherical or oval (coccus).
Test: Cells - Prokaryotic and Eukaryotic Cells (May 18) - Question 4
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Which of the following is NOT a component of the prokaryotic cell envelope?
Detailed Solution for Test: Cells - Prokaryotic and Eukaryotic Cells (May 18) - Question 4
Mitochondria are not a component of the prokaryotic cell envelope. Prokaryotic cells lack membrane-bound organelles like mitochondria, which are found in eukaryotic cells.
Test: Cells - Prokaryotic and Eukaryotic Cells (May 18) - Question 5
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What is the function of mesosomes in prokaryotic cells?
Detailed Solution for Test: Cells - Prokaryotic and Eukaryotic Cells (May 18) - Question 5
Mesosomes are membranous structures in prokaryotic cells that play a role in DNA replication, among other functions. They help in cell wall formation, respiration, secretion processes, and increase the surface area of the plasma membrane.
Test: Cells - Prokaryotic and Eukaryotic Cells (May 18) - Question 6
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What is the function of flagella and fimbriae in prokaryotic cells?
Detailed Solution for Test: Cells - Prokaryotic and Eukaryotic Cells (May 18) - Question 6
Flagella are involved in motility in some prokaryotic cells, allowing them to move. Fimbriae, on the other hand, are small bristle-like fibers that help in attachment to surfaces or host tissues. They play a crucial role in the attachment and colonization of bacteria.
Test: Cells - Prokaryotic and Eukaryotic Cells (May 18) - Question 7
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What is the size of prokaryotic ribosomes, and what is their primary function?
Detailed Solution for Test: Cells - Prokaryotic and Eukaryotic Cells (May 18) - Question 7
Prokaryotic ribosomes are 70S in size, composed of 50S and 30S subunits. Their primary function is to serve as the site of protein synthesis, where mRNA is translated into proteins.
Test: Cells - Prokaryotic and Eukaryotic Cells (May 18) - Question 8
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Which of the following is NOT a characteristic of prokaryotic cells?
Detailed Solution for Test: Cells - Prokaryotic and Eukaryotic Cells (May 18) - Question 8
Prokaryotic cells lack a well-defined nucleus. This is one of their distinguishing features, as they have genetic material that lies freely in the cytoplasm.
Test: Cells - Prokaryotic and Eukaryotic Cells (May 18) - Question 9
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What is the primary function of glycocalyx in prokaryotic cells?
Detailed Solution for Test: Cells - Prokaryotic and Eukaryotic Cells (May 18) - Question 9
The primary function of glycocalyx in prokaryotic cells is attachment and protection. It can form a loose sheath (slime layer) or a thick capsule that helps bacteria attach to surfaces and offers protection from the environment.
Test: Cells - Prokaryotic and Eukaryotic Cells (May 18) - Question 10
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Which scientist proposed the cell theory, stating that all living organisms are composed of cells and their products?
Detailed Solution for Test: Cells - Prokaryotic and Eukaryotic Cells (May 18) - Question 10

In 1838, Schleiden's research led him to conclude that all living things are made up of one or more cells. Theodor Schwann made similar observations using animal tissue and in 1839, proposed the first two principles of cell theory. Spontaneous generation is the idea that life can arise from nonliving matter.

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