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NEET • BIOLOGY • CELL-THE UNIT OF LIFE
Cell-the unit of life practice · Mixed difficulty
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Practice format and chapter quiz
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211
Medium
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Understanding
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According to Singer and Nicolson model of cell membrane
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Correct option: A
The quasi-fluid nature of lipid enables lateral movement of protein within over all bilayer
Option A (The quasi-fluid nature of lipid enables lateral movement of protein within over all bilayer) is correct because the fluid mosaic model describes the lipid bilayer as allowing lateral movement of proteins.
212
Easy
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Remembering
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Quantasomes are found in
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Correct option: B
Chloroplast
Option B (Chloroplast) is correct because quantasomes are photosynthetic units found within the thylakoid membranes of chloroplasts.
213
Hard
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Remembering
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What is the role of sterol in cell membrane?
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Correct option: A
Stability
Option A (Stability) is correct because sterols, like cholesterol, help maintain the fluidity and stability of the cell membrane.
214
Medium
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Remembering
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Which chapter of the book , written by Robert Hooke gave birth to cell biology?
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Correct option: A
Observe XVII
Option A (Observe XVII) is correct because this chapter described Hooke's observations of cork cells.
215
Easy
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Remembering
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When the centromere is present very close to one end of the chromosome, the chromosome is referred to as
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Correct option: C
Acrocentric
Option C is correct because an acrocentric chromosome has the centromere located very close to one end, resulting in one very short arm and one long arm.
216
Easy
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Remembering
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Part of chromosome after secondary constriction is called
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Correct option: D
Satellite
Option D (Satellite) is correct because the part of the chromosome after the secondary constriction is called the satellite.
217
Easy
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Understanding
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Statement I: Nucleosome constitute the repeating unit a structure in nucleus called chromatin.
Statement II: Nucleosome in chromatin are seen as 'beads - on - string structure when viewed under electron microscope.
Choose the correct answer from the options given below:
Statement II: Nucleosome in chromatin are seen as 'beads - on - string structure when viewed under electron microscope.
Choose the correct answer from the options given below:
View answer and explanation
Correct option: D
Both, Statement I and Statement II are correct
Option D (Both, Statement I and Statement II are correct) is correct because nucleosomes are the repeating units of chromatin structure, and they appear as \'beads-on-a-string\' under an electron microscope.
218
Easy
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Understanding
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Which of the following feature is common to prokaryotes and many eukaryotes?
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Correct option: A
Cell wall is present
Option A is correct because both prokaryotes and many eukaryotes (like plants and fungi) possess a cell wall.
219
Easy
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Remembering
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…… are an exception to cell theory
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Correct option: C
Viruses
Option C (Viruses) is correct because viruses are not cells and require a host cell to replicate, thus not adhering to all tenets of the cell theory.
Revision notes and key takeaways
Review CELL-THE UNIT OF LIFE in your textbook or class notes, then use this set to check your understanding.
Showing 211-219 of 219 questions