NCERT Solutions for Class 11 Biology Chapter 8 Cell-The Unit of Life are provided in the article below. It covers all the important definitions, concepts, and methodologies that will be really beneficial for the students appearing for CBSE Class 11 Exam 2022-23. The important topics that are included in this chapter are:
- Cell Biology
- Prokaryotic cells and Eukaryotic cells
- Cell envelope
- Cell organelles
- Endomembrane system
Expected no. of Questions: 2-3 questions of around 5 marks.
Download PDF: NCERT Solutions for Class 11 Biology Chapter 8 Cell The Unit of Life
NCERT Solutions for Class 11 Biology Chapter 8
Class 11 Biology Chapter 8 Cell-The Unit of Life: Important Topics
A cell is referred to as the most basic, structural, and functional unit of all living organisms. A cell is a structure that contains organelles that provide necessary functions to sustain itself. However, not all cells are the same.
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Cell Theory
Initially, this scientific theory was formulated by Matthias Schleiden and Theodor Schwann, who proposed that all living organisms are composed of cells, and new cells are formed from pre-existing cells.
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Prokaryotic Cell
Prokaryotic cells are considered to be unicellular microorganisms and one of the most ancient organisms on earth. There are various types of prokaryotes, some of which are extremophiles. Others are photoautotrophic, which are able to produce nutrients from the sun's energy.
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Eukaryotic Cell
Eukaryotic cells, unlike prokaryotic cells, possess a nucleus enclosed within a membrane. All multicellular organisms are eukaryotic and they fall under the domain of Eukaryota. Structurally, eukaryotic cells are much larger compared to the prokaryotic cells, typically having a volume 10,000 times greater than prokaryotic cells.
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Cell Organelles
| Eukaryotes possess many cellular organelles that function various functions. Some of these organelles, for instance, the cell wall, are exclusive to plant cells.
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