Cell-the Unit of Life Class 11 Notes
Chapter 8 Cell-the Unit of Life
The Units of Life is one of the main topics of study for the final exam. Therefore, students can greatly benefit from having well-written NCERT Biology Class 11 notes as a reference when preparing and reviewing them. This article provides detailed notes to text and exercises from Chapter 8 of NCERT Class 11 Biology. These notes help students achieve high scores on exams. Continue reading this article to learn more about the notes.
CBSE CLASS 11 BIOLOGY CH-8
Points to Remember
We have highlighted a few of the important points below for students to refer to while preparing for Chapter 8 of Biology Class 11.
The cell was discovered by Robert Hooke in 1665.
Organisms can be classified as eukaryotic and prokaryotic.
Cytoplasmic connections from cell to cell are known as plasmodesmata.
Mitochondrion helps in oxidative phosphorylation and the generation of adenosine triphosphate.
Ribosomes are the protein factories of the cell.
Plastids are pigment-containing organelles found in plant cells only.
Topics and Sub-topics
Units of Life cover important topics such as cell theory, prokaryotic cells, endomembrane systems, and more. Each topic has a series of exercises to keep students tested on their knowledge.
The table below lists the chapter topics. In fact, you can also test your level by setting up your own test for free on Vidyakul.
Frequently Asked Questions
Define cell theory?
The cell theory was proposed by the two scientists – Theodor Schleider and Matthias Schwann in the year 1839. According to this theory:
A new cell exists from pre-existing cells.
All cells have the same basic chemical structure.
The cell is the structural and functional unit of all living things.
Hereditary information is passed from parent cell to child cell.
The fundamental biochemical reactions of life take place within cells.
All living organisms existing on the planet earth are composed of one or more cells.
Which cell organelle is found only in animal cells?
Cell organelles which are present exclusively in animal cells are Centrosomes.
What are the functions of Plant Cell?
The major functions of the plant cell are:
They are the building blocks of plants.
Cell walls provide shape to the cell and protect the inner cell organelles.
Stores food in the form of energy.
Helps in the process of photosynthesis, transpiration and other biological [process.
Help in the transport of water and nutrients from the roots and leaves to different parts of the plants.
How many types of cells are there?
There are different types of cells and are differentiated mainly based on the structure, functions, their compositions, etc. The two main types of cell are- Prokaryotes and Eukaryotes. This differentiation is based on the presence and absence of a nucleus.
Practice Questions
Which is the largest single cell?
Mention the similarity and differences between mitochondria and chloroplasts?
What are nuclear pores? State their function.
Give difference between cell wall and cell membrane.
The cell was discovered by Robert Hooke in 1665.
Organisms can be classified as eukaryotic and prokaryotic.
Cytoplasmic connections from cell to cell are known as plasmodesmata.
Mitochondrion helps in oxidative phosphorylation and the generation of adenosine triphosphate.
Ribosomes are the protein factories of the cell.
Plastids are pigment-containing organelles found in plant cells only.
Define cell theory?
A new cell exists from pre-existing cells.
All cells have the same basic chemical structure.
The cell is the structural and functional unit of all living things.
Hereditary information is passed from parent cell to child cell.
The fundamental biochemical reactions of life take place within cells.
All living organisms existing on the planet earth are composed of one or more cells.
Which cell organelle is found only in animal cells?
What are the functions of Plant Cell?
They are the building blocks of plants.
Cell walls provide shape to the cell and protect the inner cell organelles.
Stores food in the form of energy.
Helps in the process of photosynthesis, transpiration and other biological [process.
Help in the transport of water and nutrients from the roots and leaves to different parts of the plants.
How many types of cells are there?
Which is the largest single cell?
Mention the similarity and differences between mitochondria and chloroplasts?
What are nuclear pores? State their function.
Give difference between cell wall and cell membrane.
Know more about the same in Cell-the Unit of Life Class 11 Notes pdf.
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