Physics, asked by disha3032, 1 year ago

What is cell , components of cell


purveshsohony2006: you should take a look at the subject before askin the question
purveshsohony2006: and now you call my ans undefined

Answers

Answered by curioussoul
7
CELL THEORY

Cells are the basic unit of life. 

The Cell Theory states that:

1) All organisms are made up of one or more cells and the products of  those cells.

2) All cells carry out life activities ( require energy, grow, have a limited size).

3) New cells arise only from other living cells by the process of cell division.

 

THE THREE MAIN COMPONENTS OF ANY PLANT OR ANIMAL CELL ARE:

1. PLASMA MEMBRANE/ CELL MEMBRANE

Structure- a bilipid membraneous layer composed of proteins and carbohydrates.  It is fluid like.

Function - the cell membrane separates the cell from its external environment, and is selectively permeable (controls what gets in and out).  It protects the cell and provides stability.

Proteins are found embedded within the plasma membrane, with some extending all the way through in order to transport materials.

Carbohydrates are attached to proteins and lipids on the outer lipid layer.

 

2. CYTOPLASM

Structure - The jelly-like substance composed of mainly water and found between the cell membrane and nucleus.  The cytoplasm makes up most of the "body" of a cell and is constantly streaming.

Function - Organelles are found here and substances like salts may be dissolved in the cytoplasm.

 

3. NUCLEUS

Structure - The largest organelle in the cell. It is dark and round, and is surrounded by a double membrane called the nuclear envelope/membrane.  In spots the nuclear envelope fuses to form pores which are selectively permeable.  The nucleus contains genetic information (DNA) on special strands called chromosomes. 

Function - The nucleus is the "control center" of the cell, for cell metabolism and reproduction.


jasmeet111: disha pls mark it as brainliest
jasmeet111: wlcome dude
disha3032: Thanks
disha3032: But what can we write on short
jasmeet111: in short, u can just write definition of cell
jasmeet111: including name of organelle and their functions
jasmeet111: if it's 3mark question,this much is enough
Answered by mozammil921
2

Answer:

Cells are the basic building blocks of all living things. The human body is composed of trillions of cells. They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions.

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