What is a Cell? Its Types, functions and Characteristics

According to National Library of Medicine cells like a tiny build block of life. Due to very small size of cell you can see it through a microscope. Every living creature on the earth is made up of cells.

Inside the cell there is a special instruction book called DNA. This book pass instructions to cell on what to do and how to do.

Table of Contents

Who Discover The Cell And How?

A long time ago Robert Hooke a clever scientist found out about cells in 1665, with the use of a special microscope he look at a thin piece of cork. He was surprised to see a tiny box of cell that looked like a small room.


This was a big discovery of century and helped us a lot to understand that living things are made of tiny build blocks called cells. It was like a introduction to the new world of cells that human eyes could not see before.

What Are The Types of Cells?

1.Red Blood Cells (Erythrocytes):


They are helpful to carry oxygen throughout the body and useful to take away carbon dioxide.


It helps in breathing and gives energy to all cells.

2.White Blood cells (Leukocytes):


They are helpful to fight against germs and keeps us healthy.


It protects body from getting sick and helpful to heal our wounds.

3.Neurons (Nerve Cells):


They’re connected to the brain and send messages to our body so we can feel and move.


These cells helps us to do body movements and emotions.

4.Muscle Cells(Muscle fiber):


They helps us to move body.


 They’re useful when we do running or lifting heavy weights.

5.Epithelial Cells:


 They works as a cover to protect our organs.


 It guards our body from harm and help us to absorb pain.

6.Fat Cells (Adipocytes):


 They store extra energy.


It gives us energy when we need it and keeps us warm..

7.Stem Cells:


They can become different types of cells with the passage of time.


 It helps our body grow, heal, and make new cells.

8.Pancreatic Cells (Islet Cells):


 They makes hormones that controls our blood sugar.


It prevents diabetes because it maintains our blood sugar level at the right place.

9.Skin Cells (Keratinocytes):


They are useful to make a protein that keeps our skin healthy.


 It helps to protect our skin from outside germs and keeps it healthy.

10.Ova and Sperm Cells (Gametes):


They are helpful when you have to make a baby.


This process is helpful to reproduced your genes to a new life but a bit difference from your actual appearance.

What is cellular function in biology?

In the biology the cellular function means different things that cell do to keep a living thing alive. The cells are like tiny workers in a factory that performs their routine job to make sure that everything is running smoothly.

Cell Energy Productions:

It uses nutrients to make energy. This energy is very helpful to cells for their growth and perform their functions smoothly.

Growing And Getting Bigger:

Cells can become large or they can produce more cells which helps then for growth and development.


Cell Response to Changes:

Cells can react on the changes which are happening around them. For example nerve cells help us to feel and react on the things.


Making New Cells:

Cells can make new cells which are very helpful for growth because new cells repair the damage of old cells in our body.

Keeping Things Balance Inside Our Body:

We have different cells in our body and they all are useful to keep balance in our body so body can perform their functions regularly and smoothly because it a certain cell damage happens then it can lead us to a major health issue.

What are the Characteristics of Cell?

Cell Membrane:

Cells have protective barrier which is called the cell membrane. It is like a gatekeeper that decides what things goes in and out of the cell.

Cell’s Genetic Material:

As we know the cell is also called an instruction book inside our body that decides what to do and how to do.

Cell’s Cytoplasm:

Inside our cells there is a sticky substance called cytoplasm. It is like a living room of cell where things are perform.


Cell’s Organelles:

Our cells have a special part known as organelles that do specific job. They are like tools in a toolbox. Some common known examples are nucleus, mitochondria, and others.


Nucleus (in Eukaryotic Cells):

Some cells have a nucleus and it’s like a boss’s room that holds some important instructions inside them.


Cellular Organization:

Everything inside our cells are well organized because it should be sure to work smoothly and if there is a problem even with a single cell then it can leads to some major health problems.


Metabolism Cells:

It uses food to produce energy. It’s like a cell’s way to eating and getting powerful.



While adapting the changes cell prefers to keep things right inside our body including good health and body temperature.

Cell Division:

It means cells make more cells its like a family having new babies to increase their production because it plays very important role to repair damage in our body.


Adaptability and Response to Stimuli:

Cells can adjust to the changes in our body like if we feel warm or cold it keeps our body in balance so body organs can work smoothly.

Specialization (in Multicellular Organisms):

As you know enough about cells that there are different cells inside our body which perform different fuction inside our body according to their need.


How cell runs?


Do Cell Have DNA?

Yes,almost  all the cells have DNA inside then because its like a instruction manual for body that decides what to do and how to do.

What is A Human Cell?

The best definition is the cell is a tiny part inside our body and act like an instruction book for our body.

How Big Is A Cell In Size?

Cell’s size is very small you can not see them without a microscope.

Which Cell Has No Nucleus?

The red blood cells in our body don’t have nucleus they’re fully grown. Red blood cells are very important to carry oxygen inside our body.

Where is DNA Located In Our Body?

DNA is located inside the nucleus and it is inside the cell. The nucleus is a most important part of the cell.

What Is A Nucleus?

The nucleus is a small part a small part inside the cells and it holds DNA of the cells..

What is cell structure?

The cell’s structure means organizing everything inside a cell including the nucleus, mitochondria, and cell membrane. This arrangement decides how cells will work and what functions they have to perform.

What Are The Names Of Cells Without Nucleus?

The cells which are lacking well organized nucleus, meaning cells without a distinct nuclear membrane are known as prokaryotic cells.

What Are The Major Functions of Cells?

  • Maintain body structure and support
  • Body growth
  • Transport nutrients inside overall body
  • Energy production inside our body.
  • Metabolism
  • Reproduction

How Long Does the Cell Cycle Take?

The time it takes for the cell cycle varies for different cells. A typical human cell may take around 24 hours to complete a cycle and divide. However, rapidly dividing mammalian cells, such as those in the intestinal lining, can finish a cycle every 9-10 hours when grown in culture.

Furthermore, different types of cells distribute their time across cell cycle phases differently. In early frog embryos, for instance, cells spend very little time in G1 and G2 phases and instead quickly cycle between S and M phases. This rapid cycling results in the division of a large cell (the zygote) into many smaller cells.

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