What are the 3 main parts of a cell and their function?

What are the 3 main parts of a cell and their function?

The three main/basic parts of the cell are:

Cell Membrane (Plasma Membrane)
Each cell is surrounded by a lipid-rich Cell membrane (also called the Plasma Membrane) that forms a boundary between the cell and its environment.
The membrane encloses the Cytoplasm, which includes all cell contents (except the Nucleus, in cells that have one). Cytosol is the fluid of Cytoplasm.
Nucleus is the central part of an atom, and the process of milk production and secretion begins here; the organelle that contains DNA in eukaryotic cells.

What are the 3 main part of a cell and their function?

Three main parts of cell are cell wall, cell membrane and cytoplasm.
Cell is the basic functional unit of life. Living things are consists of one or more cells. New cells arise from pre existing cells. Three main parts of cells are Cell wall, Cell Membrane and Cytoplasm.

Cell organelle

Specialized cell structure that perform specific function. Common cell organelle are Cell membrane, Cell wall, Cytoplasm.

Three main parts of cell

1. Cell membrane

Cell membrane protects and support the cell. It is present in all the cells controls the movement of substances into and out of the cell. It seperates the cell from the environment.

2. Cell Wall

Stiff and rigid structure that surrounds the cell membrane to support and protect the cel is called cell wall. It is not present in animal cells.

3. Cytoplasm

Thick, jelly like substance present inside the cell membrane that contains the other organelle is called cytoplasm. It is the stage where different organelles work.

Other organelles


Small bodies floating in Cytoplasm or attached to endoplasmic reticulum that make proteins are called Ribosomes.

Cell movement

Cell movement occurs because of flagella, cilia and pseudopodia.

1. Flagella

Tail like structure that helps to propel the cell forward is called flagella.

2. Cilia

Short hair like structure that surrounds the cell and help the cell to move is cilia.

3. Pseudopodia

Extension of cytoplasm into the cell membrane that allows the cell to move is called pseudopodia.

Plant cells and Animal cells

Eukaryotes have membrane bound organelles like nucleus and mitochondria. But they do not look exactly the same like animal and plant cell. Plant perform photosynthesis because of the presence of chloroplast but animal can’t do photosynthesis because of the absence of chloroplast. In the presence of sunlight plant make their food and this process is called photosynthesis.
After food making it is broken down by mitochondria to make energy for the cell. Both animal and plant cell have mitochondria.
Both plant and animal cells have vacuoles. A plant cell contain a large singular vacuole that is used for storage and maintains the shape of the cell. While animal cell have many small vacuoles.
Cell wall and cell membrane both are present plant cell. In plants cell wall surrounds the cell membrane. Cell membrane is present in animal cells but no cell wall.

What is Nucleus

Organelle that contains genetic material (DNA) of eukaryotic organisms is Nucleus. It maintain the integrity of the cell by facilitating transcription and replication processes.
Main components of Nucleus:
A phospholipid bilayer membrane
Shape of Nucleus is flattened, ellipsoidal or irregular depending on the type of cell.
The nuclear membrane differentiate between eukaryotic cells from prokaryotic cells. Nucleus bound membrane is present in eukaryotes, it is not in the case of prokaryotes (e.g. bacteria) that lack membrane-bound organelles.


There are various sorts, sizes, and states of cells in the body. For descriptive purposes, the idea of a “generalized cell” is presented. It incorporates highlights from all cell types. A cell comprises of three sections: the cell membrane, the nucleus, and, between the two, the cytoplasm. Inside the cytoplasm lie multifaceted game plans of fine strands and hundreds or even huge number of miniscule yet unmistakable structures called organelles.

The three main/basic parts of the cell are:

1.Cell Membrane
2. Cytoplasm
3. Nucleus


Each cell in the body is encased by a cell (Plasma) membrane. The cell membrane isolates the material external the cell, extracellular, from the material inside the cell, intracellular. It keeps up the honesty of a cell and controls section of materials into and out of the cell. All materials inside a cell must approach the cell membrane (the cell’s limit) for the required trade.

The cell membrane is a twofold layer of phospholipid particles. Proteins in the cell layer offer basic help, structure channels for section of materials, go about as receptor locales, work as transporter particles, and give ID markers.


This gel-like lattice is the substance wherein the nucleus, organelles and other cell structures sit, similar to bits of natural product in an exemplary gelatin dessert. Substances travel through the cytoplasm by dispersion, or from zones of higher centralizations of those substances to territories of lower focus.

It is the mode for synthetic response. It gives a stage whereupon different organelles can work inside the cell. The entirety of the capacities for cell development, development and replication are done in the cytoplasm of a cell. Inside the cytoplasm, materials move by dissemination, an actual cycle that can turn out just for short separations.


The nucleus can be considered as the cell’s central command. There is regularly one nucleus for every cell, except this isn’t generally the situation, skeletal muscle cells, for example, have two. The nucleus contains most of the cell’s DNA (a modest quantity is housed in the mitochondria, see beneath). The nucleus conveys messages to advise the cell to develop, gap, or kick the bucket.

The nucleus is isolated from the remainder of the phone by a membrane called the atomic envelope; atomic pores inside the layer permit through little particles and particles, while bigger atoms need transport proteins to help them through.

At the point when you think about the unpredictability of the human body, it is nothing unexpected that there are many various sorts of cell. The following is a small selection of human cell types:

Bone Cells

There are three essential kinds of bone cell:

Osteoclasts, which disintegrate bone.

Osteoblasts, which structure new bone.

Osteocytes, which are encircled by bone and help speak with other bone cells.

Blood Cells
There are three significant kinds of platelet:

red platelets, which carry oxygen around the body

white platelets, which are important for the resistant framework

platelets, which assist blood with thickening to forestall blood misfortune after injury.

Muscles Cells
Likewise called myocytes, muscle cells are long, cylindrical cells. Muscle cells are significant for a tremendous scope of capacities, including development, uphold, and interior capacities, for example, peristalsis — the development of food along the gut.

Sperm Cells
These fledgling molded cells are the littlest in the human body.

They are motile, implying that they can move. They accomplish this development by utilizing their tail (flagellum), which is stuffed with energy-giving mitochondria.

Sperm cells can’t separate; they just convey one duplicate of every chromosome (haploid), in contrast to most of cells, which convey two duplicates (diploid).

Female Egg Cells
Contrasted and the sperm cell, the female egg cell is a goliath; it is the biggest human cell. The egg cell is likewise haploid with the goal that the DNA from the sperm and egg can consolidate to make a diploid cell.

Cells are as interesting as they are fluctuated. In one sense they are independent urban areas that work alone, delivering their own energy and proteins; in another sense, they are essential for the gigantic organization of cells that makes tissues, organs, and us.

Human are comprised of trillions of cells — the essential unit of life on earth. In this , we clarify a portion of the structures found in cells and portray a couple of the numerous kinds of cell found in our bodies.