Why is nucleus called the control Centre of the cell class 9? 

Why is nucleus called the control Centre of the cell class 9?    

NUCLEUS IS CALLED CONTROL CENTRE OF THE CELL BECAUSE IT PERFORMS TWO MAIN PRINCIPAL FUNCTIONS: The genetic information is replicated and passed on to daughter cells. 2. Controls cellular activities through directing synthesis of particular proteins and enzymes.

What is known as the control center of the cell?

The nucleus, formed by a nuclear membrane around a fluid nucleoplasm, is the control center of the cell. Threads of chromatin in the nucleus contain deoxyribonucleic acid (DNA), the genetic material of the cell.

Is called control room of cell?        

Nucleus is considered as the ‘control room’ of a cell as it controls all cellular activities. The major cellular activities controlled by the nucleus are: Therefore, having such major functions, a nucleus is also referred to as ‘the control room’ of a cell.

What is the function of nucleus?   

The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes, structures that contain the hereditary information. Nucleoli are small bodies often seen within the nucleus. The gel-like matrix in which the nuclear components are suspended is the nucleoplasm.

Who controls the function of cell?

The nucleus regulates all cell activities of the cell. It is also called the cell’s brain or control centre. Karyokinesis is known as the division of the nucleus during cell division. Using the DNA’s genetic information, the nucleus regulates all the cell’s functions, such as growth and metabolism.

What is powerhouse of cell?             

Mitochondria are tiny organelles inside cells that are involved in releasing energy from food. This process is known as cellular respiration. It is for this reason that mitochondria are often referred to as the powerhouses of the cell.

What is the control center of cell activities?       

Known as the cell’s “command center,” the nucleus is a large organelle that stores the cell’s DNA (deoxyribonucleic acid). The nucleus controls all of the cell’s activities, such as growth and metabolism, using the DNA’s genetic information.

What is the main function of mitochondrion?        

​Mitochondria    Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical energy needed to power the cell’s biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate (ATP).

What is called kitchen of cell?        

The mitochondria are double membrane bound cell organelles. The mitochondria produces energy needed for various chemical activities essential for life in the form of ATP (Adenosine Triphosphate) molecules. … The chloroplasts are therefore known as the kitchen of the cell.

What is nucleus diagram?      

A nucleus diagram is very useful for studying its structure. Its structure consists of the following important parts: The nuclear membrane- This is an aspect of the nucleus that differentiates eukaryotic cells from prokaryotic cells. This forms the lipid bilayer nucleus envelope. Also, it contains nuclear pores.

What is a nucleus simple definition?        

1 : a usually round part of most cells that is enclosed in a double membrane, controls the activities of the cell, and contains the chromosomes. 2 : the central part of an atom that comprises nearly all of the atomic mass and that consists of protons and neutrons.

What is nucleus explain?        ​

A nucleus is a membrane-bound organelle that contains the cell’s chromosomes. Pores in the nuclear membrane allow for the passage of molecules in and out of the nucleus.

What are the two main functions of nucleus?     

Answer: This organelle has two major functions: it stores the cell’s hereditary material, or DNA, and it coordinates the cell’s activities, which include growth, intermediary metabolism, protein synthesis, and reproduction (cell division).

What is a prokaryote?            

Prokaryotes are a microscopic single-celled organism that has neither a distinct nucleus with a membrane nor other specialized organelles. Prokaryotes include the bacteria and archaea. … Some prokaryotes, such as cyanobacteria may form large colonies.

Which cell is the longest?   

In the human body, the nerve cell is the longest cell. Nerve cells are also called neurons that are found in the nervous system. They can be up to 3 feet long.

What controls the function of a cell class 8?       

(i) Nucleus controls the functions of a cell. (ii) Cell membrane is like a policeman which does not allow everything and anything into and out of the cell. (iii) Genes present on chromosomes transfer characters from parents to offspring.

What is definition of cell?   

In biology, the smallest unit that can live on its own and that makes up all living organisms and the tissues of the body. A cell has three main parts: the cell membrane, the nucleus, and the cytoplasm.

Why are mitochondria called powerhouse of cell?         

Mitochondria are often called the “powerhouses” or “energy factories” of a cell because they are responsible for making adenosine triphosphate (ATP), the cell’s main energy-carrying molecule. In mitochondria, this process uses oxygen and produces carbon dioxide as a waste product.

Is the brain of the cell?        

The nucleus is called the “brain” of the cell because it holds the information needed to conduct most of the cell’s functions. These proteins are built by the cell using the information in DNA, which is held in the nucleus.

How does the nucleus control the cell activities?

The nucleus directs all cellular activities by controlling the synthesis of proteins. The nucleus contains encoded instructions for the synthesis of proteins in a helical molecule called deoxyribonucleic acid (DNA). The cell’s DNA is packaged within the nucleus in a structural form called chromatin.

What’s the command-and-control center of a cell called?

 The nucleus serves as the cell’s command center, sending directions to the cell to grow, mature, divide, or die. It also houses DNA (deoxyribonucleic acid), the cell’s hereditary material.