write an advertisement , advertising job description on i) nucleus ii) mitichondria iii. plasma membrane iv. lysosomes v. centrosomes
Answers
1) nucleus: it is known as the control centre of the cell. It also controls all the activity of the cell.
2) mitochondria: it is known as the power house of the cell. It realised the energy in the form of ATP.
3) plasma membrane: it is the outermost layer of animal cell. It helps the entry and exist of some material in and out of the cell.
4) lysosomes: it is known as the suicide bags of the cell. It has power full enzyme which help to digest food and waste material.
5) it is organelle where main cells are microtubules are organised.
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Answer:
Nucleus:-
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.It contains the cell’s hereditary information and controls the cell’s growth and reproduction.
The nucleus has been clearly explained as a membrane-bound structure that comprises the genetic material of a cell.
Mitochondria:-
Mitochondria are membrane-bound organelles present in the cytoplasm of all eukaryotic cells, that produces adinosine triphosphate (ATP), the main energy molecule used by the cell.The mitochondrion is a double-membraned, rod-shaped structure found in both plant and animal cell.
Its size ranges from 0.5 to 1.0 micrometre in diameter.
Plasma membrane:-
Plasma membrane is a thin membrane that surrounds every living cell, separating it from the external environment around it. The plasma membrane consists of water-soluble substances like nucleic acids, proteins, carbohydrates. Typically, the plasma membrane defines the boundary of a cell. Apart from protecting the constituents of the cell, substances are exchanged through the surface of the plasma membrane.
The plasma membrane is composed of lipids and proteins that contribute to the functioning of the membrane. Even though the plasma membrane is the only barrier between internal components of the cell and the extracellular environment in some species. In some organisms, have an extra-barrier, apart from plasma membrane called the cell wall. Functions of plasma membrane include protection, selective permeability, cell signaling, endocytosis and exocytosis.
Lysosomes:-
Lysosomes are an important cell organelle found within eukaryotic animal cells. Due to their peculiar function, they are also known as the “suicide bags” of the cell.Lysosomes are known as Suicidal Bags as they tend to destroy the cell membrane with its digestive enzymes, causing lysis of the cell (also called autolysis)
Lysosomal enzymes are synthesized in the rough endoplasmic reticulum, where they are brought in by the Golgi apparatus through tiny vesicles. It eventually merges with bigger acidic vesicles
Centrosomes:-
Centrosome is a microtubule-organizing centre in animal cellsThe centrosomes help in cell division.
They maintain the chromosome number during cell division.
They also stimulate the changes in the shape of the cell membrane by phagocytosis.
In mitosis, it helps in organizing the microtubules ensuring that the centrosomes are distributed to each daughter cell.
They regulate the movement of microtubules and cytoskeletal structures, thereby, facilitating changes in the shapes of the membranes of the animal cell.
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