Ch.4 Lec 1 The Cell Introducion Fsc Part 1 Urdu/Hindi lecture MDCAT.NEET, NCERT By M Bilal Ch.
8.4 هزار بار بازدید -
4 سال پیش
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Channel Link Biology:-
Channel Link Biology:-
@lecturermbilalchaudhary6369
Lec:- Muhammad Bilal Chaudhary (M. Phil Biology)
Govt. Postgraduate College Railway Road Shakargarh. Distt Narowal Punjab Pakistan.
Channel Link Physics:-
Physics Preparation (M. Phil Physics Quaid-i-Azam University Islamabad)
@physics-preparation
In this video you learn about.
Define: Cell, Cytology, Tissue and histology?
CELL: The basic structural and functional unit of the living body is known ascell.
Cytology: The study of structure and function of cell is known as cytology.
Tissue: A group of physically linked cells and associated intercellular substances forparticular function is known as tissue.
Histology: The study of tissue is known as histology.
What is Cell?
“Cell is the basic structural and functionalunit of the living body”. Each cellhas different cell organelles which perform specific functions. In different parts of the body, different kinds of cells are present.Cells play their role according to necessity and demand.The activities of a celldepend upon cell organelles, so in different situations and places particular organelle is active. For example, in photosynthetic cells, plastids or chloroplasts play important role. In case of secretory cells, Golgi bodies and lysosomes are active. “A distinct part of a cellwhich has a particular structure and function is called organelle”.
Cell is the unit which builds up the body, and cell is also that unit which is basis of every function. Union of cells forms tissue, assembly of tissue forms organ. Different organs make system when they are arranged in particular arrangement. Thus body isformed by the specific sequence and combination of systems.
In other words, the healthy body or organism depends upon normal functions of the systems. The performance of the system depends upon organs. The regulation of organ depends upon tissue. If tissue will be normal so cells are normal in it. Cell plays its normal role if organelles are normal and active in their duties.
KEEP IN MIND
“The basic structural and functional unit of the cell is Protein”. Protein is builderof organelles in the cell, while all enzymes and most hormones are proteins. Immunity, contraction and relaxation, wound healing, and carrying of O2 etc. depend upon protein.“Cell is a bag of chemicals. Actually, making and breaking of chemicals occur in it”.
What is cell theory, history and describe its salient features?
CELL THEORY:
Final or concluding description about the cell is known as cell theory”. It is described by a German Zoologist Theodor Schwann in 1838 and a German botanist M.J. Schleiden in 1839.
Salient Features:
(i) All organisms (living body) are composed of one or more cells.
(ii) All cell arise from pre-existing cells.
(iii) Cell is the basic structural as well as functional unit for all organisms.
(b) HISTORY OF CELL THEORY:
“Is there a fundamental unit of structure shared by all organisms?” This was the scientific question of the history.
Invention of Microscope (1610):
The invention of microscope helped the scientists to find out the answers of this type of question. Crude microscope seen to has been made for the first time in Holland shortly before 1600. By about 1610, the Italian Astronomer and Physicist.
Galileo and Observation of Microorganism:
Galileohad made a microscope and used it to observe very small organism’sanimals.
Discovery of Microscopic Life:
He was followed by many others among them. Leeuwenhoek who discovered microscopic life. Magnified images revealed a hidden world and answered questions that could not have been answered before.
Robert Hooke and Cork (1665):
Robert Hooke in 1665 was reportedfirst of all his observations, sensational at that time in this book. “Micrograpahia”, that the apparently uniform and firm matter of bottle corks (outer bark of the oak) was in reality composed of innumerable “tinyboxes” or ‘cells’.
Conclusion of Hooke:
According to Hooke cells were empty space bounded by thick walls or filled withair or water, because he saw only non-livingor dead frame work of cell walls.
LoronzOken and Vesicles (1805):
The work was again started in 19th century. In 1805, LorzenOken, a German scientist believed that all living beings originated from or consist of vesicles or cells.
Fig. 4.1
These All Chapters Also Discuss in this channel.
1. Introduction Of Biology
2. Biological Molecules
3. Enzyme
4. The Cell
5. Variety Of life
6. Kingdom Monera
7. Kingdom Protista
8. Kingdom Fungi
9. Kingdom Plantae
10. Kingdom Animalia
11. Bioenergetic
12. Nutrition
13. Gaseous Exchange
14. Transport
15. Homeostasis
16. Support And Movement
17. Co.Ordination And Control
18. Growth And Development
19. Reprodution
20. Chromosomes and DNA
21. Cell Cycle
22. Variation and Genetics
23. Biotechnology
24. Evolution
25. Eosystem
26. Some major Ecosystem
27. Man And his Environment
Each and every step explain very well methods..
@lecturermbilalchaudhary6369
Lec:- Muhammad Bilal Chaudhary (M. Phil Biology)
Govt. Postgraduate College Railway Road Shakargarh. Distt Narowal Punjab Pakistan.
Channel Link Physics:-
Physics Preparation (M. Phil Physics Quaid-i-Azam University Islamabad)
@physics-preparation
In this video you learn about.
Define: Cell, Cytology, Tissue and histology?
CELL: The basic structural and functional unit of the living body is known ascell.
Cytology: The study of structure and function of cell is known as cytology.
Tissue: A group of physically linked cells and associated intercellular substances forparticular function is known as tissue.
Histology: The study of tissue is known as histology.
What is Cell?
“Cell is the basic structural and functionalunit of the living body”. Each cellhas different cell organelles which perform specific functions. In different parts of the body, different kinds of cells are present.Cells play their role according to necessity and demand.The activities of a celldepend upon cell organelles, so in different situations and places particular organelle is active. For example, in photosynthetic cells, plastids or chloroplasts play important role. In case of secretory cells, Golgi bodies and lysosomes are active. “A distinct part of a cellwhich has a particular structure and function is called organelle”.
Cell is the unit which builds up the body, and cell is also that unit which is basis of every function. Union of cells forms tissue, assembly of tissue forms organ. Different organs make system when they are arranged in particular arrangement. Thus body isformed by the specific sequence and combination of systems.
In other words, the healthy body or organism depends upon normal functions of the systems. The performance of the system depends upon organs. The regulation of organ depends upon tissue. If tissue will be normal so cells are normal in it. Cell plays its normal role if organelles are normal and active in their duties.
KEEP IN MIND
“The basic structural and functional unit of the cell is Protein”. Protein is builderof organelles in the cell, while all enzymes and most hormones are proteins. Immunity, contraction and relaxation, wound healing, and carrying of O2 etc. depend upon protein.“Cell is a bag of chemicals. Actually, making and breaking of chemicals occur in it”.
What is cell theory, history and describe its salient features?
CELL THEORY:
Final or concluding description about the cell is known as cell theory”. It is described by a German Zoologist Theodor Schwann in 1838 and a German botanist M.J. Schleiden in 1839.
Salient Features:
(i) All organisms (living body) are composed of one or more cells.
(ii) All cell arise from pre-existing cells.
(iii) Cell is the basic structural as well as functional unit for all organisms.
(b) HISTORY OF CELL THEORY:
“Is there a fundamental unit of structure shared by all organisms?” This was the scientific question of the history.
Invention of Microscope (1610):
The invention of microscope helped the scientists to find out the answers of this type of question. Crude microscope seen to has been made for the first time in Holland shortly before 1600. By about 1610, the Italian Astronomer and Physicist.
Galileo and Observation of Microorganism:
Galileohad made a microscope and used it to observe very small organism’sanimals.
Discovery of Microscopic Life:
He was followed by many others among them. Leeuwenhoek who discovered microscopic life. Magnified images revealed a hidden world and answered questions that could not have been answered before.
Robert Hooke and Cork (1665):
Robert Hooke in 1665 was reportedfirst of all his observations, sensational at that time in this book. “Micrograpahia”, that the apparently uniform and firm matter of bottle corks (outer bark of the oak) was in reality composed of innumerable “tinyboxes” or ‘cells’.
Conclusion of Hooke:
According to Hooke cells were empty space bounded by thick walls or filled withair or water, because he saw only non-livingor dead frame work of cell walls.
LoronzOken and Vesicles (1805):
The work was again started in 19th century. In 1805, LorzenOken, a German scientist believed that all living beings originated from or consist of vesicles or cells.
Fig. 4.1
These All Chapters Also Discuss in this channel.
1. Introduction Of Biology
2. Biological Molecules
3. Enzyme
4. The Cell
5. Variety Of life
6. Kingdom Monera
7. Kingdom Protista
8. Kingdom Fungi
9. Kingdom Plantae
10. Kingdom Animalia
11. Bioenergetic
12. Nutrition
13. Gaseous Exchange
14. Transport
15. Homeostasis
16. Support And Movement
17. Co.Ordination And Control
18. Growth And Development
19. Reprodution
20. Chromosomes and DNA
21. Cell Cycle
22. Variation and Genetics
23. Biotechnology
24. Evolution
25. Eosystem
26. Some major Ecosystem
27. Man And his Environment
Each and every step explain very well methods..
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