History of cell biology, Biology

Assignment Help:

HISTORY OF CELL BIOLOGY

Scientific knowledge grows with the development of new tools and techniques for studying various physical and biological processes. This is true also of the origin of the concept of cell as a basic unit of life. By 1800 A.D., good microscopes were developed and consequently plants and animals were found to be made up of small units, later known as 'cells'. However, it was only in 1838, that the cell theory was proposed. According to this theory, the cell is both the structural and the functional unit of all living organisms. Cell theory gave a great impetus to study of the cell. It was established that the cell is a mass of protoplasm limited by a cell membrane and possessing a nucleus. Another important observation was thatcells come only from pre-existing cells as a result of cell division. Details of cell division were soon worked out. It became apparent that mitosis is the formation of nuclear filaments (chromosomes) and their equal division between the daughter cells..It was also observed that organisms generally develop from the fusion of two sex cells, the spermatozoon (male sex cell) and ovum (female sex cell). In 1892, cytology (cyto = cell, logos = study) was established as a separate branch of biology. Study of cells with, electron microscope gave a new dimension to the study of cell. Detailed morphological studies of the cell helped to relate the structure with furiction of cellular organelles.

Interaction between various branches of scientific enquiry leads to their overall growth. The interaction between cytology and genetics on one hand and between physiology and biochemistry on the other gave rise to a more comprehensive discipline, Cell Biology, which embodies all that should be known about the cell.

791_Untitled.jpg


Related Discussions:- History of cell biology

Explain the elimination of dna helicase activity in a cell, Which of the fo...

Which of the following results from the elimination of DNA helicase activity in a cell? A. The melting of the DNA double helix at the site of replication initiation will fail t

What is the mechanism of elisa, ELIZA stands for enzyme linked immune diffu...

ELIZA stands for enzyme linked immune diffusion assays. It works on standard of antigen antibody reaction.

Cow-pox (vaccinia), C o w - po x (vaccinia) E p ide...

C o w - po x (vaccinia) E p idemiology: This infection, although mostly occurring in cows, sometimes also occurs in buffaloes. Under natural conditions, t

Determine the biocompatibility of the material, Determine the Biocompatibil...

Determine the Biocompatibility of the material It is a vital factor as we have discussed in detail in the preceeding part of this unit. The nature of the material and its surf

Symptoms of hiatus hernia, Q. Symptoms of hiatus hernia? In most patien...

Q. Symptoms of hiatus hernia? In most patients, no symptoms are seen. When symptoms do occur, they are: 1. discomfort after heavy meal, 2. Difficulty in breathing while l

Explain some advantages of most probable number, Explain some Advantages of...

Explain some Advantages of Most Probable Number? 1. It is simple and method of choice for determining fecal coliform densities. 2. Results of different laboratories are comp

What two characteristics unique and different from others, In general compa...

In general compare and contrast the three functional classifications of joints according to movement. What are two characteristics that make synovial joints unique and different fr

Explain thetechnique of total anomalous surgery, Explain theTechnique of to...

Explain theTechnique of total anomalous Surgery ? Corrective surgery is undertaken as an emergency procedure after diagnosis has been confirmed by two-dimensional echocardiogra

Phenotypical proportion obtained in f2 generation explained, Considering th...

Considering the hybridization in a given trait like the color of the hair of a mammalian species (white/black) conditioned by a pair of different alleles under complete dominance (

Define sample titration for saponification number of fats, Define Sample Ti...

Define Sample Titration for Saponification Number of Fats? Measure 2 ml of oil with the help of a pipette and transfer this oil to a 250 ml conical flask. Add 40 ml of alcoholi

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd