Fire and cookery , Biology

Assignment Help:

Fire and Cookery :

Fire and Cookery where and when fiie came to be used  is not known.  Fire, to start with, must have been a frightening thing, giving rise to many myths and legends. However, as man slowly learned to control it, he found it very useful to keep himself wann and to frighten away wild animals. It is easy to imagine that chance eating of  burnt or charred flesh must have led to the idea of cooking, which then made even tough meat edible and tastier.  Thus, it must havetremendously increased the number of  things one could eat.  It was, perhaps, from the use offire for cooking that fired clay pottery and melting of metals for making tools arose.  

Boiling gave rise to certain difficulties. At first, water was heated by dropping hot stones into water in  leather buckets. We find such itones, cracked by heating and chilling,  around prehistoric sites.  The crucial discovery, however, was that by  coating a basket with thick clay it could be put on the fire. Eventually, towards the end of  the Stone Age. it was -discovered  that coated baskets crack while heating, whereas pots made of heat-treated clay do not crack. Fired pottery was,  tlrerel'ore, a very significant discovery. l.'inally, as Lhc problem of storing liquids for long periods in clay pots was tackled, the slower chemical changes of fermentation could be noted and later used for brewing wine.  From the use of dyes, paints and tanning as found in  this epoch, we can  infer that the use of rudimentary chemistry for transforking materials was also in progress in the later part of the Stone Age.  


Related Discussions:- Fire and cookery

What is the function of glucose-6-phosphatase, What is the function of gluc...

What is the function of glucose-6-phosphatase? a) catalyze removal of one phosphate group from glucose b) catalyze removal of six phosphate groups from glucose c) catalyze the remo

Explain the role of cuvier in animal taxonomy, Explain the role of cuvier i...

Explain the role of cuvier in animal taxonomy? Cuvier (1769-1832) was critical of Lamarck's evolutionary concept which thereafter remained in oblivion for half a century. Cuvi

Fats, what are fats

what are fats

Describe two differences among green algae and plants, Describe two differe...

Describe two differences among green algae and plants. Algae lack tissue differentiation and have no true roots, leaves and stems. The gametangia of algae are single-celled; th

Cell membrane, CELL MEMBRANE As discrete units of life  all living cell...

CELL MEMBRANE As discrete units of life  all living cells are separated from each other and from their external environment by an  extremely delicate (75 A to 100 a= 0.00075 to

What are the joints, What are the joints Joints are the place of artic...

What are the joints Joints are the place of articulation between two or more bones, or between a bone and a cartilage. Due to the presence of a number of joints, the movement

Define fats requirements of school children and adolescents, Define Fats re...

Define Fats requirements of school children and adolescents? The linoleic acid requirements for school children and adolescents have been set at 3 en%. In terms of visible fats

What are the main respective constituents of cell walls in, What are the ma...

What are the main respective constituents of cell walls in bacteria, protists, fungi and plants? In bacteria the cell wall is made of peptidoglycans; between protists algae hav

Explain about the smoking - methods of food processing, Explain about the S...

Explain about the Smoking - methods of food processing? Smoking was known as a method of food preservation at an early date. Foods are exposed to smokes by burning some special

Phycomycosis (zygomycosis), Phycomycosis (zygomycosis) Zygomycosis (pr...

Phycomycosis (zygomycosis) Zygomycosis (previously known phycomycosis) involves fungi belonging to genera Mucor, Rhizopus, Absidia, Entomophthora, Mortierella and Basidiobolou

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