Physiology and biochemistry evidences, Biology

Assignment Help:

PHYSIOLOGY AND BIOCHEMISTRY -

  • Ample and concrete evidence of organic evolution are obtained from the functional activity and chemical composition of animals.
  • J.B.S. Haldane (1937) stated that final theory of evolution will see it largely as a biochemical process.
  • Protoplasm - Protoplasm is a physical basis of life. Each cell is composed of a colloidal substance called protoplasm. The chemical composition of protoplasm is fundamentally similar in all animals.
  • Chromosome - Chromosomes are common to all living cells. They have the same chemical composition in all animals. Each chromosome is formed of proteins and nucleic acids. This is because of a common ancestry.
  • DNA - In all animals DNA functions 'as the genetic material. It is formed of many small units called nucleotides.
  • Each nucleotide has similar bases and attachment in all organisms.
  • Chimpanzees and humans share more than 97 percent of their genes.
  • Some genetic differences of vertebrates as estimated by DNA hybridization are as follows -

Organisms                                                % of difference in DNA sequences

Human/Chimpanzee                                                  1.6

Human/Gibbon                                                         3.6

Human/Rhesus monkey                                              5.5

  • Thus it can be concluded that closest living relative of man is chimpanzee. It can be proved by antiserum test.
  • Enzymes - Enzymes are proteins of high molecular weight necessary for the digestion of food. Trypsin is a protein has the same structure and function form protozoa to man. Similar amylase splits starch and occurs from the sponge to man. The similarity of enzymes shows interrelationship between various animals.
  • Hormones - Hormones are chemical messengers secreted by the endocrine glands. Thyroxine secreted by vertebrates is similar in their structure and function. In frog it is essential for metamorphosis. Thyroxine deficiency in man can be treated with the thyroxine hormone of other animals.

Related Discussions:- Physiology and biochemistry evidences

Investigation of aortic regurgitation by surgical therapy, Q. Investigation...

Q. Investigation of aortic regurgitation by Surgical Therapy? The recommendation for Aortic valve replacement is only for those patients with Severe AR. If patients with mild A

Show upsloping st-segment, Q. Show Upsloping ST-Segment? There are few ...

Q. Show Upsloping ST-Segment? There are few subjects in exercise literature that has generated more controversy than the significance of up sloping ST-segments. The up sloping

Neo-lamarckism, NEO-LAMARCKISM Modem modified form of Lamarck theory...

NEO-LAMARCKISM Modem modified form of Lamarck theory is regarded as Neo-Lamarckism. Mc Dougall (1938) found that time taken for training the mice was reducing gradually

Define about the manganese deficiency, Define about the Manganese Deficienc...

Define about the Manganese Deficiency? Mn deficiency has been observed in many species of animals and symptoms include: impaired growth, skeletal abnormalities, depressed repro

Discuss about the luria nebraska procedure, Discuss about the Luria Nebrask...

Discuss about the Luria Nebraska procedure The Luria Nebraska procedure involves an age and education correction. It is accomplished by computation of a cutoff score for abnorm

Avian (fowl cholera), Avian (fowl cholera) Fowl cholera is a contagious...

Avian (fowl cholera) Fowl cholera is a contagious septicaemic disease of almost all classes of fowl. The causal agent is Pasteurella multocida.Serotypes A:1 and A:3 are usually

What is chemical disinfection, Q. What is Chemical disinfection? Chemic...

Q. What is Chemical disinfection? Chemicals are added to waste to kill or inactivate the pathogens it contains, this treatment usually results in disinfection rather than steri

Explain the true indications of endodontic surgery, Explain the True indica...

Explain the True indications of Endodontic Surgery 1. Failure of non-surgical endo. Re-treatment "persistent lesion" 2. Failure of initial and retreatment will not achieve b

Active instruments-small occlusal, Active instruments -This category o...

Active instruments -This category of instruments actively engage a restorative , enabling a specific dislodgment force to potentially lift off the prosthesis -These devices

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