Digestive enzymes, Biology

Assignment Help:

Digestive Enzymes

Now let us consider the general principles of digestion that are applicable t6all animals. We will start with the digestive enzymes that breakdown the large food molecules into smaller soluble component units. This breakdown involves the uptake of water and is called hydrolysis. However, digestive enzymes differ in the following ways:

a) Digestive enzymes are not as narrowly specific as other enzymes rather they show group specificity. For example, enzymes that digest carbohydrates can digest polysaccharides of both animal and plant origin,

 b) Even though enzymes performing similar functions in different animals are given same names, they are not identical chemically. For example, trypsin (an enzyme, that hydrolyses proteins) in humans is not identical to that found in fish. Temperature and pH for optimum activity is also different. For example, trypsin from vertebrate pancreas acts best in the pH range of 7-9 but in silkworm the pH range is 6.2-9.

c) Digestive enzymes from pancreas particularly those that digest proteins are secreted in an inactive form.

The three major classes of digestive enzymes are:

  1. Proteases that hydrolyse peptide bonds in proteins,
  2. Carbohydrases that hydrolyse glycosidic bonds in carbohydrate,
  3. Lipases that hydrolyse ester bonds in fats

Related Discussions:- Digestive enzymes

Illustrate about human eyes, Eyes We have a pair of eyes. They are held...

Eyes We have a pair of eyes. They are held in socket of the skull by four rectus muscles and two oblique muscles. These muscles control the movements of the eyes. The wall of t

Experiments of redi and pasteur of spontaneous generation, How did the expe...

How did the experiments of Redi and Pasteur refute the hypothesis of spontaneous generation? To refute the impulsive generation hypothesis many experiments were performed. The

Rejection of a transplant, Which of the following cells of the immune syste...

Which of the following cells of the immune system is most likely to be directly involved in the rejection of a transplant? Answer plasma cells eosinophils basophils T lymphocytes m

Explain pericardial effusion, Q.Explain Pericardial Effusion? The confi...

Q.Explain Pericardial Effusion? The configuration of the heart in pericardial effusion depends on the volume of fluid and its distribution. It may have a globular or non-speci

What a diploid cell contains, A diploid cell contains: A.one half of a comp...

A diploid cell contains: A.one half of a complete set of chromosomes B.several complete sets of chromosomes C.the correct number of chromosomes D.two complete sets of chromosomes E

Explain the term microfilaments, Explain the term Microfilaments ? Mi...

Explain the term Microfilaments ? Microfilaments are fine fibrils, only 7 nm in diameter, composed of a protein called actin. Actin is one of the two major proteins involved

Explain advantages of having internal gills, 1. Explain the challenges and ...

1. Explain the challenges and advantages of having internal gills over external gills for gas exchange? 2. Explain how increased stress levels can affect hormones which ultimate

Define about the growth and development in children, Define about the Growt...

Define about the Growth and development in children? Growth and development in children can be studied under the following heads: . • Changes in physical development and bod

Name of the terminal portion of the axon, Q. What is the name of the termin...

Q. What is the name of the terminal portion of the axon? The terminal portion of the axon is called as presynaptic membrane Through, this membrane neurotransmitters are release

Mollusca, locomotary organ in mollusca

locomotary organ in mollusca

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