Protoplasm, Biology

Assignment Help:

Protoplasm

  • Also known as bioplast.
  • It is gelly like & semi liquid in appearance.
  • It is translucent in nature.
  • It is colourless, oderless, viscous, elastic & granular in nature.
  • Protoplasm is essential for life.
  • Protoplasm is the fluid along with all the structures of cell bounded with in the limits of cell membrane.
  • Protoplasm includes plasmalemma, cytoplasm & nucleus.
  • Different types of granules are embeded in it, capable to perform all vital activities, so protoplasm is vector for vital activities.
  • Strusburger differentiated protoplasm into somatoplasm & germplasm in body.
  • In Amoeba somatoplasm & germplasm are not differentiated so body is known as soma.
  • Main component of protoplasm is water, functions as solvent.
  • By increasing age water conetents are reduced so activity becomes dull.
  • In dorment seed water is less as a result seeds are inactive.
  • According to Renke & Roderwald analysis of protoplasm is not possible in living state because most of the reactions are exothermic.
  • On analysis water, CO & amonia are formed.
  • Due to proteins protoplasm is coloidal in nature.
  • It is polyphagic and reversible.
  • Acidic group of protein controls chemical equilibrium.
  • Protoplasm is crystallo-colloidal mixture, explained by Fisher & Hardy.
  • It's particle size is .001m to .1m..
  • In colloidal sol, gel, arosol & emulsion are clear.
  • Except arosol remaining 3 present in living system.
  • Colloidal system is composed of 2 stages-

(i) Dispersion phase/ Continuous form / Intermicellus

(ii) Dispersed phase/ discontinuous form/ micellus

  • On the basis of these 2 stages, colloids are of following types -

(A) Sol - Dispersion phase is liquid. Dispersed phase is solid. In sol stage protoplasm in less viscous. Sol stage occure in many living cells. It is less granular. Protein chain is more folded.

(B) Gel - Dispersion phase is solid. Dispersed phase is liquid. Protoplasm is more viscous. It is more granular. Protein chain is unfolded.

  • Sol stage provides          - Cyclosis, Brownian movements, High reactivity to protoplasm.
  • Gel stage provides          - Elasticity, Contractibility, Rigidity, Viscosity
  • Sol gel stages are interchangeable, so protoplasm is a reversible colloidal system.
  • Non-living colloids are irreversible.
  • Protoplasm has motion because of cyclosis, brownian movement & amoeboid movement.
  • These movement depends on  - age of cells, amount of water, genetic factors, chemical composition of protoplasm.
  • With increase in age, brownian movement is stoped.
  • So, ultimately it becomes inactive i.e. death of protoplasm.
  • Mg+2 controls sol gel stages.
  • Sol gel conversion is a physico chemical reaction.

(c) Emulsion

  • Two liquids of different density are mixed, e.g. haemolymph.

(d) Aerosol

  • Solid particles are dispersed in gas.

Related Discussions:- Protoplasm

ASSINMENT, HISTORY ON CLASSIFICATION IN BIOLOGY

HISTORY ON CLASSIFICATION IN BIOLOGY

How simple transposition of the great arteries present, How Simple Transpos...

How Simple Transposition of the Great Arteries Present after 30 Days ? A switch operation will have poor results, as the ventricle that has regressed will not be able to mainta

Biodiversity and economics, With the survival and well-being of humans bein...

With the survival and well-being of humans beings so heavily dependent on biodiversity, its economic value assumes considerable importance. For instance the economic value of ecosy

Determine the stages of healing events, Determine the stages of healing eve...

Determine the stages of healing events The healing events are described in 3 stages Stage 1: Wound healing and formation of woven bone (callus) (2 to 6 weeks) Stage 2: La

Explain about pre-market approval application, Question 1: Show the pro...

Question 1: Show the procedures for filing a 510(k) application and a Pre-market approval application for medical devices in the USA. Show out the procedures for filing a

Types of leukemia, Types of Leukemia Leukaemia may be chronic  or acut...

Types of Leukemia Leukaemia may be chronic  or acute and is classified  into  the  following  categories:  i)  Acute Lymphocytic Leukaemia (ALL) This is  the most comm

Can you explain listeriosis, Q. Can you explain Listeriosis? Listeriosi...

Q. Can you explain Listeriosis? Listeriosis is a food borne illness caused by a pathogenic bacterium called Listeria monocytogenes, which is food borne. Listeria monocytogenes

Explain the uses of hydrocolloids, Explain the uses of hydrocolloids In...

Explain the uses of hydrocolloids In particular, hydrocolloids can provide water for increasing the flexibility (plasticizing) of other food components. These can also affect i

Define requirements of protein during surgery, Define Requirements of Prote...

Define Requirements of Protein during Surgery? Negative nitrogen balance is the most common nutritional deficiency related to surgery. Reserves of protein in the tissues and pl

What are the three periods into which interphase, Q What are the three peri...

Q What are the three periods into which interphase are divided? Interphase is the preceding phase to the mitotic division. It is divided into three periods, G1, S and G2 the le

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