Lysosomes, Biology

Assignment Help:

LYSOSOMES

Like mitochondrial lysosomes are also  typical membrane bound and dense  fluid filled sac  like cytoplasmic  organelles  of all eukaryotic cells these  however, different  from mitochondria  in their   smaller size  0.08to0.8 in diameter  and typically  spheroidal  ellipsoidal or ovoid shape having  a single   limiting  in units membrane  and containing only  hydrolytic enzymes  in their watery  ,matrix, These  were first  observed and isolated by Nobel  laureate de duve 1949 and named , lysosomes  by him  and novikoff in 1955 .

These  organelles arise as primary  lysosomes  from diastalcisterna  at  the maturing   at the maturing face  of Golgi  complex   units. Each  primary lysosome is known to contain 40to50 hydrolytic enzyme  in an acidic medium,  the protein back bones of these  enzyme are synthesize  by ribosomes, accumulate and glycosylated  conjugated  to carbohydrates  in  endoplasmic  reticulum  and then  transferred  to Golgi  complex  through  transitional vesicles  in the cisternae of Golgi  complex .these  enzyme  are sorted  out and ultimately  packaged  into  primary lysosomes.

Functions of lysosomes: Intracellular  and extracellular  digestion of most biological substance is the sole  function  of lysosomes These are -

1.      Digest liquid  or silid  materials taken  in by cells from extracellular medium  respectively by pinocytosis  and phagocytises  .

2.      Bring  about  breakdown  of organic materials  outside  the cells when poured  out in  extracellular  medium by the  saprozoic  organisms and

3.      Digest worn  out  or unnecessary  parts of the cells or even whole cells by the so called  process of autophagy.


Related Discussions:- Lysosomes

What is atraumatic needles, What is Atraumatic needles Atraumatic need...

What is Atraumatic needles Atraumatic needles with sutures comprise an eyeless needle attached to a specific length of suture thread. There are several shapes of surgical n

Contact osteogenesis, Contact Osteogenesis: In this the osteogenic cells at...

Contact Osteogenesis: In this the osteogenic cells attach to the implant surface and the new (de novo) bone is formed on the implant surface first. The developing bone matrix can d

Chorea, It is found in around 20 per cent cases of ARF and it is a late man...

It is found in around 20 per cent cases of ARF and it is a late manifestation occurring even 3 months after GAS pharyngeal infection. Chorea is triggered by emotional disturbances

What is the meaning of body composition, What is the meaning of Body compos...

What is the meaning of Body composition? It refers primarily to the distribution of muscle, fat, bone and other tissues in the body, and its measurement is often considered as

Invertibreats, genral charecter and classificatin of porifera

genral charecter and classificatin of porifera

Calculate the volume of blood plasma, If one determines the concentration o...

If one determines the concentration of cortisol in the blood plasma to be 10 ugrams/ml and that in a 24 hour period a person excretes 10 mgs of cortisol, calculate the volume of bl

Determine instruments that are required for sterilizations, Determine the I...

Determine the Instruments that are Required For Sterilization? The word sterilization is derived from the Latin word 'Sterilic' meaning unable to produce offsprings. Sterilizat

Explain lyases, Explain lyases These enzymes (code EC 4) cleave C-C,  C...

Explain lyases These enzymes (code EC 4) cleave C-C,  C-O, C-N  and other bonds by elimination, forming double bonds or conversely adding groups  to double bonds. Common names

What are the factors that for influencing photosynthesis, What are the fact...

What are the factors that for influencing photosynthesis also interfere with the gross primary productivity? Mostly water and light, but also mineral salts, temperature and car

Hazards in biology laboratory, The major hazards encountered in the biologi...

The major hazards encountered in the biological lab work are diseases like infections and allergies which are caused by handling live animals. dissections, plant and animal tissues

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