Intracellular digestion, Biology

Assignment Help:

Intracellular Digestion

We all know that unicellular organisms do not have a separate alimentary canal system. All the functions of life are carried out inside a single cell. Food is taken in directly into a cell by phagocytosis/endocytosis and then with the help of enzymes digested in a food vacuole. Figure shows the process of endocytosis in Amoeba.

1216_Intracellular Digestion.png

Figure: Digestion in amoeba

Similar intracellular digestion occurs in sponges, some coelentrates, ctenophores and turbellarians. Although the process is called intracellular digestion, the food material is actually separated from the rest of the cellular material by a membrane which it can cross after digestion. In organisms such as cnidarians and platyhelminths, a gut or enteron is present and here along with extracellular digestion where enzymes are secreted into the cavity, intracellular digestion also takes place within the cells that line the ca2ity. However, in annelids and molluscs more extracellular than intracellular digestion takes place. Digestion is entirely extracellular in nematodes, insects, echinoderms and vertebrates.


Related Discussions:- Intracellular digestion

What is plant transpiration, What is plant transpiration? What are the two ...

What is plant transpiration? What are the two main types of plant transpiration process? Which of them is more significant in volume? Transpiration is the loss of water from th

Apsirin determination, Indirect determination: By determining the weight...

Indirect determination: By determining the weight of the filler on the dried filter paper you can calculate the weight of aspirin in each tablet: weight of acetylsalicylic ac

Determine the photographic analysis, Photographic Analysis Documentatio...

Photographic Analysis Documentation is critical in any clinical procedure and more importantly in this field where due to the cost of the treatment involved, there is little ma

Define regulation of intracellular ca concentration, Define Regulation of i...

Define Regulation of intracellular Ca concentration? The cytoplasmic calcium concentration is regulated by a series of calcium pumps, which either concentrate calcium ions with

Coadapted communities, From your studies in ecology, you must be aware that...

From your studies in ecology, you must be aware that most ecosystems are quite complex consisting of several habitats and that habitats in turn are composed of microhabitats. Each

Explain the metabolic aberrations of underweight, Explain the Metabolic Abe...

Explain the Metabolic Aberrations of Underweight? When energy intake falls below the minimal requirements, the body responds with an orderly physiologic adaptation involving th

Treatment of congestive cardiac failure, Q. Treatment of congestive cardiac...

Q. Treatment of congestive cardiac failure? A judicious and careful co-ordination between oxygen support, drug therapy and nutrient intake can help in alleviating majority of t

Types of lysosomes, TYPE S OF LYSOSOMES (1 )      Primary Lysosomes ...

TYPE S OF LYSOSOMES (1 )      Primary Lysosomes or storage granules or protolysosome - The primary lysosomes are smaller in size, they contain hydrolytic enzyme in the form

Cardiac muscles, CARDIAC MUSCLES - The cardiac muscles are found in ...

CARDIAC MUSCLES - The cardiac muscles are found in the wall of the heart and in the wall of large veins (e.g., pulmonary veins and superior vena cava) where these veins en

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