Are protozoans presenting pulsatile, Biology

Assignment Help:

Q. Are protozoans presenting pulsatile or contractile vacuoles easily found in fresh or in salt water?

Fresh water is the less concentrated of solutes than sea water and it fresh water tends to be less concentrated than the intracellular environment making cells to swell. Sea water on the other hand since it is very concentrated tends to dehydrate the cell.

The vacuoles of protozoans are interior structures specialized in water storage that when necessary liberate water to the cytoplasm. Vacuoles thus can reduce the cytoplasm for it to enter into osmotic equilibrium with the environment. Protozoans of fresh water then need vacuoles more since their intracellular is hypertonic in relation to the external. Without the dilution mechanism provided by the vacuoles protozoans of fresh water would absorb too much water and would die.


Related Discussions:- Are protozoans presenting pulsatile

Steroid and thyroid hormones, Steroid and Thyroid Hormones Cytoplasmic...

Steroid and Thyroid Hormones Cytoplasmic receptors for steroids are proteins with two subunits that bind to the steroid molecules. When both receptor sites are occupied by the

Why the depicted food web is not complete, The depicted food web is not com...

The depicted food web is not complete, mainly because:  a. The number of producers is less than the number of consumers. b. There are no decomposers. c. Only secondary co

Determine the prosthetic planning, Determine the prosthetic planning Co...

Determine the prosthetic planning Complete prosthetic planning has to be done and the implants planned accordingly. Thereafter the surgical phase should be carried out. Once th

Mitosis and meiosis, briefly desribe the eggs and follicles in rabbit

briefly desribe the eggs and follicles in rabbit

Estimate the molar mass of protein, Estimate the molar mass of protein? ...

Estimate the molar mass of protein? An aqueous solution of the protein bovine serum albumin, containing 2:00 *10 -2 g of protein per cubic centimeter, has an osmotic pressure

State in brief about the fungi, State in brief about the Fungi It is h...

State in brief about the Fungi It is heterotrophic plants, larger than the bacteria. Those that live on the dead tissues of organic substances are called saprophytic. They pla

Explain about extra low interstitial, Explain about Extra low Interstitial ...

Explain about Extra low Interstitial Extra low Interstitial (ELI) contains low levels of oxygen dissolved in interstitial sites in the metal. Lower amounts of oxygen and iron i

Define mobilization of bone calcium and phosphorous, Define Mobilization of...

Define Mobilization of bone calcium and phosphorous? It is now firmly established that vitamin D 3 is metabloized first in the liver to 25-hydroxyvitamin D (25 OH- D) (calcicl

Social basis of primitive life, Social Basis of Primitive Life: In th...

Social Basis of Primitive Life: In the previous section, we gave you a glimpse of  how the primitive human beings faced the problems of day to day existence and found some so

Name the material used in bioinert, Bioinert Metals:-  Commercially pur...

Bioinert Metals:-  Commercially pure titanium/ titanium alloys Ceramics:-  Aluminum oxide, zirconium oxide

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