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

What is a retrovirus, It is a category of viruses having RNA genome and rev...

It is a category of viruses having RNA genome and reverse transcriptase enzyme within virus cuspid.

Why is pattern baldness more common in men than in women, Why is pattern ba...

Why is pattern baldness more common in men than in women? Pattern baldness is handled by the allele B. Testosterone interacts with the heterozygous genotype (BB′) to make baldn

What do you understand by metanephridia, What do you understand by Metaneph...

What do you understand by Metanephridia? An excretory-osmoregulatory organ comprising a ciliated funnel, nephrostome, connected to tubules that lead to the external nephridiopo

Placentation, In unilocular ovary with a single ovule tje placentation is??...

In unilocular ovary with a single ovule tje placentation is??

Explain about individual consciousness, Q. Explain about Individual conscio...

Q. Explain about Individual consciousness? The physical brain is not a source of experience as some current neuroscientists now mistakenly believe. While areas of the brain are

What is sulphonylureas, Q. What is Sulphonylureas? Sulphonylureas: Tolb...

Q. What is Sulphonylureas? Sulphonylureas: Tolbutarnide is the mildest and its effect remains for 8 hours hence 2-3 doses need to be taken. Another drug chlorpropamide needs on

Relate mitochondria organelles with eukaryotic cells, Relate Mitochondria o...

Relate Mitochondria organelles with eukaryotic cells Mitochondria are highly specialised organelles in eukaryotic cells. These perform the energy transducing process, and are o

Oxaloacetate to malate, Oxaloacetate to Malate Oxaloacetate to Malate:...

Oxaloacetate to Malate Oxaloacetate to Malate: Oxaloacetate cannot  permeate mitochondria 1 membrane well and it must be transported across the membrane in the form of malate

Biochemistry, tertiary structure of protein

tertiary structure of protein

Leaves give off water vapour, Leaves give off water vapour Use two same...

Leaves give off water vapour Use two same pots of soil, one with a small plant and the other without. Cover the soil in every pot with cardboard as shown in the diagram after w

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