What are flagella and cilia, Biology

Assignment Help:

Q. What are flagella and cilia and how do these structures acquire movement? What are some examples of flagellated and ciliated cells in humans?

Flagella and Cilia are structures found in some prokaryotes as well in some eukaryotic cells. They play protection, nutrition and movement roles for the cell. In eukaryotic cells of protists and animals they originate from centrioles that migrate towards the plasma membrane and differentiate into structures projected outside the cell. Each flagellum or cilium is made of nine peripheral pairs of microtubules and one central pair all covered by membrane in bacteria, flagella are made of a protein named flagellin and there can also be fimbria made of pilin

In the fixation base of each flagellum or cilium in the plasma membrane there are proteins that work as molecular motors providing movement for these structures with energy spending. Due to this energy spending flagellated or ciliated eukaryotic cells have a large number of mitochondria.

In humans ciliated cells can be found, for instance, in the tracheal and bronchial epithelium. In these tissues the cilia have the defensive function of sweeping mucous and foreign substances that go into the airways. Sperm cells are a typical instance of flagellated cells, their flagellum is the propulsion equipment for the movement to the ovule.


Related Discussions:- What are flagella and cilia

Define uses of microbes in industry, Normal 0 false false ...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

Describe what are non degradable pollutants, Question : (a) Briefly de...

Question : (a) Briefly describe what are non degradable pollutants? (b) What do you meant by ichthyosarcotoxic fishes and give two examples of ichthyosarcotoxic fish poiso

Alteration of turgor of guard cells, Alteration of Turgor of Guard Cells ...

Alteration of Turgor of Guard Cells There are two ways in which the relative turgor of guard cells may be altered. A decrease in osmotic potential or A decre

Glucose, Glucose is a six-carbon single sugar; It is the most common energ...

Glucose is a six-carbon single sugar; It is the most common energy source.

Determine the procedure of rothera test, Rothera's Test It is highly se...

Rothera's Test It is highly sensitive for both acetoacetic and acetone. Although it is one of the oldest methods still it is widely used. Procedure: - Take about 5ml of

Energy yield of citric acid cycle , Each of the three NADH molecules formed...

Each of the three NADH molecules formed per turn of the cycle yields 3 ATPs and the one FADH2 yields 2 ATPs by oxidative phosphorylation (whereas some measurements indicate in whic

Explain plant-filling tissue -parenchyma, Which is plant tissue responsible...

Which is plant tissue responsible for the filling of the space between other tissues? Plant-filling tissue is basically called as parenchyma and the plant parenchyma can be div

Describe atg or aug, ATG or AUG: The codon for the methionine; the transla...

ATG or AUG: The codon for the methionine; the translation initiation codon. generally, protein translation can only start at the methionine codon (although this codon might be fou

Distinct ecological importance of species, The distinct ecological importan...

The distinct ecological importance of species supports functional diversity and has a direct bearing on the species composition of the site, and therefore on overall biodiversity.

What is ecology?, What is Ecology? The Ecology is the field of Biology ...

What is Ecology? The Ecology is the field of Biology that studies the relationship between living beings and between living beings and the environment.

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