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

Mouth examination of new born, Mouth Inspect and palpate the lips, ...

Mouth Inspect and palpate the lips, gums, tongue, palate and oropharynx. Rule out cleft lip and palate, size of chin if small and receding it  shows micrognathia ind

What are cerebrospinal and meninges fluid, Q. What are cerebrospinal and me...

Q. What are cerebrospinal and meninges fluid? Meninges are the membranes that protect and the enclose central nervous system (CNS). Cerebrospinal fluid is the fluid that separa

Metabolic cataysis, Metabolic Cataysis A large number  of chemical reac...

Metabolic Cataysis A large number  of chemical reaction  occur  every  moment in a cell  to keep it. In the living  state, The rate  if  chemical  reaction normally depends upo

Hermaphroditism, Hermaphroditism You would have completely appreciated...

Hermaphroditism You would have completely appreciated now that sexual reproduction is definitely the more advanced type of reproduction. It gives for combination of genes from

Scentific american article suggests some improvements, The human skeleton h...

The human skeleton has evolved from that of four-legged animals. Unfortunately, the adaptation is far from perfect; thus, our upright posture causes problems like backage and the k

What is isotope switching, It is conversion of antibody class to another re...

It is conversion of antibody class to another resulting from genetic rearrangement of heavy chain same region genes in B cells. Isotope switching is also known as class switching.

Defence mechanisms of the host, Defence mechanisms of the host The hea...

Defence mechanisms of the host The healthy animal is protected from pathogenic organisms present in the environment by virtue of the effective immune mechanism present from bi

Why is it not correct to assert that dna self-replicates, Why is it not cor...

Why is it not correct to assert that DNA self-replicates? DNA is not completely autonomous in its duplication process because the replication does not happen without enzymatic

Do the membranes form only the outer wrapping of cells, Q. Do the membranes...

Q. Do the membranes form only the outer wrapping of cells? Lipid membranes do not form only the outer cover of cells. Cell organelles, such as the Golgi complex, lysosomes, chl

What is a goiter, What is a goiter? What is endemic goiter? How is this pro...

What is a goiter? What is endemic goiter? How is this problem socially solved? Goiter is the abnormal enlargement of the thyroid gland. The goiter appears as a tumor in the ant

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