Sunday, 24 July 2016

CILIA & FLAGELLA (30 Qs)




Cilia and flagella are the two important locomotory organelle in unicellular organisms. Besides this they are present in multicellular organisms for the transport of gametes or metabolic substances. Different kinds of movement in both unicellular organisms and multicellular higher organisms are exhibited due to the presence of these organelles.






1) What is the common term for motile cilia and flagella?
A) Undulipodia
2) What kind of cilia are found over every mammalian cell?
A) Primary Cilia or Non-motile Cilia
3) What are the sensory cellular antennae in photoreceptor and olfactory receptor cells?
A) Cilia
4) What kind of cilia are present in mammalian trachea and fallopian tubes?
A) Motile Cilia
5) What are the protozoans with cilia?
A) Ciliates
6) What is the bundle of microtubules in cilia or flagella?
A) Axoneme
7) What is the motor protein in cilia or flagella?
A) Kinetin
8) Which protein does form bridges between central fibrils and subfibres of a doublet?
A) Dynein
9) Which protein does connect B-A linkers and radial spokes between microtubule doublets?
A) Nexin
10) What are the building blocks of cilia?
A) Tubulin
11) What are the building blocks of flagella?
A) Flagellin
12) Which is the microtubules organizing centre in cilia or flagella?
A) Blepharoplast,  Kinetosome or Basal Body
13) What kind of sensations are perceived by primary cilia in mammals?
A) Chemo-, mechano- & thermo- sensations
14) What are the basal parts of a flagellum?
A) Basal body,  basal plate & rootlets
15) What is the exposed whip like part of a flagellum?
A) Shaft
16) What are the three parts of a flagellar shaft?
A) Sheath,  matrix & axoneme
17) At what angle do the peripheral doublets tilt in a flagellum?
A) 10 degree
18) What kind of locomotory organelles show sweeping or pendular movements?
A) Cilia
19) How are simultaneous movements of flagella described?
A) Synchronous or Isochronous movements
20) How are alternate movements of flagella described?
A) Metachronous movements
21) Which is the flagellated cell in human beings or mammals?
A) Sperm cell
22) What kind of movement is exhibited by bacterial flagella?
A) Rotary movement
23) What kind of movement is exhibited by eukaryotic  flagella?
A) Bending movement
24) What is the driving force for prokaryotic flagella?
A) Protons
25) What is the driving force for eukaryotic flagella?
A) ATP
26) How is the rotary engine of bacterial flagella described?
A) Mot complex
27) What kind of microtubular arrangement is seen in bacterial flagella?
A) 9+0 arrangement
28) What kind of microtubular arrangement is seen in eukaryotic flagella?
A) 9+2 arrangement
29) How are called pairs of peripheral microtubules in cilia or flagella?
A) Doublets
30) How are called individual central microtubules in cilia or flagella?
A) Singlets
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