Which of the following is/are used for the spindle fiber formation as microtubule organizing center during cell division?
a) centrioles
b) nucleolus
c) nucleus
d) mitochondria
The mammalian spermatozoon has…
a) a single cilia
b) a single flagellum
c) many cilia
d) two flagellum
The unicellular green alga Chlamydomonas has………
a) two cilia
b) many flagellum
c) one cilia
d) two flagellum
The unicellular protozoan Paramecium is covered with………
a) two cilia
b) a single flagellum
c) a few thousand cilia
d) two flagellum
Which of the following is true about ciliar and flagellar organization of microtubule?
a) nine triplet microtubules surround a central pair of doublet microtubules
b) nine triplet microtubules surround a central pair of triplet microtubules
c) nine triplet microtubules surround a central pair of singlet microtubules
d) nine doublet microtubules surround a central pair of singlet microtubules
In which of the following
eukaryotic cells, mitochondria are absent?
a) earlobe cells
b) kidney cells
c) muscle cells
d) mature red blood cells
Explanation: they were first seen as granules in muscle cells in 1850
