Hello Students: DAY- 20 Evening Coffee with NEET

HELLO STUDENTS: DAY- 20 Evening

INTERESTING FACTS ON CELL: THE UNIT OF LIFE :

18.What kind of ribosome is seen in mitochondria?:

= 70S

19.In 30S and 40S ribosomes,'S' stand for:

= Svedberg's unit

20.RER is frequently seen in cells associated with frequent synthesis and secretion of :

=Protein

21.SER is frequently associated with the synthesis of :

= Lipid

23.A polysome or polyribosomes is /are a chained structure of which organelle?:

= Ribosome

24.In polyribosome,the ribosomes are attach to which RNA?:

= m-RNA

25.Gas Vacuoles are found in :

=Blue -green bacteria, Green photosynthetic bacteria and purple bacteria.

26.A loose sheath of glycocalyx layer is called:

=Slime layer

27.The longest cells in human body are :

= Neurons

28.Who concluded that ,the "Cell wall is a unique structure of plant cells'.?:

= Schwann

29.'Omnis cellula e cellula' was given in the year :

1855

30.An exceptional to cell theory is :

= Fungi

31.Which are considered as a 'Riddle to the Biologist's or 'Puzzle to the Biologist's.:

= Viruses

32.What is the other name for mesosomes?:

= Peripheral bodies

33.Who were first observed mesosomes in 1953?:

= George B Chapman and James Hillier

34.What is the role of mesosomes equivalent to the function of mitochondria?:

= Cellular respiration.

35.Neurons cannot divide because of the absence of cell organelles:

= Centrioles

36.Why RBC are lack of cell nucleus and most of the organelles.The reason is :

= In order to accommodate maximum space for haemoglobin.

Mr.R.Soundarapandian, MSc, MEd, MPhil, 

PG Asst Zoology 
SIR MCTM Boys Higher Secondary School, 

Purasawalkam Chennai-84.