- cecilia · cecilia’s personal page love ya, girl! never change – i would be nowhere without...

2
Hi! My name is Cecilia Cilia! I’m a graduating senior here at Trachea High, and I thought I might give you a little bit of info about me: I am a eukaryotic celium, and a ‘locomotive appendage’. That means that I am motile, I move. This movement is called undulating, or beating. It’s my job as a cilium living in the trachea, also called the windpipe, to move mucus and debris out of the lungs and up to the mouth. Although I am located in the respiratory system, some celia are found on organisms such as the Paramecium, a protist that moves by way of cilia, on the outer side of the cell membrane. People often mistake me for my best friend, Ella Flagella. It’s true, we are similar in some ways; we are both eukaryotic, and therefore are both made of a ring of nine microtubule doublets surrounding a pair of microtubles in the center (this is called a “9 + 2 pattern”). There are special proteins called ‘dynein arms’ attached to each outer doublet that use ATP to“grab” onto another doublet and move, which causes the motion of the whole celium. ‘Radial spokes’ keep the doublets in their place, but do not constrict their movement. We are both anchored to the cell through a ‘basal body’, a structure that is constructed of 9 microtube triplets, and is similar in shape and structure to the centriole in the cell. The basal body acts as a foundation as the cilium or flagellum grows. We also both contain cytoplasm, and are enclosed by an extension of the plasma membrane. But beyond this, we have quite a few differences. Ella and her flagella friends move in a more whiplike motion, while me and my other celia move like the rowing stroke of a scull. (Crew is actually my favorite sport – I made varsity, first boat this year!) As a rule, I am also much shorter than Ella and her friends. But there is one big pro to being a celium as opposed to a flagellum: I get to see my friends much more often. Usually, there is only one flagellum per cell, propelling that particular cell. Cilia work in teams, all beating in unison to maintain motility. Well, that’s it for now! I hope you enjoyed learning about my everyday life, doing my part both for the cell and for the respiratory system. Check out my yearbook photos and personal profile on the next page, and be sure to sign a little note so I can remember you! GO TRACHEA CLASS OF 2012! - Cecilia

Upload: others

Post on 21-Sep-2020

2 views

Category:

Documents


0 download

TRANSCRIPT

Page 1: - Cecilia · CECILIA’S PERSONAL PAGE Love ya, girl! Never change – I would be nowhere without you! – Shelly Cell I’ll miss you so much. To the best friend I ever had, and

Hi!  My  name  is  Cecilia  Cilia!  I’m  a  graduating  senior  here  at  Trachea  

High,  and  I  thought  I  might  give  you  a  little  bit  of  info  about  me:    I  am  a  eukaryotic  celium,  and  a  ‘locomotive  appendage’.  That  means  

that  I  am  motile,  I  move.  This  movement  is  called  undulating,  or  beating.  It’s  my  job  as  a  cilium  living  in  the  trachea,  also  called  the  windpipe,  to  move  mucus  and  debris  out  of  the  lungs  and  up  to  the  mouth.  Although  I  am  located  in  the  respiratory  system,  some  celia  are  found  on  organisms  such  as  the  Paramecium,  a  protist  that  moves  by  way  of  cilia,  on  the  outer  side  of  the  cell  membrane.    

People  often  mistake  me  for  my  best  friend,  Ella  Flagella.  It’s  true,  we  are  similar  in  some  ways;  we  are  both  eukaryotic,  and  therefore  are  both  made  of  a  ring  of  nine  microtubule  doublets  surrounding  a  pair  of  microtubles  in  the  center  (this  is  called  a  “9  +  2  pattern”).    There  are  special  proteins  called  ‘dynein  arms’  attached  to  each  outer  doublet  that  use  ATP  to“grab”  onto  another  doublet  and  move,  which  causes  the  motion  of  the  whole  celium.  ‘Radial  spokes’  keep  the  doublets  in  their  place,  but  do  not  constrict  their  movement.  We  are  both  anchored  to  the  cell  through  a  ‘basal  body’,  a  structure  that  is  constructed  of  9  microtube  triplets,  and  is  similar  in  shape  and  structure  to  the  centriole  in  the  cell.  The  basal  body  acts  as  a  foundation  as  the  cilium  or  flagellum  grows.  We  also  both  contain  cytoplasm,  and  are  enclosed  by  an  extension  of  the  plasma  membrane.  But  beyond  this,  we  have  quite  a  few  differences.  

 Ella  and  her  flagella  friends  move  in  a  more  whiplike  motion,  while  me  and  my  other  celia  move  like  the  rowing  stroke  of  a  scull.  (Crew  is  actually  my  favorite  sport  –  I  made  varsity,  first  boat  this  year!)  As  a  rule,  I  am  also  much  shorter  than  Ella  and  her  friends.  But  there  is  one  big  pro  to  being  a  celium  as  opposed  to  a  flagellum:  I  get  to  see  my  friends  much  more  often.  Usually,  there  is  only  one  flagellum  per  cell,  propelling  that  particular  cell.  Cilia  work  in  teams,  all  beating  in  unison  to  maintain  motility.  

Well,  that’s  it  for  now!  I  hope  you  enjoyed  learning  about  my  everyday  life,  doing  my  part  both  for  the  cell  and  for  the  respiratory  system.  Check  out  my  yearbook  photos  and  personal  profile  on  the  next  page,  and  be  sure  to  sign  a  little  note  so  I  can  remember  you!  GO  TRACHEA  CLASS  OF  2012!  

- Cecilia

Page 2: - Cecilia · CECILIA’S PERSONAL PAGE Love ya, girl! Never change – I would be nowhere without you! – Shelly Cell I’ll miss you so much. To the best friend I ever had, and

 Cecilia  

The  graduating  class  of  Trachea  High,  2012.  That’s  me  in  the  middle.  Ugh,  I  look  horrible!  But  at  least  they  decided  to  print  the  picture  in  color…  

CECELIA’S FAVORITE SONGS:

1. “Cecilia” by Simon & Garfunkel

2. “Loco-Motion” by Kylie Minogue

3. “The Stroke” by Billy Squier

4. “We Got The Beat” by The Go-Go’s  

A  detailed  self-­‐portrait  I  did  for  art  class.  Part  is  a  photograph,  part  is  a  drawing.  

My  cousins  Claire,  Charlotte,  Chris,  Carrie,  Charles,  Carmen,  Carson,  Chet,  et  cetera,  and  their  home  on  a  Paramecium.  

I  like  to  think  of  my  friends  and  I  as  a  crew  team  even  when  we’re  not  rowing  –  we  can’t  function  unless  we’re  all  beating  in  unison!    

CECILIA’S PERSONAL

PAGE

Love ya, girl! Never change – I would be nowhere without you! – Shelly Cell

I’ll miss you so much. To the best friend I ever had, and a girl who really knows how to put things in motion…. I <3 U Cecilia! - Ella

Thanks  for  always  waving  to  me  in  the  hallway!    -­‐  Millie  Pili