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Connective Tissue Cells
Dr. Cecil Fox/National Cancer Institute

Cells are the fundamental units of life. Whether they be unicellular or multicellular life forms, all living organisms are composed of and depend on cells to function normally. Not all cells however are alike. There are two primary types of cells: prokaryotic cells and eukaryotic cells. Eukaryotic cells have a true nucleus (distinct area that houses DNA) and are generally more complex than prokaryotic cells. Examples of eukaryotic cells include animal and plant cells. Bacteria and archaeans are prokaryotic cells. Some interesting facts about cells include:

  • There are anywhere from 75 to 100 trillion cells in the body.

  • There are more bacterial cells in the body than human cells.
  • Prokaryotes are the most primitive forms of life on earth.
  • Cells have varying life spans.
  • Cells commit suicide.

For additional information about cells see: Cell Structure, Cellular Respiration and Cell Anatomy Quiz.

Comments

November 13, 2009 at 6:59 am
(1) ASENATH KERUBO says:

Am shocked that there are more bacterial cells in my body than body cells!!!!!How come

December 27, 2009 at 2:50 am
(2) The viewer says:

U noe they r very interesting

March 22, 2011 at 3:41 pm
(3) Enriquo says:

yeaaaaa cells are awesome

March 30, 2011 at 7:01 pm
(4) Ethan says:

i like cells and potatoes

April 14, 2011 at 12:22 pm
(5) bobby says:

cells r wierd…

May 11, 2011 at 8:10 pm
(6) john says:

hi hhhhhhhhhhhhhhhhhhhhhiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii :]

May 18, 2011 at 5:20 pm
(7) loveth iriele says:

what re the main importance of a cell

September 28, 2011 at 12:11 pm
(8) l;gsdk says:

hi everybody

September 28, 2011 at 1:22 pm
(9) rgfhwegu says:

hi wats up

October 10, 2011 at 1:53 pm
(10) Daizy says:

This is on another website man!!!! but still pretty cool!!! NOTNOTNOT:):):)

November 22, 2011 at 8:33 am
(11) tony says:

Cells are realllll!

December 1, 2011 at 9:52 pm
(12) Jake says:

cells are great and so are watermelon

December 6, 2011 at 5:26 am
(13) sadaf says:

thats so amazing about cells.

January 26, 2012 at 9:14 am
(14) Nunya says:

This is sooo darn cooo

February 24, 2012 at 2:01 pm
(15) Kylee says:

uhhhh why do they commit suicide?????

February 29, 2012 at 1:49 pm
(16) lisa says:

cells are wierd

March 4, 2012 at 6:08 pm
(17) Jack says:

cells are ami zing i love them if i could i would lcik my elbow

April 9, 2012 at 6:35 pm
(18) Peyton says:

I was amazed that cells can commit suicide

April 11, 2012 at 8:35 am
(19) dabombshnauggle says:

cells are too stupid to comit suicide.

April 11, 2012 at 8:38 am
(20) Mr.Mc-loven says:

agreed with dabombshnauggle

April 11, 2012 at 8:42 am
(21) dixienormous says:

dabombshnauggle sounds like a smart kid.

April 11, 2012 at 8:48 am
(22) Ben Dover ;) says:

wow youre a genius dabombshnauggle.

April 12, 2012 at 1:17 pm
(23) Selena Gomez says:

Dabombshnauggle sounds like a stud ;)

April 15, 2012 at 8:24 pm
(24) kaylee says:

of course cells r cool they help u live!!!!

April 18, 2012 at 8:05 pm
(25) greenerman1 says:

Cells are the weirdest thing to commit suicide. Plus, one dude spelled commit wrong!

May 23, 2012 at 10:09 am
(26) RAYNA SAYS: says:

CELLS ARE VERY GOOD

June 2, 2012 at 2:46 am
(27) angel says:

lol ! :P
i can stop my laugh ! :D
cells suicide ! :D
hahaha..
strange ! :P :) :D
so from now on we’d better not differebtiate between cells and humans rather the youth ! :P ;)

July 17, 2012 at 6:33 am
(28) imacheerleader! says:

:D :D :D cells r weird

September 24, 2012 at 10:06 am
(29) dj says:

goog nuclus

October 2, 2012 at 10:15 am
(30) mason says:

cells are cool

October 9, 2012 at 1:15 pm
(31) cray cray says:

omg doing this for a science project reading the comments with my friend and am cracking up!!

October 9, 2012 at 1:17 pm
(32) Smellma Pitss!!!! says:

Dabombsnauugle your sooooo cooollll!!!!!!!!!! Aahahahhaahahaa. No. But really. It is stupid. And i am very serious about your answer. NOTTTTTTTT.

October 23, 2012 at 12:06 pm
(33) Taimur Khan says:

Oh cool facts. But I don’t like the fact which states
that bacteria inhabit our bodies. I can’t digest it

November 3, 2012 at 10:08 am
(34) Anvi says:

*YOU ALL ARE MAD…..!!!!*

November 4, 2012 at 2:10 pm
(35) Bobyy tab 101 says:

:) cells rock they are every thing …. you need them and their good ……… website is ok …… WOW cells can commit suicide !!! why ?? and nice comments kool Meat Ball out :D

January 9, 2013 at 12:53 pm
(36) anonymous says:

cells are the most interesting organisms I’ve ever known!! :)

January 10, 2013 at 8:55 am
(37) rthgtdrrt says:

YAY CELLS KILL THEM SELF

CELL: KAMAKAZIIIIIIIIIIIIIIIIII

January 11, 2013 at 12:14 pm
(38) ur mom says:

i love cells babies

April 15, 2013 at 9:19 am
(39) Justin Bieber says:

I Luv Cells!

*NEW SONG=CELLS*

FTW!!!!!

June 8, 2013 at 8:20 pm
(40) Adolph says:

Each Year thousands of seniors endure winter travel to visit family and friends.
These days, several flights to Geneva are available by
leading carriers. Do not resign to your fate, and utilize these vital minutes to prepare yourself to handle the situation.

September 26, 2013 at 9:52 pm
(41) Khalil Smith says:

how does a cell kill itself

October 8, 2013 at 1:37 pm
(42) cassandra says:

WOW JUST…… WOW

November 18, 2013 at 3:20 pm
(43) dae'bonquiqui says:

Your mooooooommmmmmmm

November 19, 2013 at 8:01 pm
(44) Dylan says:

lets sea how many puns we can make

January 9, 2014 at 6:30 pm
(45) Haley says:

I knew there where so meny thing with cells I didnt know but this a 6th grader talking this stuff rocks

January 17, 2014 at 3:08 pm
(46) joseee says:

this is helllaaaaa gayyyyy !!!!!!! -.-

January 19, 2014 at 7:38 pm
(47) Shumaela says:

ya, i knw Lysosome r suicide bags
A cellllll organelleeeeeeeeee

January 28, 2014 at 8:04 pm
(48) amber says:

Cells creep me out a little but are very interesting doee a lil piece~~~!! <3 :)

March 3, 2014 at 2:39 pm
(49) yugh says:

cells are stupid and are cool at the same time

March 13, 2014 at 8:39 pm
(50) Sunshine says:

Cells r very coollll nd freaky

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