Jump to content


Welcome to BrainDen.com - Brain Teasers Forum

Welcome to BrainDen.com - Brain Teasers Forum. Like most online communities you must register to post in our community, but don't worry this is a simple free process. To be a part of BrainDen Forums you may create a new account or sign in if you already have an account.
As a member you could start new topics, reply to others, subscribe to topics/forums to get automatic updates, get your own profile and make new friends.

Of course, you can also enjoy our collection of amazing optical illusions and cool math games.

If you like our site, you may support us by simply clicking Google "+1" or Facebook "Like" buttons at the top.
If you have a website, we would appreciate a little link to BrainDen.

Thanks and enjoy the Den :-)
Guest Message by DevFuse
 

Photo
- - - - -

Biology


  • This topic is locked This topic is locked
76 replies to this topic

#41 shant93

shant93

    Newbie

  • Members
  • Pip
  • 3 posts

Posted 23 October 2007 - 12:43 AM

Somebody said:

If cells are split into two equal parts, then why are babies not born microscopic

CELLS GROW
  • 0

#42 yukino21

yukino21

    Newbie

  • Members
  • Pip
  • 5 posts

Posted 09 November 2007 - 04:20 PM

easy..

11:59..because if its half full on that time it will divide the next minute..which is 12:00 then the saucer will be full...
  • 0

#43 hipowertech

hipowertech

    Junior Member

  • Members
  • PipPip
  • 65 posts

Posted 09 November 2007 - 04:53 PM

11:59?
  • 0

#44 eleftheria

eleftheria

    Newbie

  • Members
  • Pip
  • 7 posts

Posted 16 November 2007 - 03:01 PM

the thing is... before a cell divides, it has doubled its DNA as well as its size, so that the daughter cells are equal to each other in volume and in the number of chromosomes (in the cell core). so the plate must be half full at 11:59 (given the fact that it s full at 12:00) before the cells start growing again for the next division, which will take part at 12:00 (from 11:59:00 until 11:59:99 we will have x number of cells, and at 12:00:00 we will have 2x number of cells, but the total volume of the cells at 11:59:99 will be the same as at 12:00:00). after that the new cells must grow again but there will be no more space in the plate (and they will start falling off i guess). and that is if we accept that the cells of the plate grow only in 2 dimensions
  • 0

#45 lsorrells

lsorrells

    Newbie

  • Members
  • Pip
  • 3 posts

Posted 19 November 2007 - 09:40 PM

Actually growth precedes division so that one minute earlier the plate whether half the number (right before division) or the same (right after division) would still be half full at 11:59 if it were full at 12:00
  • 0

#46 ravenoox

ravenoox

    Newbie

  • Members
  • Pip
  • 2 posts

Posted 30 November 2007 - 06:44 AM

how big was the sauser and how many did we start with?
  • 0

#47 rikabeau

rikabeau

    Newbie

  • Members
  • Pip
  • 12 posts

Posted 01 December 2007 - 01:34 PM

It doesn't need to say what the start time is. The answer is 11:59, because in the next minute, they all double and it was half full, so it completely fills up in the next minute, at 12:00. It was soooo obvious. No, I did not read all of everyone else's solutions. I have, indeed, heard this one before.
  • 0

#48 Bigbear

Bigbear

    Newbie

  • Members
  • Pip
  • 1 posts

Posted 02 December 2007 - 01:37 PM

Not to be difficult or anything however the answer is 6.00. A nominclature of time would be represented as 12:00, or 12 O'clock.
Your riddle states the plate was half full at 12.00, representing a number carried to 2 decimal points, therefore the answer is 6.00
  • 0

#49 tahirawan11

tahirawan11

    Newbie

  • Members
  • Pip
  • 5 posts

Posted 09 December 2007 - 11:08 PM

11.59
  • 0

#50 Jerry0923

Jerry0923

    Newbie

  • Members
  • Pip
  • 1 posts

Posted 11 December 2007 - 09:54 PM

A dividing cell cannot create mass greater than its mass prior to division. If the dish has one liter contained in it than it can only have one liter in it at 5:00 10:23 or 11:59; it must be full from the beginning to be full at 12:00.
  • 0




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users