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PostPosted: Mon Nov 28, 2005 1:05 am 
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Squid wrote:
Hey. ;)

fzun wrote:
Ok, I need help with my biology homework again XD. I cannot wait until next semester when I won't have this anymore.

Cellular reproduction is the topic this time. (Ignore the weird numbering)

Quote:
3. Compare the structure of prokaryotic chromosomes and eurokaryotic chromosomes.
My book fails to tell us x_x.

Prokaryotes have no nucleus, whereas eukaryotes, of course, do.

Quote:
6. What would happen if cytokinesis took place before mitosis?


The cell would probably split, but only one would have a nucleus, resulting in a polar body. I'm not too sure about this one though.

Quote:
1. List two ways that meiosis differs from mitosis.


Mitosis creates two daughter cells, whereas meiosis creates four. Mitosis creates two cells of the same genetic makeup, but meiosis creates cells with slightly different genetic makeup.

Quote:
6. Eplain why the chromosomes in the haploid cells that are produced by meiosis I look different from those produced by meiosis II.


Meiosis I divides one diploid cell into two haploid cells by separation of homologous chromosomes, but meiosis II divides two haploid cells into four haploid cells by separation of sister chromatids.

Quote:
20. Do asexual organisms have homologous chromosomes? Explain your answer.


Not sure about this.

Quote:
22. Which of the following cells have a diploid number of chromosomes? Explain your answer.
(a) cells in the G1 phase of the cell cycle
(b) cells in the G2 phase of the cell cycle
(c) cells in the M phase of the cell cycle


(a) Diploid. This is a time of major growth.
(b) Diploid. The cell is preparing itself for the M phase.
(c) Yes and no. The cell is diploid at some point in mitosis, but the chromosomes split and are divided into two cell.


Quote:
1. Can mitosis occur in a cell in the absence of cytokinesis? Support your answer. If your answer is yes, provide a description of how the new cell would appear in the G1 phase of the cell cycle.


See the second question up there. It's basically the same.

Quote:
5. For a cell to function efficiently, the magnitude of its surface area must greatly exceed that of its volume. Explain how cell division functions to maintain this relationshiop between surface area and volume and in doing so mantains cell homeostasis.


I think this is like telophase, but I'm not sure.

Quote:
6. The events of mitosis in plans and animals are very similar with the exception of the absence of centrioles in plants. How has the absence of centrioles in plant cells influenced scientists' thinking about the function of centrioles in mitosis?


Scientists believe that centrioles may help organize microtubule assembly, but they are not essential to formation of the mitotic spindle.

As usual, any help would be greatly appreciated and I would love you forever <3


Love me forever.


Squid I love you forever <3. Thanks love.


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PostPosted: Sat Dec 10, 2005 10:24 pm 
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Could someone PLEASE explain the Philips Curve to me (Macroeconomics)? My stupid eco. book explains it the complicated way, and I couldn't find a simple explanation online. Thanks!


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PostPosted: Tue Dec 13, 2005 12:14 am 
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I need simple chemistry help before I can complete my assignment and my braid died.

What is the chemical equation for KOH dissolving in water?


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PostPosted: Tue Dec 13, 2005 3:07 am 
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Your braid is dead? What will you do with your hair? (rimshot)

All simple salts dissolve in water. The best way to think about it is, "what makes up KOH?"

It's called Potassium Hydroxide, right? So there you go.

H2O
KOH ---> K+ + OH-

(except that the H2O should go above the yields arrow, IIRC)

--------------------------

Dragonfire:
http://www.answers.com/phillips%20curve

Basically, as inflation increases, unemployment decreases. Also, vice-versa - as unemployment increases, inflation decreases (eventually leading to no employment and a crash in montary value.)

The Phillips curve does not adequately address the subject of "stagflation," where unemployment is high but inflation is also high (which should be impossible), unless you realize you can move move the curve along one of its two axes. This means that shocks to the system move the curve upwards or sideways, depending on where the shock comes from.

The Phillips curve is so tried-and-true that a lot of economic policies are based off of it, such as using inflationary methods, like slashing interest rates, to decrease unemployment.


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PostPosted: Thu Dec 15, 2005 6:21 am 
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:o omg.. I've ALWAYS wanted to make a topic like this on Idb.. I guess I'll start coming to PPT more often for this :D


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PostPosted: Fri Dec 23, 2005 12:16 am 
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This is just for general knowledge but what are those small appetizer-like snacks you serve at parties? H'odourves? Or something? I can't remember the spelling and I've been looking on the net, on Word and what not and I still can't find it.

Anyone know?


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PostPosted: Fri Dec 23, 2005 12:33 am 
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There's a couple. There's also canapes, which are bite-sized appetizers which can be served either hot or cold.

The spelling is hors d'oeuvres, by the way ;)

Yeah. Hospitality student. So sue me ;P


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PostPosted: Mon Dec 26, 2005 5:26 pm 
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One question: Why do any of you all have homework over Christmas Break?


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PostPosted: Mon Dec 26, 2005 10:36 pm 
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theonlysaneone wrote:
One question: Why do any of you all have homework over Christmas Break?


Projects, exams, general knowledge, etc...

I don't know how anyone can't have homework over the Christmas break.

And thanks Alex! It was bothering me for a while!


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PostPosted: Mon Dec 26, 2005 11:13 pm 
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Ammer wrote:
I don't know how anyone can't have homework over the Christmas break.


I don't.


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PostPosted: Tue Dec 27, 2005 2:12 am 
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Bangel wrote:
Ammer wrote:
I don't know how anyone can't have homework over the Christmas break.


I don't.


Well I'm talking about people more specifically in higher grades, i.e highschool and above.


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PostPosted: Tue Dec 27, 2005 2:26 am 
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Ammer wrote:
Bangel wrote:
Ammer wrote:
I don't know how anyone can't have homework over the Christmas break.


I don't.


Well I'm talking about people more specifically in higher grades, i.e highschool and above.


I never had winter break assignments in high school nor in university. It depends on the area. For us, the semesters ended when winter break began, so there was never a way to present assignments (particularly in university when your schedule changes so drastically). Then again, I went to a school system that didn't even have summer reading assignments, which is supposed to be at least somewhat common, right?


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PostPosted: Fri Jan 06, 2006 3:11 am 
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Need a bit of calculus help. My solution key happened to lose the page I needed. >_<

Maximising Perimeter: What is the smallest perimeter possible for a rectangle whose area is 16 sq in, and what are its dimensions?

Now, I know there may be possible tricks in solving the question, but this chapter is applications of derivatives (groan). I'll need to show the full method.

If anyone can help me, thanks a lot! :)


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PostPosted: Fri Jan 06, 2006 4:18 am 
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Ammer wrote:
theonlysaneone wrote:
One question: Why do any of you all have homework over Christmas Break?


Projects, exams, general knowledge, etc...

I don't know how anyone can't have homework over the Christmas break.

And thanks Alex! It was bothering me for a while!

I have holiday homework for the start of a new school year. They want us to be prepared or some rubbish >.>

I always get homework over the other 3 holidays, though. They're apparently not "holidays", but "term/semester breaks", and we're therefore meant to be studying.

...Though I don't get why they still refer to it as 'holiday homework' :roll:


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PostPosted: Fri Jan 06, 2006 3:26 pm 
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Yoshi wrote:
Need a bit of calculus help. My solution key happened to lose the page I needed. >_<

Maximising Perimeter: What is the smallest perimeter possible for a rectangle whose area is 16 sq in, and what are its dimensions?

Now, I know there may be possible tricks in solving the question, but this chapter is applications of derivatives (groan). I'll need to show the full method.

If anyone can help me, thanks a lot! :)


Pretty sure the answer is 16, but I can't explain it.


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