Science & Mathematics - 9 November 2007

I don't get it. My teacher says haploid gametes (sex cells) undergo Meiosis.

BUT, the internet says diploid cells undergo Meiosis. Gametes are NOT diploid, they are haploid, right? So, I don't get which cells undergo meiosis. Body cells or sex cells??

I know diploid body cells undergo MITOSIS.

Also, the purpose of meiosis is to produce gametes, so how does it make sense that gametes undergo meiosis, to produce gametes?? Please is there anyone that can help me explain plz, I'd really really appreciate it greatly.

2007-11-09 14:28:09 · 6 answers · asked by Anonymous in Biology

2007-11-09 14:24:27 · 3 answers · asked by daniel d 1 in Physics

1. f(x)=x^2(x–7)^6 / (x^2+4)^7

2. f(x)=x^4cosh(x^3)

Can you find the derivative of these functions??

2007-11-09 14:20:55 · 3 answers · asked by Anonymous in Mathematics

Simplify the Boolean function using 5 variable Kmap:
F(A,B,C,D,E) = E (0,2,4,6,9,13,21,23,25,29,31)
(Note : E refers to Sigma)

Please help!

2007-11-09 14:18:36 · 2 answers · asked by Anonymous in Mathematics

A rancher wants to fence in an area of 3000000 square feet in a rectangular field and then divide it in half with a fence down the middle parallel to one side. What is the shortest length of fence that the rancher can use?

2007-11-09 14:18:31 · 2 answers · asked by Rachel 1 in Mathematics

1.) 3^4 divided (9^2 - 3^4)

2.) 3/4 (2/3)^3

3.) Find one-third of one-half.

2007-11-09 14:16:08 · 6 answers · asked by cat 2 in Mathematics

Which of the following objects does not emit light?
a burning coal
the sun
the moon

a candle flame

2007-11-09 14:14:30 · 6 answers · asked by Anonymous in Astronomy & Space

solve y

2007-11-09 14:12:23 · 23 answers · asked by tman 1 in Mathematics

Does spaceship used to go inside of blackhole?

2007-11-09 14:10:39 · 23 answers · asked by bijay 1 in Astronomy & Space

What type of flower is this, i am just curious because they are growing everywhere in my yard .

Here is a link to a pic of the flower :

http://www.flickr.com/photos/13606906@N04/1940835630/

Thank you !!!

2007-11-09 14:10:00 · 2 answers · asked by A 5 in Botany

a. 10

b. 8

c. 4

d. 6

e. 2

2007-11-09 14:06:43 · 5 answers · asked by Cass 1 in Biology

2007-11-09 14:06:13 · 3 answers · asked by cjbass21 1 in Mathematics

I am currently taking a Algebra Elementary remedial course. I am failing most of my exams in that class and some of the guys in the class get the material fairly easy. I admit i haven't done my best to reinforce the material at home. I need to pass the exam coming up or I will be kicked out of my school which is horrible. I wish math was a human so I can kill him because he is about to ruin my life. As you can imagine I floated through the math classes in my middle school and high school. I was foolish enough to turn my back on math and now the jerk is going to ruin my dreams. I need to some how learn the material for the test so I can ace it but I don't think I can do it.


Any suggestions on what i should do?

I hate teachers and I don't like being involved with a tutor because of social problems to work out.

2007-11-09 14:03:00 · 9 answers · asked by TheMiddleisSafe 3 in Mathematics

1. urine normally has a pH of 6.0. If a patient eliminates 1800 mL of urine per day, how many moles of H+ were eliminated:
1. 1.8 x10^3 mol
2. 42 mol
3. 1.8x10^-6 mol
4. 1.8 x 10^-7 mol

2.what is the hydronium ion concentration is a solution having a pH of 0.050 at room temperature?
1. 3.00M
2. 0.951M
3. none of these
4. 2.00 x 10^-13 M
5. 0.891M

3. What is the pH of a solution labeled 0.00013M HNO3?

1. 10.00
2. 11.11
3. 4.11
4. 2.89
5. 3.89

4. What is the pH of an acid solution obtained by mixing 200mL of 0.0155M H2SO4 and 300mL of an 0.210M HCI solution? assume all of the acids dissociate.

1. 1.2
2. 0.460
3. 1.9
4. 0.523
5. 1.16
6. 2.2
7. 0.859

2007-11-09 14:02:29 · 2 answers · asked by Anonymous in Chemistry

2007-11-09 14:00:52 · 8 answers · asked by wats2004 2 in Mathematics

centrosomes migrate to opposite poles
the nuclear envelope breaks up
tetrads form and crossing over occurs
tetrads line up on the midline of the cell
sister chromatids separate and migrate to opposite poles

2007-11-09 13:59:25 · 4 answers · asked by HondaFan 1 in Biology

log 7 sqrt 7
answer = 1/2

how???

2007-11-09 13:57:12 · 3 answers · asked by B K 1 in Mathematics

2007-11-09 13:56:56 · 4 answers · asked by Anonymous in Biology

telophase
metaphase
anaphase
interphase
prophase

2007-11-09 13:56:21 · 5 answers · asked by HondaFan 1 in Biology

G1
the mitotic phase
the S phase
G2

2007-11-09 13:55:28 · 1 answers · asked by HondaFan 1 in Biology

"...50.0 to 500.mL 0.0375% w/w H2O2 solution over three hours..." i don't understand the language of chemistry!!!

2007-11-09 13:54:34 · 1 answers · asked by Anonymous in Chemistry

Ok so I need help understanding how to do indirect proofs. I'm so confused. :/

Given: quad. EFGH in which m. of angle EFG=93; m. of angle FGH=20; m. of angle GHE=147; m. of HEF=34
Prove: EFGH is not a convex quad


My teacher wants it in a 5 listed proof exactly like this:
1. Assume temporarily that....
2.Then....
3.But this contradicts the known or given fact that...
4.Therefore are temporary assumption that... .... is false.
5. It follows that...

PLEASE if you are nice and are good at indirect proofs AIM me, my SN is xreactions. PLEASE HELP, Thanks

2007-11-09 13:54:14 · 2 answers · asked by Anonymous in Mathematics

2
23
44
46

2007-11-09 13:53:51 · 5 answers · asked by HondaFan 1 in Biology

What does n= please show how you got this answer

2007-11-09 13:52:13 · 8 answers · asked by tman 1 in Mathematics

2007-11-09 13:49:17 · 7 answers · asked by Anonymous in Chemistry

2007-11-09 13:48:43 · 10 answers · asked by bznsman 1 in Astronomy & Space

I got the answer to the tension part of the question. Tension = 4.78e-3 N. Now, what is the charge on each ball?

Two identical, small insulating balls are suspended by separate 0.37-m threads that are attached to a common point on the ceiling. Each ball has a mass of 4.4 x 10-4 kg. Initially the balls are uncharged and hang straight down. They are then given identical positive charges and, as a result, spread apart with an angle of 51o between the threads. Determine (a) the charge on each ball and (b) the tension in the threads.

2007-11-09 13:46:00 · 0 answers · asked by krystal_michele 1 in Chemistry

When 50mL of aqeous HCl was mixed with 50mL of NaOH (in excess), the temperature of the solution increased from 25C to 32.41C. The reaction is...
NaOH(aq) + HCl(aq) --> NaCl(aq) + H2O(aq).
change in heat= -57.3kJ
What is the molarity of the original HCl solution?
Assume the heat capacity of the solution is the same as pure water (4.184J/g*C), the density of the solution is 1g/mL, and there is no loss of heat to the surroundings

2007-11-09 13:45:34 · 1 answers · asked by triphip2 4 in Chemistry

A
B
AB
O
Rh +
Rh -

2007-11-09 13:37:28 · 2 answers · asked by Smile 3 in Biology

2007-11-09 13:37:15 · 3 answers · asked by Anonymous in Mathematics