Science & Mathematics - 16 November 2007

Please include these key words
base pairs
Mutation
Amino acids

2007-11-16 08:06:17 · 1 answers · asked by Anonymous in Medicine

2007-11-16 08:03:52 · 1 answers · asked by ZACK 1 in Other - Science

I'm doing a report on nitrogen and i really need an A.

2007-11-16 08:03:16 · 6 answers · asked by Anonymous in Chemistry

Airplane departed from A at noon and arrived to B at noon.
Without delay airplane departed from B at noon and arrived to C at noon.
Without delay airplane departed from C at noon and arrived to A at noon of the next day.

Second identical airplane provided similar servce in opposite direction. Second airplane departed from A at noon and proceeded to C, and then to B.

What are arrival/departure times at cities C and B of the second airplane?

2007-11-16 08:03:16 · 6 answers · asked by Alexander 6 in Mathematics

In the coordination compound [Pt(NH3)2Cl2], the coordination number and oxidation number of the central atom are, respectively,
a. 2, 0.
b. 4, +4.
c. 5, 0.
d. 4, +2.
e. 6, +2.

2007-11-16 08:01:50 · 4 answers · asked by Anonymous in Chemistry

1. The square of 5 more than a number.



2. A square has sides of length 3x-2cm. Express the area of the square as a polynomial.

2007-11-16 08:01:38 · 7 answers · asked by lele 2 in Mathematics

2007-11-16 08:01:09 · 7 answers · asked by Joseph M 1 in Earth Sciences & Geology

Here is the full question:
( I couldn't fit it up top.)
Biologists have been able to keep isolated chloroplasts or mitochondria alive for a few hours or days. Can these structures be considered alive?
Any help would be great!

2007-11-16 07:59:18 · 10 answers · asked by Cowgirl8 2 in Botany

a 3,5,7
b 4,4,8
c 9,3,14
d 1,2,3

2007-11-16 07:55:16 · 8 answers · asked by Anonymous in Mathematics

Are these terms tautalogical formulations? If so, how?

Love jack

2007-11-16 07:54:33 · 3 answers · asked by Jack 5 in Biology

Some people say there is life on moon and some say no there isn't life on the moon.

2007-11-16 07:54:13 · 30 answers · asked by Sarah M 1 in Astronomy & Space

l am doing a essay on it. please responde before sunday thanks

2007-11-16 07:52:26 · 3 answers · asked by Sakura 2 in Zoology

Each ordered pair is from an inverse variation. Find the constant of variation.

(0.2, 6)


(5/7,2/5)



Suppose x and y vary inversely. Write a function that models each inverse variation.

x=7 when y=2

x=-3 when y=8

x=1 when y=0.8

x=3/5 when y =5

x= -1/3 when y = 9/10

2007-11-16 07:48:14 · 2 answers · asked by Tabby 2 in Mathematics

Why does the reaction of Chromium and HCl turn the solution to green? And why does the reaction of Chromium and H2SO4 (sulfuric acid) turn the solution to bluish green? Does anyone know???

2007-11-16 07:47:40 · 3 answers · asked by curious 1 in Chemistry

What is average speed of the family of giraffes?

2007-11-16 07:45:31 · 4 answers · asked by Alexander 6 in Mathematics

I can't figure this one out.

2007-11-16 07:44:40 · 5 answers · asked by Anonymous in Biology

Which of the following statements are true for the reaction


HC2H3O2(aq) + KOH(aq) →




a) Water is a product

b) When balanced the coefficient of OH->(aq) is 1

c) The molecular equation is the net ionic equation

d) H+(aq) does not appear in the net ionic equation

e) H2O(l) appears in the net ionic equation



Examples of species are (aq) (s) (l) etc.


there can be more than one correct answer

2007-11-16 07:44:13 · 3 answers · asked by Anonymous in Chemistry

I don't get how it works!

2007-11-16 07:44:09 · 5 answers · asked by Anonymous in Mathematics

I would be creating more voltage, less current, and less resistance. That would create more heat. How can I test the linear power supply safely without everything being so ****** hot.

2007-11-16 07:40:24 · 7 answers · asked by Infinite Resistance Ω 2 in Engineering

This is about the theory of evolution. If we evolved from apes, or fish or whatever, how did that very first baby, the very first, how did it live? How did it learn to survive? Being young it could not have reproduced and adapted. Does this not prove that there had to be some higher power that created humans?

2007-11-16 07:39:45 · 9 answers · asked by Clannad 2 in Biology

i will be thankfull if U wright the burning formoula of Mg,P &S too. :)

2007-11-16 07:38:31 · 2 answers · asked by ZiZi 1 in Chemistry

Let's make the assumption that the rate at which a person experiences time, or how fast time seems to "fly," depends on how much time the person has previously experienced.

More the the point, let's say that someone is born on January 1, 2000. A ball which had been held at a height in a uniform gravitational field, is dropped and starts to fall. The person's first year of life corresponds to the ball falling though the first meter.

The interval of calendar time from 1 Jan 2001 to 1 Jan 2002 corresponds to the ball's drop from one meter to two meters below the release point. And so on.

The idea is that each meter the ball drops corresponds to a calendar year of the child's life, but, rather than being proportional to the child's calendar age, the cumulative time in which the ball has been falling is proportional to the child's psychological age.

Assume the person lives to a calendar age of 72. At what age is his life half over, psychologically speaking?

2007-11-16 07:34:46 · 6 answers · asked by elohimself 4 in Mathematics

2007-11-16 07:34:00 · 9 answers · asked by Candace O 1 in Geography

I live in Tampa Florida. At our house, there is a cardinal who constantly flies into the window and pecks at it. Recently, it has gone to a different window on the other side of the house and exhibits the same behavior. It has been doing this for weeks. Can anyone explain this behavior?

2007-11-16 07:33:42 · 2 answers · asked by frisbinator 2 in Zoology

trying to see how much feed my steer eats in pounds. he is eating 18 quarts a day

2007-11-16 07:27:15 · 13 answers · asked by arizona 1 in Agriculture

Please can you help me with these equation things?
A- copper
B- iron
C- sodium
D- water

(a) copper oxide + sulfuric acid to copper sulfate + ( either A, B , C or D)
(b) copper sulfate + iron to (............) + iron sulfate
(c) iron oxide + carbon to ( .............) + carbon dioxide
(d) titanium chloride + (...................) to titanium + sodium chloride

THANKS, and if you could, please can you explin how these are done? I have forgotten s i haven't done them for a year and got very confused!:)

2007-11-16 07:23:26 · 2 answers · asked by Anonymous in Chemistry

2007-11-16 07:19:05 · 4 answers · asked by Jack X 2 in Biology

In the reaction:
PCl3 + Cl2 = PCl5
the bond energy for Cl-Cl is 243 kj/mol and for P-Cl it is 331 kj/mol

I know that bond energy for a reaction = sum of energy bonds broken - sum of energy of bonds formed

so how exactly would i find the bond energy?

2007-11-16 07:16:40 · 4 answers · asked by starz8 2 in Chemistry

2007-11-16 07:12:32 · 15 answers · asked by Anonymous in Zoology

Why did humans and hominids lose their fur?

2007-11-16 07:10:43 · 8 answers · asked by Jack X 2 in Biology