Science & Mathematics - 18 December 2007

why do we do this?

2007-12-18 13:43:30 · 2 answers · asked by S i r i 1 in Medicine

... and life as a whole??

the question was too long. lol.
is it because the evolution of prokaryotes and eukaryotes are somewhat similar?

help me. i need a full answer

2007-12-18 13:43:26 · 3 answers · asked by ica03 2 in Biology

2007-12-18 13:43:11 · 2 answers · asked by justin k 1 in Mathematics

HELP!!!!!!! I NEED AN ANSWER FOR THIS EQUATION PLEEZ!!!!!!! ITS DUE TOMORROW DEC 19TH 2007!!!!!!! HELP!!!!!!!

2007-12-18 13:42:40 · 8 answers · asked by nini a 1 in Mathematics

Factor the expression 11(x + y) - 19 t(x + y)

Factor the polynomial 7 a ^8 b^ 9 c^ 7 - 21 a^ 9 b^ 7 c ^8

Factor 17 x ^2 + 17 x y + 19 x + 19 y by grouping

2007-12-18 13:41:06 · 4 answers · asked by Abena 2 in Mathematics

last one i promise.......
Circle the letter of the first step in protein synthesis.
a. Transfer RNA carries amino acids to the ribosomes.
b. The ribosomes releases the completed protein chain.
c. Messenger RNA enters the cytoplasm and attaches to a ribosome.
d. DNA "unzips" to direct the production of a strand of a messenger RNA.

thanks and pleaseee help. thanks again. =]

2007-12-18 13:40:51 · 2 answers · asked by Anonymous in Biology

2007-12-18 13:39:08 · 12 answers · asked by HannahSpontana 2 in Astronomy & Space

how do you calculate the rate of photosynthesis?

2007-12-18 13:38:41 · 1 answers · asked by wondering!! 1 in Biology

If you have any links to them that can help too...Thank you in advance :-D

2007-12-18 13:38:07 · 1 answers · asked by loone 2 in Chemistry

Thanks

2007-12-18 13:36:33 · 4 answers · asked by Anonymous in Mathematics

2007-12-18 13:36:06 · 6 answers · asked by frirv 2 in Astronomy & Space

if a hole were to be dug, in California, straight though to the other side of the earth....were would you end up?

2007-12-18 13:35:28 · 10 answers · asked by AimSAR 2 in Geography

2007-12-18 13:33:03 · 6 answers · asked by S i r i 1 in Medicine

I live in nyc, and love astronomy - does anyone know how i could get past the roof door (emergency exit) without the nasty alarm sounding??

2007-12-18 13:32:30 · 4 answers · asked by Anonymous in Astronomy & Space

It's a method of factoring but I forget how to put it into my calculator... Any suggestions are appreciated!

2007-12-18 13:31:07 · 1 answers · asked by Anonymous in Mathematics

I've been really struggling with this question.
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Let {[x_j,y_j]}_(j>=0) be a sequence of closed, bounded intervals in R, with x_j<=y_j for all j>=1.

Suppose that the intervals which make up this sequence are disjoint, i.e. [x_j,y_j]∩[x_k,y_k] = Ø for j≠k.

Is it possible that R=U_(k>=1) [x_k,y_k]?

Hint: What sort of subset in R must be then be formed by the endpoints U_(k>=1) {x_k,y_k}
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Thank you so much!

2007-12-18 13:30:26 · 2 answers · asked by Theodore E 1 in Mathematics

I need it to study for tommorow's test.

My teacher never teach us ALL of the 206 bones.

Thanks if you help!

* remember we have have 2 of most bones like 2 ulnas,femurs,etc.

2007-12-18 13:29:53 · 6 answers · asked by Animal Luverr™ 4 in Biology

Why aren't the images of stars in color (blue or orange)? Is it because of the telescope? Or are most telescopes unable to show color images?

2007-12-18 13:27:30 · 5 answers · asked by How To Save A Life 2 in Astronomy & Space

does anyone know what way NASA launches their space shuttles north, east, or west? i know it is not south. i think it is west but im not sure so please help!

2007-12-18 13:27:06 · 3 answers · asked by chelsea 4 in Astronomy & Space

2007-12-18 13:23:22 · 5 answers · asked by Anonymous in Biology

2007-12-18 13:23:13 · 4 answers · asked by Anonymous in Zoology

im doin this for an ap bio final review

2007-12-18 13:21:05 · 1 answers · asked by Anonymous in Biology

plz need help

2007-12-18 13:20:56 · 7 answers · asked by THE SNOW QUEEN OF THE WEST 1 in Biology

1) describe the events that take place during each phase of interphase .

2) list four type of events that take place in a eukaryotic organism , such as a deer , that riquire cell division .


THANKS

2007-12-18 13:19:59 · 2 answers · asked by sweethoney9079 4 in Biology

This is an optimization problem in calculus.

An offshore oil well is 2 kilometers off the coast. The refinery is 4 kilometers down the coast. If laying pipe in the ocean is twice as expensive as on land, what path should the pipe follow in order to minimize the cost?

What are the steps to arrive at this answer and what is the final answer? Any and all help would be greatly appreciated!

2007-12-18 13:19:33 · 2 answers · asked by Anonymous in Mathematics

i'm having trouble with this problem:
you are given a white crystalline powder that melts at 450 degrees celsius. you are told that the compound may either be NH4(subscript 4)Br or NO2(subscript2). what is the identity of the compound?

another problem i'm having is figuring out what a central atom is cuz i forgot(oops :) ) can you tell me wat a central atom of C2H4

thankx bunches :)

2007-12-18 13:19:12 · 2 answers · asked by Chocolate_High 2 in Chemistry

I have to create a vehicle that is propelled by Newton's 3rd Law. "For every action, there is an equal and opposite reaction." Basically, something that makes the car go by being pushed against the wall. I've been thinking like a spring or something, but i think everyone's going to do that. Any ideas?

2007-12-18 13:17:31 · 6 answers · asked by Anonymous in Physics

If it is...are there any "believing" scientists on here?(as in believing in the paranormal, but also a scientist) ie...Are all scientists skeptics of the paranormal??

2007-12-18 13:17:19 · 17 answers · asked by Deenie 6 in Paranormal Phenomena

A 65.0 kg diver steps off a diving board and drops straight down into the water. The net force when in the water is an upward 1250 N. If the diver comes to rest 4.0 m below the water's surface, what is the total distance between the diving board and the diver's stopping point underwater?

2007-12-18 13:17:03 · 1 answers · asked by Anonymous in Physics

2007-12-18 13:16:48 · 2 answers · asked by Derrick H 1 in Biology