Science & Mathematics - 1 February 2007

Discuss experiments that lead scientists to understand that DNA is the genetic material. Include the experiments of Hershey and Chase which used viruses of bacteria to demonstrate that DNA, not proteins carry genetic information.

2007-02-01 14:52:32 · 9 answers · asked by john 2 in Biology

Can someone give me a hand with question 2(a) here: http://conley.math.ualberta.ca/joso/courses/math225/HW3.pdf

2007-02-01 14:51:50 · 3 answers · asked by jsprplc2006 4 in Mathematics

Why?

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2007-02-01 14:49:48 · 3 answers · asked by soulgirl76 4 in Zoology

2007-02-01 14:49:06 · 3 answers · asked by Anonymous in Physics

Anybody think we already have it secretly?

2007-02-01 14:49:02 · 5 answers · asked by thepaladin38 5 in Physics

Anybody think we already have it secretly?

2007-02-01 14:48:41 · 12 answers · asked by thepaladin38 5 in Astronomy & Space

Okay, so when you are trying to determine if a prediction is an example of interpolation or extrapolation, does the prediction have to be given specifically in the data?

For example, let's say your data included: 2,4,8,10
and your prediction is 9. 9 is not one of the numbers listed, but it's in the range. so is it interpolation or extrapolation?

2007-02-01 14:46:42 · 2 answers · asked by strawberry 7 2 in Mathematics

solve the equation x^2+26x+168

my answer is {12,14} am i right? thankssss

2007-02-01 14:46:21 · 3 answers · asked by Anonymous in Mathematics

Find all of the zeros of the following function.

p(x)=6x^4+22x^3+11x^2-38x-40


I'm having all sorts of problems figuring this one out. Can someone walk me through it step-by-step? Thanks.

2007-02-01 14:44:48 · 5 answers · asked by Anonymous in Mathematics

i am doing a research paper with my son and the only thing i can find are pictures and magazines to buy ..i need more about them can any one help

2007-02-01 14:44:24 · 8 answers · asked by karen_hayes31 2 in Botany

2007-02-01 14:43:40 · 4 answers · asked by yhanique2013 1 in Earth Sciences & Geology

What is the density of the nucleus in grams per centimeter cubed ? Assume the nucleus is a sphere with a volume equal to 4/3 P r 3

Enter a numeric answer only, no units. Use at least the correct number of significant figures.

2007-02-01 14:42:57 · 2 answers · asked by Anonymous in Mathematics

2007-02-01 14:42:16 · 13 answers · asked by Prostidude 2 in Astronomy & Space

this is the question:
"Suppose you are measuring the pressure inside a sealed cabinet using an open ended manometer, The atmospheric pressure is 762.4 mm Hg. If the mercury level on the side open to the atmosphere is 3.6 mm higher than on the side attached to the cabinet, what is the pressure inside the cabinet in units of kPa?"

Could you tell me how to work out this problem

2007-02-01 14:40:42 · 1 answers · asked by a.h. 2 in Chemistry

i need help,can you explain how to do this problem its for physical science class. middle

2007-02-01 14:40:26 · 5 answers · asked by z 2 in Chemistry

I'll give you a hint. Scientific questions kept him from getting a good night's rest.

2007-02-01 14:39:47 · 3 answers · asked by kriend 7 in Chemistry

Is it a skipped gene or something else??

2007-02-01 14:39:27 · 15 answers · asked by Direktor 5 in Biology

2007-02-01 14:39:18 · 1 answers · asked by hellomynamedoesntstartwithab 1 in Chemistry

where it says pie symbol its actually a pie symbol that is supposed to be there.

2007-02-01 14:39:03 · 7 answers · asked by jorie715 2 in Mathematics

Mg-24 23.985 amu 78.99 percent

Mg-25 24.986 amu 10.00 percent

Mg-26 25.983 amu 11.01 percent

Using this information, calculate the atomic weight of Mg out to four significant figures.

2007-02-01 14:38:35 · 2 answers · asked by Anonymous in Chemistry

It's going to be a bonus on my Biology I test tomorrow and, hey, we could all use some bonus points, right?

2007-02-01 14:37:40 · 7 answers · asked by Anonymous in Zoology

2007-02-01 14:37:25 · 1 answers · asked by Anonymous in Chemistry

2007-02-01 14:36:47 · 1 answers · asked by Anonymous in Chemistry

keep answer simple please

2007-02-01 14:36:45 · 7 answers · asked by Volleyball_Playa_06 1 in Biology

Kb=1.3X10^-3

2007-02-01 14:35:55 · 3 answers · asked by Anonymous in Chemistry

I need a website for a picture of an atom of sulfur. Any websites for that also?

2007-02-01 14:35:06 · 1 answers · asked by Nikki 3 in Chemistry

2007-02-01 14:34:14 · 6 answers · asked by Nikki 3 in Chemistry

It was sitting in a cabinet under the sink and not used as often as I previously had. The kids are grown and gone. The area under the sink is clean and dry. I owned the pan about 25-30 years. The pan now has pin head sized holes all on the sides and bottom and is useless. It is not coated with a non stick surface.

2007-02-01 14:33:53 · 2 answers · asked by kriend 7 in Chemistry

2007-02-01 14:33:42 · 2 answers · asked by Nikki 3 in Chemistry

if i was to go on a mission in my life of figuring out how to master gravity. where would i start. I know the quantum field -tell me something i dont know-we need to work as a"team" and figure it out for human kind. it will revoultionize our race. E.T.s figured it out so its possible. LEts open our eyes and accept there is more than what meets the eyes. If anybody is in the same boat with this thing as i am please lets work together not for greed or power but for humanity( im starting to cry) . I know this seems kinds crazy but i dont like to beat around the bush. If u know what gravity can do then i dont need to say any more. THANKS FOR YOUR PRECIOUS TIME

2007-02-01 14:32:23 · 12 answers · asked by Buck BUCK 2 in Astronomy & Space