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Science & Mathematics - 12 September 2006

[Selected]: All categories Science & Mathematics

Agriculture · Alternative · Astronomy & Space · Biology · Botany · Chemistry · Earth Sciences & Geology · Engineering · Geography · Mathematics · Medicine · Other - Science · Physics · Weather · Zoology

The are general three answers. One is that the space will stop moving in the end. The second is that the space will become bigger and bigger. The third is that the space will become smaller and smaller. But what is the really end of the space?

2006-09-12 17:01:33 · 7 answers · asked by yy 1 in Astronomy & Space

2006-09-12 17:01:32 · 26 answers · asked by pushuda 1 in Geography

I want to know details about human total RNA and ribosomal RNA subunit. What is total RNA? During RNA extraction, what the product that we get?

2006-09-12 17:00:36 · 4 answers · asked by b@dRuL 1 in Medicine

Find two consecutive even intergers whose sum is 126?

Find three consecutive odd intergers whose sum is 177?

Find two consecutive even intergers whose sum is 217?

Find four consecutive odd integers whose sum is 8?

Find three consecutive even intergers whose sum is 396?

2006-09-12 16:58:15 · 5 answers · asked by Hiphopaction 2 in Mathematics

I really wanna know.

2006-09-12 16:57:56 · 9 answers · asked by Aioros 1 in Other - Science

2006-09-12 16:56:47 · 14 answers · asked by ? 2 in Mathematics

2006-09-12 16:55:39 · 11 answers · asked by Anonymous in Geography

will the child have a blue eye and another is yellow ?

2006-09-12 16:55:25 · 17 answers · asked by gaoqina0912 1 in Biology

Write a formula for a linear function f whose graph satisfies the conditions.

2006-09-12 16:55:20 · 5 answers · asked by jessica W 1 in Mathematics

2006-09-12 16:47:27 · 8 answers · asked by Catherine H 1 in Mathematics

If one were to get a large amount of blood transfused, due to an accident or something, would there be enough to change the majority of DNA in your blood? Enough even that police could incorrectly identify someone based on blood left behind at a scene of a crime?

2006-09-12 16:42:09 · 26 answers · asked by nslsuperstar 1 in Medicine

you want to build a shed in your backyard. you have blueprints which show that the shed is10 feet x 13 feet. you want to change the dimensions. the new area is modeld by the equation A = -xSquared + 3x + 130.
What value of x, if any, will give an area of 140 ftSquared? Is there any value of x for which the shed has an area of 124 ftSquared? If so, what value of x?

2006-09-12 16:41:03 · 5 answers · asked by sonovabeeech 1 in Mathematics

where can i find images of the hms beagle besides yahoo or google image search???????????i need this asap!!!!!!!

2006-09-12 16:36:59 · 2 answers · asked by dcjohnson5 2 in Other - Science

I want to do some study on the plankton and the phytoplankton. How powerful must the microscope has to be ?

Any one know how much they cost, cheap one ?

2006-09-12 16:35:44 · 6 answers · asked by Anonymous in Biology

where do flys go at night and mosquitos during the day.

2006-09-12 16:35:15 · 11 answers · asked by seanbeever 1 in Biology

the yellow pages identity two different local electrical business. business a charges $50 for a service call, plus an additional $40 per hour of labor. business bcharges $30 for a service call, plus an additional $45 per hour of labor.

where x = hours of labor and y = total charge, write a system of equation you could solveto find the lengths of a service call for which both businesses charge the same amount. solve the system

2006-09-12 16:34:01 · 7 answers · asked by sonovabeeech 1 in Mathematics

2006-09-12 16:31:43 · 13 answers · asked by RaphaelDeLaGhetto 2 in Other - Science

I know that this question will result in alot of strange answers, but Isn't it interesting that, for example sound does not exist until it reaches our ear. (vibrations are not considered sound until they reach our ear)Or, color does not exist until it reaches our eye. Our senses determine what reallity.

2006-09-12 16:30:14 · 6 answers · asked by vande-man 3 in Other - Science

and what are practical uses for it?

2006-09-12 16:28:52 · 6 answers · asked by chris22luigi 2 in Chemistry

What season would you prefer it to be?

2006-09-12 16:28:47 · 56 answers · asked by thpethal_ed 3 in Weather

2006-09-12 16:28:02 · 6 answers · asked by jessica W 1 in Mathematics

Do any kinds of doctors get paid more than an anesthesiologist?

2006-09-12 16:27:19 · 7 answers · asked by alexmgram 2 in Medicine

2006-09-12 16:27:08 · 10 answers · asked by Dastardly 6 in Biology

I think that we are all One. The apparent physcial/emotion differences between us are only illusions. The body is just a vehicle to experince this reality, which has now been roven by quantam physchics...isnt real either. What do u think?

2006-09-12 16:26:39 · 4 answers · asked by Keith 2 in Physics

what does it mean by 'limits to growth'?

2006-09-12 16:23:27 · 4 answers · asked by haru 1 in Other - Science

For the last four years you have worked for a large drug manufacturing company as a drug development research scientist. Recently, you were appointed as lead scientist for one of the company’s research teams and asked to evaluate a group of soil Actinobacteria as a potential source of antibiotics against the pathogenic bacterium Streptococcus pneumoniae. This bacterium causes pneumonia in humans. The development team has already extracted two promising drugs (R16 and R22). In order to test the effectiveness of these two potential antibiotics, you call you team together and devise an experiment, using laboratory mice. In preparation for the experiment your technicians have just injected the mice (200 total individuals – divided equally between the two treatment drugs) with the Streptococcus pneumoniae bacterium. Two weeks into the experiment, as you evaluate the preliminary data, you notice that 85% of the infected mice treated with 20 mg, of R22, 3 times a day, for 10 days have recovered fully from the bacterial infection; however, 10% of the mice treated with R22 have developed a chronic liver condition. The same treatment regime using R16 yields similar results (83% recovery but 12% of the mice have developed a mild, treatable rash on their forelimbs).
1.Which of the following would be the independent variable in your experiment?
a.the total number of mice used in the experiment
b.the concentration of Streptococcus pneumoniae cells injected in the experimental group of mice.
c.the two drugs (R16 and R22).
d.the amount of water available to each mouse during a 24 hour period
e.none of the above are correct

2.Of the following possible dependent variables which one most specifically applies to your experiment?
a.the temperature in the “mouse house” where you are conducting your experiment.
b.changes in blood pH between the experimental and control groups.
c.percent survival of mice in the experimental and control groups.
d.differences in urination frequency between the experimental and control groups.
e.none of the above are correct

3.Which of the following factors must be held constant between the control and experimental groups in your experiment?
a.the concentration of Streptococcus pneumoniae injected into the mice
b.the core body temperature of the mice
c.the amount of R16 and R22 administered
d.the urination frequency of the mice

Which of the following would be a valid hypothesis for your experiment?
a.Mice commonly die when infected with Streptococcus pneumoniae.
b.Actinobacteria are common soil microorganisms.
c.The drugs R16 and R22 are not effective antibiotics against Streptococcus pneumoniae.
d.Lung tissue in mice is not susceptible to Streptococcus pneumoniae.

5.Based on the preliminary data from your experiment with mice, which drug do you think holds the greatest promise for treating pneumonia in humans?
a.R16
b.R22
c.A combination of R16 and R22
d.Neither

2006-09-12 16:19:59 · 7 answers · asked by Anonymous in Zoology

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