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Use of bilirubin measurements in clinical biochemistry?
Use of bilirubin measurements in clinical biochemistry?
Use of bilirubin measurements in clinical biochemistry?
Biochemistry   !JRon@n   205   ogre   5 years ago
Precalc help? graphing inequality?
Precalc help? graphing inequality?
x^2-1 is less than or equal to the absolute value of x + 1. so it basically looks like this:

x^2-1 (less than or equal to) lx+1l

i hate precalculus. i'm a sophomore for gods sake.
Mathematics   !JRon@n   507   3   padre   5 years ago
Why do so many physicists say that the linear algebra is the most important branch of math to physics?
Why do so many physicists say that the linear algebra is the most important branch of math to physics?
In my calculus class, I can see applications in all most all of the concepts we learn to physics. In linear algebra, I have yet to see even one application to physics aside from simple vector geometry, which most people know without ever taking physics. Please tell me, how are vector spaces, bases, dimensions, rank, determinants, eigenvalues/eigenvectors, and linear transformations
Mathematics   !JRon@n   767   lfishman1   5 years ago
How do i balance this nuclear equation?
How do i balance this nuclear equation?
249            .....257
Cf + X .... Rf  +        4  1 n
98              ......104   ........0

(a 4 coefficient is in front of the neutron particle meaning 4 neutrons)
what do I place as X in order to balance the equation?
I thought I had to add 3 alpha particles but apparently that's not it. Please help.
Chemistry   !JRon@n   202   2   friskie   5 years ago
Is light considered a catalyst in the initiation step of radical formation?
Is light considered a catalyst in the initiation step of radical formation?
Also is it the step with the highest activation energy required?
Chemistry   !JRon@n   235   TPDar   5 years ago
How many significant digits are there in the number 1050.?
How many significant digits are there in the number 1050.?
How many significant digits are there in the number 1050.? Express your answer as a numeral.
Other   !JRon@n   265   SmartNurse21   5 years ago
Can pGEM-T Easy Vector JM109 cells take up multiple copies of the Plasmid?
Can pGEM-T Easy Vector JM109 cells take up multiple copies of the Plasmid?
I am using JM109 cells and the pGEM-T easy vector system II to clone a mixed microbial community for sequencing and I need to know whether a sinle copy or multiple copies can be taken up by each competent cell because this will impact on my ability to sequence from purified plasmid from 1 white cell.
Upper-Year Courses   !JRon@n   676   5 years ago
I need some small plants that grow really really fast. Please help!!!?
I need some small plants that grow really really fast. Please help!!!?
I have to do a science project (sigh). So I need to know a list of small plants that grow amazingly fast. Thank you!
Zoology and Botany   !JRon@n   184   flautist1302   5 years ago
What percentage of crops in the US are genetically modified?
What percentage of crops in the US are genetically modified?
I need to know what % of food grown in the United States isproduced by GMOs or genetically modified organisms. I also need a source. Thanks in advance

**This includes livestock!
Zoology and Botany   !JRon@n   226   cheap.tb.soln   5 years ago
What is the difference between an egg, a zygote, an embryo, and a fetus?
What is the difference between an egg, a zygote, an embryo, and a fetus?
What is the difference between an egg, a zygote, an embryo, and a fetus?
Genetics and Developmental Biology   irina   18274   2   $abood$   6 years ago
rates question involving system of linear equations.. please break it down for me?
rates question involving system of linear equations.. please break it down for me?
A cyclist travels 60mi in 5 hours going against the wind. She travels 100 with the wind in the same amount of time. What is the rate of the cyclist in still air and what is the rate of the wind?
Mathematics   irina   353   4   Rkamu   6 years ago
What is the first step in solving the equation 88 = 13 + 5x?
What is the first step in solving the equation 88 = 13 + 5x?
1. Subtract 13 from both sides of the equation.
2.Divide both sides of the equation by 5.
3. Add 13 to both sides of the equation.
4. Multiply both sides of the equation by 5.
Mathematics   irina   765   4   c.c.morgan   6 years ago
How would you find the solution to this logarithm?
How would you find the solution to this logarithm?
What is the solution (x) in this equation, correct to three decimal places:

3^x = 7

I know what the answer is, but only because it was a multiple choice question. If you could explain how you work it out, that'd be great.
Mathematics   irina   845   4   buggyg69   6 years ago
Upon balancing the equation below, how many moles of sulfuric acid are needed to react completely with 6.4 mol?
Upon balancing the equation below, how many moles of sulfuric acid are needed to react completely with 6.4 mol?
Upon balancing the equation below, how many moles of sulfuric acid are needed to react completely with 6.4 moles of lithium hydroxide?

LiOH + H2SO4  Li2SO4 + H2O

 12.8 mol H2SO4

 6.4 mol H2SO4

 3.2 mol H2SO4

 2.1 mol H2SO4
Chemistry   irina   1969   zzz1090   6 years ago
Math help (algebra 1)?
Math help (algebra 1)?
The units digit of a two-digit number is 1 more than twice the tens digit. If the digits are reversed, the new number is 36 more than the original number. Find the number.      Please help!
Mathematics   irina   507   3   rjt6250   6 years ago
What do dopamine, serotonin, oxytocin, and vasopressin have in common?
What do dopamine, serotonin, oxytocin, and vasopressin have in common?
What do dopamine, serotonin, oxytocin, and vasopressin have in common?
High School Level Science   irina   594   2   julie.t   6 years ago
would BamHI restriction enzyme digest of a different bacteriophage look the same as the BamHI digest of lambda?
would BamHI restriction enzyme digest of a different bacteriophage look the same as the BamHI digest of lambda?
why or why not
enzyme restriction lab
ap bio
Cell Biology   irina   2635   zzwChris   6 years ago
How would you isolate a bacteriophage for a species of Bacillus?
How would you isolate a bacteriophage for a species of Bacillus?
How would you isolate a bacteriophage for a species of Bacillus?
Cell Biology   irina   2941   firestrike   6 years ago
what is the difference between the T5 and T7 bacteriophage promoters?
what is the difference between the T5 and T7 bacteriophage promoters?
what is the difference between the T5 and T7 bacteriophage promoters?
Cell Biology   irina   597   firestrike   6 years ago
Use the Pythagorean Theorem to Fine the Missing Side?
Use the Pythagorean Theorem to Fine the Missing Side?
if you are solving for B, and C= 14, and A= 5

using the Pythagorean Theorem, ( a^2 + b^2 = c^2 )

how can you do this? please explain!
Mathematics   irina   668   9   rjlene   6 years ago
What blood type am I? Father is AB+, Mother is O+.?
What blood type am I? Father is AB+, Mother is O+.?
Mt father is blood type AB+ and my mother's blood type is O+. I know that in this situation I'm either A or B. But I was wondering 2 things.
1. If I'm A for example, am I positive since both of my parents are or is there still a chance for me to be negative?
2. Is there more of a chance to have A than B? Or visa versa?
Anatomy and Physiology   irina   586   juliem   6 years ago
How to solve an equation using the Gaussian elimination method.?
How to solve an equation using the Gaussian elimination method.?
3x + 2y -z = 1
2x + 3y -z = 1
 x + 3y -z = 3
Mathematics   irina   410   rkdgh2002   6 years ago
How to solve this Algebra Equation?
How to solve this Algebra Equation?
At a theater, 13 junior tickets and 3 adult tickets cost $113, while 8 junior tickets and 9 adult tickets cost $137.50? How much does each adult ticket cost?

Can you please help me solve this by showing the steps you take to solve it. Thank you!
Mathematics   irina   339   2   tommyboiazn23   6 years ago
Genetics Biology Multiple Choice Question?
Genetics Biology Multiple Choice Question?
A gene in cattle controls whether horns develop or not. When cattle without horns are mated together, none of the offspring ever has horns. A male with horns is mated with females without horns. If half of the offspring have horns and half do not, what is the conclusion?

a) the male is homozygous dominant
b) the make is homozygous recessive
c) the male is heterozygous
d) only males
General Biology   irina   2365   irislawls   6 years ago
How to balance acidic reaction using the half method?
How to balance acidic reaction using the half method?
KMnO4 + H2SO4 + NaHSO3 -> MnSO4
I get stuck when balancing the overall charge using electrons on the 2 half reactions. If someone could please explain the steps needed to balance using the half reaction method and explain to me how we find the overall charge on either side of the arrow when balancing with electrons, I'd really appreciate it. Thanks
I don't get
Chemistry   irina   412   fivepointoh   6 years ago
what is the best form of coenzyme Q10 to take?
what is the best form of coenzyme Q10 to take?
I am looking online for coenzyme Q10. I visit iherb.com often. On that site there are so many coenzyme Q10. I do not know what to  buy or what to look for, in terms of amount. What is a good price for it? I do not want to pay too much or not enough coenzyme Q10 or too much in my system.
Biochemistry   irina   398   2   tommynkell   6 years ago
Discuss the Krebs cycle and oxidative phosphorylation. Address ATP & coenzyme production.?
Discuss the Krebs cycle and oxidative phosphorylation. Address ATP & coenzyme production.?
* Mention where these biosynthetic pathways occur and chemiosmotic theory
Biochemistry   irina   2255   4   tommyq   6 years ago
Mixed up between coenzyme, cofactor and prosthetic group!!?
Mixed up between coenzyme, cofactor and prosthetic group!!?
whats the difference? wikipidea is confusing me
also iif theres chloride ions present on an enzyme would it be a coenzyme?
Biochemistry   irina   1906   ilkat   6 years ago
Why is there an option to search for medical questions but not nursing?
Why is there an option to search for medical questions but not nursing?
Nurses, both bedside RN's and Advanced Practice nurses (NP's CNS's)  are often overlooked when discussing health care topics. Why is this and what can we do to change this on yahoo?  I think there are plenty of nurses out there who would like a forum of questions of their own, and plenty of people who want to hear what they have to say!  Thoughts?

PS I posted this in medicine becau
Nursing and Clinical   irina   531   6   smkt025   6 years ago
I have a question for a nurse or doctor?
I have a question for a nurse or doctor?
I have searched on the internet and not found much information on this. But I want to know about how much job security do doctors have. I mean because of the rescession can hospitals or clinics lay off doctors? (because people don't have insurance without jobs) How common is this?

Are there doctors who are unemployed and found jobs in other sectors. (like doing other lower paying j
Nursing and Clinical   irina   427   2   dave2011   6 years ago
In order for a buffer to have pH=pKa, how many moles of the base should be added?
In order for a buffer to have pH=pKa, how many moles of the base should be added?
The buffer solution is .40 M H2NNH2 and .80 M H2NNH3NO3.  The pH I calculated is is 8.14, the pka is 8.22 (kb given is 3.0 x 10^-6 ).

I got -.20 for my answer which seems bizarre.  The answer in the back of the book is .20 mols added of NaOH.

I used the Henderson-Hasselbalch equation as follows:

pH= pKa + log [base]/[acid]

plug pka=pH in:
8.22=8.22 + log (.40 -x)/ (.80 + x)
1=
Chemistry   irina   1370   _brooksd   6 years ago
At what pH value does the ratio of the basic form In- to the acidic form HIn of methyl orange indicator (pKa =?
At what pH value does the ratio of the basic form In- to the acidic form HIn of methyl orange indicator (pKa =?
At what pH value does the ratio of the basic form In- to the acidic form HIn of methyl orange indicator (pKa = 4.2) have the value 1.0 : 5.0?
Chemistry   irina   638   fishysoup   6 years ago
pH equal to its pKa chemistry question?
pH equal to its pKa chemistry question?
Consider a solution of a weak acid at a pH equal to its pKa.

By how much would the pH change, and in which direction, if we added to this solution enough base to neutralize 10% of the total acid?
Chemistry   irina   495   smkt025   6 years ago
Calculate pH from dissociation and pKa?
Calculate pH from dissociation and pKa?
I can't figure this out:

Calculate the pH at which the R-group of lysine is 33.3% dissociated. The pKa for this group is 10.5.

so...

pH = pKa + log [A-]/[HA]

i plug in 10.5 for pKa, but what do I put in for [A-]/[HA] ?

Thanks!
Chemistry   irina   262   2   smluke2000   6 years ago
Help me find the concentrations of A- and HA when given pH and pKa?!?!?!?
Help me find the concentrations of A- and HA when given pH and pKa?!?!?!?
At pH of 6 and pH of 9, what are the concentrations of A- and HA when the pKa is 8?  I know the formula, but the log function vexes me, and I can't figure out how to solve these on my TI-83...  PLEASE HELP!!!!
Face with Open Mouth)
Chemistry   irina   436   budi   6 years ago
How do I rank acidic compounds w/o pH or pKa values?
How do I rank acidic compounds w/o pH or pKa values?
I'm trying to rank this compounds from greatest to weakest acid based on the compound itself.
A) NH3
B) H2O
C) H2
D) HC (triple bond) CH
E) CH3OH
F) H3O+
Chemistry   irina   563   mikee   6 years ago
Math Question! "Find two consecutive integers such that the square of the smaller is 10 more than the larger."?
Math Question! "Find two consecutive integers such that the square of the smaller is 10 more than the larger."?
Please help! Can you also show me how you did the problem? Thanks!
Mathematics   irina   481   3   bio_man   6 years ago
What is the ideal ratio of air to fuel in the combustion of Isopropyl Alchohol?
What is the ideal ratio of air to fuel in the combustion of Isopropyl Alchohol?
A simple ratio (3:1) or fraction (3/1) are perfectly fine for all you considerate science/pyros out there Slight Smile
Mathematics   irina   322   buffnstuff   6 years ago
What is the primary site of reabsorption of a nephron?
What is the primary site of reabsorption of a nephron?
a. PCT (proximal convoluted tubule)
b. DCT (distal convoluted tubule)
c. loop of Henle
d. renal corpuscle
General Biology   irina   408   2   fistpumporgy   6 years ago
Whats the purpose of the loop of the henle?
Whats the purpose of the loop of the henle?
Different organisms have different sizes of it why is this so?
General Biology   irina   852   4   fishnchips   6 years ago
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