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Questions83
  • Determining the DNA sequence that codes for the amino acids?

    Given the following sequence of amino acids, use the genetic code table to determine the DNA sequence that codes for the amino acids.

    For the amino acid sequence: tyrosine - proline - aspartic acid - isoleucine - cysteine

    The choices are as follows:

    A. AUGGGUCUAUAUACG

    B. ATGGGTCTATATACG

    C. GCAAACTCGCGCGTA

    D. ATAGGGCTTTAAACA

    When looking at a mRNA codon chart, how do I go about finding these codons?

    2 AnswersBiology9 years ago
  • What's the refrigerator used to grow bacteria called?

    If it doesn't have a proper name, what would be the scientific name for growing bacteria in this manner? Thanks in advance.

    1 AnswerBiology9 years ago
  • Stoichiometry question yet again?

    If you have two moles of potassium phosphate, what is the mass of potassium nitrate that is produced? K3PO4 + Al(NO3)3 --> 3KNO3 + AlPO4

    Who's got an answer for this question?

    1 AnswerChemistry10 years ago
  • Empirical and molecular formula problem?

    A compound containing Carbon and Hydrogen has a percentage of 85.7% of Carbon. What is the empirical formula? What is the molecular weight 42.0 g/mole and what is the molecular formula?

    3 AnswersChemistry10 years ago
  • Two more Stoichiometry questions...help?

    Question 1: A student reacted 2.43g of Mg metal with excess HCl. What is the volume of H2 gas formed at STP as given in the following reaction, Mg + HCl --> MgCl2 + H2.

    Question 2: What is the volume of the CO2 gas produced at STP if a student uses 0.100 mole of Calcium Carbonate in the following reaction, CaCO3 --> CaO + CO2.

    Thanks in advance.

    2 AnswersChemistry10 years ago
  • Another Stoichiometry question?

    What is the volume of the gas occupied by H2 gas if a student uses 1.0 moles of Na and 2.0 moles H2O using the reaction, Na + H2O --> NaOH + H2

    I think I know the answer but I may be wrong. Who knows the answer to this?

    2 AnswersChemistry10 years ago
  • I need help with this question?

    A sample of Nitrogen gas has a volume of 50.5 mL at -80C and 1250 torr. The volume of the gas at STP is?

    Based on the question, I'm assuming this is a Combined Gas Law problem.

    I have an answer but i'm not sure if it's correct. Thanks in advance.

    1 AnswerChemistry10 years ago
  • Combined gas law? Help?

    A sample of Nitrogen gas has a volume of 50.5 mL at -80C and 1250 torr. The volume of the gas at STP is?

    Based on the question, I'm assuming this is a Combined Gas Law problem.

    Can any of you smart folks help me out with the answer? I have one but i'm not sure if it's correct. Thanks in advance.

    3 AnswersChemistry10 years ago
  • Stoichiometry question..Part 2?

    In the following reaction if a student uses 1.00 mole of Nitrogen and 1.00 mole of Chlorine gas which is the limiting reaction?

    N2 + Cl2 --> NCl3

    If the limiting reaction is Cl2, how many grams of the product NCl3 is obtained?

    2 AnswersChemistry10 years ago
  • Stoichiometry question?

    Can anyone help me with this problem? Here goes:

    In the following reaction if a student uses 1.00 mole of Nitrogen and 1.00 mole of Chlorine gas which is the limiting reaction?

    N2 + Cl2 --> NCl3

    2 AnswersChemistry10 years ago
  • Who likes the way they sound?

    on voicemails or other recordings?

    8 AnswersPolls & Surveys1 decade ago
  • mAh lithium-ion battery?

    Is a higher number better or worse. For example, which one of these has a better battery life, a 1500mAh lithium-ion battery or a 1350mAh lithium-ion battery?

    3 AnswersEngineering1 decade ago
  • A strange bus dream. What does it all mean?

    Lately I've been having very clear and prophetic dreams. In my latest dream, I'm coming from work, getting out of the subway and transferring to an awaiting bus. I got on thinking that this was my bus home. However, as I'm riding it I realize I'm going the wrong direction. I never get off because I figured there's no point because I have no idea where I'm going. I tell the bus driver and he gives me a transfer that has the numbers 203 on it which I guess is the number of the bus and tells me when he finishes his route, show it to the next bus driver who will get on after him and he will take me the correct way. Which is what happens. The bus itself is filled with high school kids coming from school. The seats of the bus when I was going the wrong direction were regular bus seats but the seats going back home were made of classroom desks and chairs.

    What does all of this mean?

    3 AnswersDream Interpretation1 decade ago
  • Dynamic Contrast Ratio?

    Ok, I know the higher the better but really, how important is dynamic contrast ratio? My LG LCD has 50, 000:1 and it's very bright and sharp but how much does that have to do with the adjustments that I made in the settings or dynamic contrast ratio? If I had an LCD that was say, 10,000:1, would there be a big difference in the brightness or sharpness of the picture?

    2 AnswersTVs1 decade ago
  • Noise Reduction on and HD LCD TV?

    My HD LCD TV has a noise reduction setting, high, medium, low or off. Is this feature necessary for good viewing on an LCD?

    Who has theirs on and does it make a difference?

    I have an LG 37LG60.

    3 AnswersTVs1 decade ago
  • What are you doing with your hand?

    Right handed people, what is your left hand doing?

    Left handed people, what is your right hand doing?

    5 AnswersPolls & Surveys1 decade ago