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Can somebody tell me what is meant by the "One gene, one polypeptide" hypothesis? Also, does anyone know the evidence gathered by Watson and Crick that pointed to the complementarily of the nucleotide base adenine, guanine, cytosine and thymine?

Our teacher gave us an assignment. I guess it's not hard. But I just think of anything to write. Discuss the impact of the quality of collabration and communication on scitific research. Is it important to communicate with other scientists. What if scientists do not work together? Why do...

Do we fill the burette with a solution of unknown concentration or known concentration? Some text books say this and some say the opposite. I'm so confused.

thank you for your help

Q1. When 25ml of a solution at 23.2 degrees celcius containing 5.00*10-3 mol sodium hydroxide was mixed with 50ml of a solution also at 23.2 degrees celcius that contained 6.00*10-3 mol hydrochloric acid in a light plastic beaker, the final temperature of the mixture was 24.1 degrees celcius...

We used red cabbage and an unknown type of flower. If u can't find 3, just use any of the flowers with brightly coloured petals you can find in the school. Use mortar and pestal to grind the flower petals into a fine paste.( you can add some methanol and sand to make it easier for grinding)...

Hey, what tool or software do u guys use to type chemical symbols and equations?

I thought it's called the FBI rule because it uses a weird hand gesture, even now I still think it is....hehe But isn't it works the same as the right hand palm rule? So which rule came out first? The right hand palm rule or the FBI rule?

What's the FBI rule?

I agree I also think the direction is anticlockwise.

thanks lol

Why is it needed to be place a piece of metal between the magnets? Does that make any differnce to the magnetic field?

Thanks Isn't ppm=particle per million? How is it equal to mg/L?

1. NaOH(aq) + Cl2O(g) ----> H2O(l) + What would be the other product(s)? 2. 1.00L of air at 25 degrees celsius and standard atmosperic pressure contains 0.041 moles of gas. If the concentrations of carbon dioxide and sulfur dioxide in this air are 360ppm and 0.02ppm respectively...

Thanks a lot

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I just want to confirm something. When in neutal solutions: Is limtus (in soultion) purple ? Is Bromothymol blue green? I know their colours in acids and bases, but not sure of their colours in neutral solutions. :wave:

Thank you for your help

I agree with that. The laws of special relativity only applies to inertial frame of reference. The frame of the twin on the spaceship has not remained inertial, as the spaceship has accelerated, decelerated, turned around and then repeated it accelerations. So, there is no paradox because...

Hope that will help I have done a first-hand investigation(a prac, wasn't an exam) on dissection of a kidney. The purpose was to examine the external and internal structure of a kidney and to relate structure to function.