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Kole G.
Tutor/Biophysics student researching iron uptake mechanisms in bacteria.
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Spanish
TutorMe
Question:

What is the best translation for the phrase, we ran by the red house.

Kole G.
Answer:

(nosotros) corremos a la casa roja.

Chemistry
TutorMe
Question:

What gives a compound or molecule polarity?

Kole G.
Answer:

Polarity occurs when a molecule or compound has a partial negative charge and a partial positive charge. When an element such as hydrogen (positive) bonds covalently to another element such as nitrogen (negative), because of the size of nitrogen, the compound will form poles with opposing charges. The N----H compound will have a partially negative pole (nitrogen) and a partially positive pole (hydrogen).

Biology
TutorMe
Question:

What is the differentiating factor between RNA and DNA? (Hint...it's not Uracil)

Kole G.
Answer:

Because Uracil and Thymine, on a molecular level are basically same molecule, the differentiating factor has to be found elsewhere. The other difference between the two compounds are the sugar on the backbone. The DNA has a deoxyribose sugar and the RNA has a ribose sugar. The deoxyribose is missing an oxygen on the 2' carbon and ribose has an oxygen on the 2' carbon. This single oxygen is what enzymes such as polymerases use to differentiate the two compounds from each other.

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