Tuesday, January 15, 2013

DNA structure daily questions


Tuesday January 15th
DNA is made up of nucleotides.  What are the three parts that make up a nucleotide?
A sugar (deoxyribose) a phosphate group and one of four nitrogen bases.

Of these, which two make up the backbone? The sugar and the phosphate groups

Which make up the “code” that writes our instructions? The nitrogen bases

There are 4 different “codes” in DNA, what are they and how do they pair up? Adenine, Guanine, Thymine and Cytosine
Adenine and Tymine (A and T) pair up
Guanine and Cytosine (G and C) pair up

When during the cell cycle does DNA replicate?
During the S-Phase (Synthesis phase)

After this we watched the first part of the following crash course (up until he starts talking about RNA) followed by a a worksheet that summarizes what we have learned so far about chromosomes, genes, DNA and the cell cycle.  This is due tomorrow!!

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