I need help! Science lab questions...

1.It is a right handed double helix. It is made up of nucleotides that are bound to eachother by phosphodiester bonds. It consists of a phosphorous group, and deoxyribose sugar, and a base (Adenine, Guanine, Cytosine, Thymine)

Adenine and Guanine are Purines, and the other two are Pyrimidines.

The bases are “connected” to each other by hygrogen bonding. A::T G:::C each colon represents the number of H bonds. 2.Cell division consists of two phases, nuclear division followed by cytokinesis. Nuclear division divides the genetic material in the nucleus, while cytokinesis divides the cytoplasm. There are two kinds of nuclear division—mitosis and meiosis. Mitosis divides the nucleus so that both daughter cells are genetically identical. In contrast, meiosis is a reduction division, producing daughter cells that contain half the genetic information of the parent cell. 3.transcription is the process which your DNA serves as a template to produce single stranded mRNA. An enzyme (RNA polymerase) slides down the DNA template (after the opening, and in part assisting, of the DNA double helix) and catalyzes the the polymerization of this RNA molecule. The code of the resulting mRNA is a direct result of the sequence of DNA because As and Ts (U’s) match up as do Gs and Cs.

Translation is the process where your mRNA floats out the nucleus, slides into the ribosomal complex in the cytoplasm, and “translates” the nucleotide code within mRNA to the amino acid code. Every 3 nucleotides in this mRNA “code” for a specific amino acid, at which point a peptide bond is joined between amino acids to produce a polypeptide or protein. Translation is therefore the process by which mRNA codes for protein.

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