6.1 DNA

Question 1

Describe the nucleotide

Answer 1

A molecule consisting of a nitrogen-containing base (adenine guanine thymine or cytosine in DNA adenine, guanine uracil or cytosine in RNA) a phosphate group and a sugar (deoxyribose in DNA ribose in RNA).

Question 2

What is the ribonucleic structure

Answer 2

It is made up of nucleotides, which are ribose sugars attached to nitrogenous bases and phosphate groups.

(adenine guanine uracil cytosine)

Question 3

What is mRNA and its structur

Answer 3

single-stranded molecules in cells that transfer genetic information from the DNA in the nucleus to the cytoplasm where proteins are synthesized in the ribosomes.

Question 4

What is the structure of adenosine trisphosphate (ATP)

Answer 4

nucleoside triphosphate consisting of a nitrogenous base (adenine) a ribose sugar and three serially bonded phosphate groups

Question 5

Describe the term double helix 5’-3 and 3’-5’

Answer 5

Each end of DNA molecule has a number. One end is referred to as 5’ (five prime) and the other end is referred to as 3’ (three prime)

Question 6

describe the process of semiconservative replication of DNA

Answer 6

This process is known as semi-conservative replication because two copies of the original DNA molecule are produced, each copy conserving the information from one half of the original DNA molecule