DNA Structure

Question 1

DNA

Answer 1

Stands For: Deoxyribonucleic Acid

It is a chemical, molecular code that carries genetic info. This code instructs your cells how to behave.

Question 2

DNA Structure

Answer 2

DNA is made of the backbone and nitrogen-rich bases. The backbone is made of sugar (deoxyribose) and phosphate molecules. The backbone is in the shape of a double helix. The bases make up the genetic code.

Question 3

Nucleotide

Answer 3

A deoxyribose + Phosphate molecule + base = nucleotide.

Question 4

Gene

Answer 4

A small section of a chromosome. A gene consists of genetic code. A chromosome contains between 200 - 2000 genes.

Question 5

Chromosome

Answer 5

A tightly coiled DNA strand held together by a centromere.

Question 6

Genetic code

Answer 6

The order of base pairs along a DNA strand. This codes for the behaviour of the proteins/organelles/cell.

Question 7

of Human Chromosomes

Answer 7

46 (23 pairs). In a chromosome pair, one comes from the mother and the other from the father.

Question 8

2 Types of Chromosomes

Answer 8

Autosomal & Sex chromosomes. Sex: males - XY females - XX.

Question 9

Proteins

Answer 9

Made of amino acids. Each amino acid is coded by a sequence of 3 nucleotides. There are many types of proteins including structural, enzymes & regulatory (hormones).

Question 10

Nitrogen Bases

Answer 10

There are 4 bases that make up all genetic code. Adenine (A), Thymine (T), Cytosine (C) and Guanine (G).