Mrs angler inro to DNA

What is DNA

Nucleic acid

What does DNA Do?

Molecule that stores all of the necessary information to control cellular activity- e.g specialisation of cells, arrangement of tissues into organs

What is DNA responsible for?

Controlling the synthesis of protiens

What does DNA stand for?

Deoxyribonucleicacid

Where is DNA found?

In the nucleus of cells

What is a Chromosome

A condensed piece of DNA

How many chromosomes do humans have?

46, humans inherit 23 from the mother and 23 from the father

What is a Gene?

Short segments of code used to create different proteins

What is meant when genes are called hereditary information?

It’s the units of hereditary information that we have inherited from our ancestors

Why should chromatids be identical?

In order to pass on important DNA information both sides of chromatids must be the same

What does the centromere of a chromosome do?

Attaches the two chromatids to each other

Histone proteins?

Globular proteins that give the chromosome shape and definition as well as protecting the DNA from being broken or lost

Gene?

Sections of DNA. Hereditary units that code for different characteristics

Nucleotide?

Building blocks of DNA molecules(monomers of DNA)

Nucleus?

Where we house DNA in a cell