1
Q
DNA strands are polymers. This means..
A
that they are made up of lots of repeating units joined together.
2
Q
each ‘unit’ contains..
A
one of four different chemicals called bases.
3
Q
what is the name of the four different chemicals in the repeating units?
A
bases.
4
Q
the four bases are:
A
A (ADENINE) , T (THYMINE) , C (CYTOSINE) , G (GUANINE)
5
Q
What does the structure of a DNA molecule
A
two strands coiled together which makes a double helix (a double stranded spiral).
6
Q
each base links to a base on the opposite strand. state which bases link up with who.
A
A (adenine) , pairs up with T (thymine).
C (cytosine) pairs up with G (guanine).
7
Q
DNA is stored as….
A
chromosomes
8
Q
state the structure of a chromosome.
A
long, coiled up molecules of DNA.
9
Q
an organism’s genome is …
A
all of its DNA
