SHAPE OF DNA

Question 1

DNA is?

Answer 1

double stranded (which are twisted around each other creating a “double helix” similar to a twisted ladder

Question 2

what is each DNA strand made up of?

Answer 2

nucleotides, connected through chemical bonds

Question 3

what are the “rungs” of the ladder made from?

Answer 3

complementary pairs E.G.

A+T
G+C

Question 4

what are the “sides” of the ladder made from?

Answer 4

alternating sugar and phosphate groups (this is called the sugar - phosphate backbone)

Question 5

what are the nucleotides joined together by?

Answer 5

covalent bonds -> these are very strong

Question 6

what are the two strands joined together by?

Answer 6

hydrogen bonds -> these are very weak

Question 7

weak hydrogen bonds allows:

Answer 7

strands to be superstar during DNA replication and protein synthesis without destroying the DNA completely

Question 8

where is DNA in eukaryotic cells (e.g. animal cells)?

Answer 8

Nucleus

Question 9

what does DNA code for?

Answer 9

protein synthesis, replicate cell division, growth, transferring genetic information

Question 10

why is the nucleus the control centre?

Answer 10

it dictates what occurs and what replicates