1.1 Structure Of DNA

Question 1

Double stranded helix

Answer 1

Nucleotides join together in an antiparallel structure

Question 2

Bonds

Answer 2

Complementary base pairs- weak hydrogen bonds

Sugar-phosphate backbone- strong sugar-phosphate bonds

Question 3

Prokaryotes (Bacteria)

Answer 3

No membrane bound organelles like nucleus

Singular, circular chromosomes and smaller circular plasmids

Question 4

Eukaryotes (Fungal, Animal, Plant)

Answer 4

Membrane bound organelle like a nucleus

Linear chromosomes in nucleus and circular chromosomes in mitochondria and chloroplasts

Question 5

DNA packing in Eukaryotes

Answer 5

DNA molecules tightly coiled and packaged around bundles of protein called histones