Key area 1.1 structure and organisation of DNA Flashcards
what determines which proteins are made
the order of bases
what is a unit of DNA
Nucleotide
what bonds join the deoxyribose sugar to the phosphate molecule
strong sugar-phosphate bonds.
what type of bonds join the organic bases in the middle
weak hydrogen bonds
what is the word used when the DNA strands go in opposite directions
antiparallel
what base pairs to adenine on the DNA molecule
Thymine
what base pairs to guanine on the DNA molecule
cytosine
What base pairs to adenine on the RNA molecule
Uracil
whats a prokaryotic cell
cells without a membrane bound nucleus
whats a eukaryotic cell
cells with membrane bound nucleus
how is DNA stored in prokaryotic cells
in single, circular chromosome and in smaller circular plasmids
how is DNA stored in the nucleus in eukaryotic cells
in the nucleus, DNA is arranged into linear chromosomes
how is DNA stored in the mitochondria and chloroplasts of a eukaryotic cells
circular chromosomes
what proteins packs DNA tightly
histone proteins
state another location other than the nucleus where DNA is found in eukaryotic cells
mitochondria
