IB Biology -nucleic acids

what are nucleic acids responsible for?

storing genetic information

nucleic acids are made up of?

monomers

what are monomers

small molecules that bond together to create complex structures

draw a nucleotide

what do all bases contain

nitrogen

5 carbon sugars=

deoxyribose

what are the base and phosphate linked by ……. to pentose sugar

covalent bonds

what are the base’s linked by

hydrogen bonds

phosphate and pentose sugar link to each nucleotide forming

strong sugar-phosphate backbone

is RNA single stranded or double stranded

single stranded

what are the bases of DNA

adenine,cytosine,guanine,thymine

What are the bases of RNA

adenine,cytosine,guanine,uracil

what is teh number of sequences allowed

they are infinite

what shape does DNA have

double helix

A=T

C=G

complementary base pairing

when they run in opposite directions this is called

antiparallel

each end ends with something different want do they end with

phosphate group

deoxyribose

what happens when 2 strands go in the same direction

bases cant form hydrogen bonds with eachother

what are the differences between DNA and RNA

DNA: double stranded, A,C,T,G. the sugar= deoxyribose

RNA=single stranded ,A,C,U,G the sugar-ribose

what is the difference between deoxyribose and ribose sugar molecule

the OH and H on 2

what enzyme is used for transcription

RNA polymerase

Transcription

DNA is copied into mRNA

translation

forming polypeptide chain from mRNA

what is mRNA?

a copy of a single gene

when does translation happened

when strand leaves nucleus