genetics Flashcards
what does DNA make up?
chromosomes
what is a monomer of DNA called?
nucleotide
what are deoxyribonucleic acid and ribonucleic acid?
polymers made of respecting nucleotides
what sugars are found in DNA and RNA?
DNA = deoxyribose
RNA = ribose
what is the shape of sugar?
pentagon (5 sides)
what is the shape of the base?
rectangle
what is the shape of the phosphate?
circle
how do nucleotides join together?
condensation reaction (water is taken away)
what are the bases of DNA?
A + T
G + C
what do hydrogen bonds do in DNA?
allows bonds to unzip themselves for protein synthesis and cell division
what are the RNA bases?
A + U
G + C
give 4 features of RNA structure?
single stranded
linear molecule
contains ribose sugar
generally smaller
give 4 functions of DNA?
carries the code to make proteins
produces an identical molecule of itself
enables organisms to make copies of themselves
contains genes
give 3 functions of RNA?
role in protein synthesis
controls and enables gene expression
makes single-stranded copy of DNA’s genetic code in nucleus