revision term 1 grade 12

building blocks of nucleic acids

components of a DNA nucleotide

• phosphate

• sugar

• deoxyribose sugar

• phosphate group

base not found in RNA

• Cytosine

• Adenine

• Thymine

• Uracil

Differences in RNA and DNA

• Uracil is found in RNA whereas Thymine is found in DNA

• RNA has ribose sugar and DNA has Deoxyribose sugar

• RNA is single stranded and DNA is double stranded

• DNA is stable and RNA is less stable

draw metaphase 2 with 3 chromosomes

scientist responsible for the discovery of DNA strcuture

• rosalind franklin

• watson

• maurice

• crick

two places where DNA is found in animals

• nuclear DNA

• Skin DNA

• Mitochndrial DNA

• nail DNA

the natural shape of DNA

the role of DNA

• passess on heredity characteristics

• controls the functioning of cells

• regulate the functioning of genes

• identify criminals

name 3 types of RNA