a Zoe Cohn 6 éve
85
Még több ilyen
DNA- double helix (spiral), souble nucleotide chain RNA- single nucleotide chain
4 layers and their structure:
Primary layer-sequence of amino acids
Secondary layer- chains coil or fold. Two types: alpha helix and pleated sheet
Tertiary layer: attraction between alpha helices and the beta sheets
Quaternary Layer: one or more chains bonded together ex: collagen and hemoglobin
Eacn amino acid is the same excpet for the variable (function ) gourp.
Some Polar, some non polar
Amino acid chained to plymer
structure: glycerol+ fatty acid
Long hydrocarbon chain
Ex: C6H12)6