OCR GATEWAY BIOLOGY B3

Molecules of life :) 

liver+ muscle = large number of mitochondria - because of large amounts of respiration taking place.

ribosomes = too small to be seen with a light microscope - found in the cytoplasm - site of protien synthesis

Structure of DNA = two strands coiled togeather to form a double helix.

- each strand contains Bases - 4 different types 

- cross links are formed by the pairs of bases 

chromosome- long coiled molecule of DNA - divided into up into reigions called genes

Gene - contains different sequences of bases 

Bases- different combinations = codes for diferent protiens 

protiens - made…