Mixture of topics 0.0 / 5 ? BiologyBiological moleculesASAQA Created by: Jade19Created on: 04-01-16 22:58 How is the process of DNA replication started? One strand in the DNA duplex is taken by the enzyme DNA topoisomerase, allowing part of the molecule to unravel to form a replication fork. 1 of 7 What are the Pyrimidines? Thymine, Uracil, Cytosine. 2 of 7 What is a polynucleotide? A linear polymer whose molecule of composed of many nucleotide units, consisting a section of a nucleic acid molecule. 3 of 7 What are the factor that effect enzyme enzyme action? Concentration of substrate, concentration of enzyme, temperature and pH. 4 of 7 What are the adaptions for the rapid diffusion in plant? Many small pores (stomata), numerous interconnecting air spaces that occur throughout the mesophyll, large surface area of mesophyll. 5 of 7 What is the secondary structure of a protien? The shape of a polypeptide chain after being bonded with hydrogen. 6 of 7 What is the tertiary The bending/twisting of the polypeptide helix into a compact structure. Has 3 types of bond; disulfide, ionic and hydrogen. 7 of 7
Cells AQA AS Biology PART 6 of 6 TOPICS: Cell recognition and the immune system 5.0 / 5 based on 1 rating Teacher recommended
Comments
No comments have yet been made