Edexcel B AS Biology 1

Welcome to your Edexcel B AS Biology 1

1. A condensation reaction between two nucleotides forms the following bond.
2. The site of DNA replication.
3. Which property of water provides a cooling effect with little loss of water through evaporation?
4. Choose the correct statement regarding DNA replication.
5. The type of bond broken by the enzyme DNA helicase during DNA replication.
6. What are the components of a nucleotide?
7. A condensation reaction between two amino acids forms the following bond.
8. Choose the incorrect statement regarding DNA replication.
9. Select the incorrect statement with regard to water.
10. Which of the following is exposed upon unwinding the double helix structure of the DNA during DNA replication.
11. Which of the following is responsible for transfering genetic information from DNA?
12. Which of the following is a polymer of nucleotides?
13. Which of the following solutions turn milky white upon adding ethanol and water?

a) A slice of potato
b) Milk
c) Palm oil
d) A piece of apple
14. The enzyme responsible for forming hydrogen bonds during the process of DNA replication.
15. What happens when a Biuret reagent is added to a solution of free amino acids?