AQA AS Biology 1

Welcome to your AQA AS Biology 1

1. Which indicates an indirect evidence for evolution?
2. The most abundant organic molecule present on the earth.
3. Which of the following is a double membrane bound organelle?
4. What happens when a Biuret reagent is added to a solution of free amino acids?
5. Select the incorrect statement about monosaccharides.
6. The accepted theory of how eukaryotic cells evolved from prokaryotic cells.
7. A substance that speeds up a chemical reaction without being changed by the reaction.
8. The fuction of internal membranes in eukaryotic cells.
9. Select the incorrect statement from the following.
10. Which is known as the universal energy carrier?
11. Which of the following is a single membrane bound organelle?
12. Select the incorrect statement with regard to cell-surface membranes.
13. Select the incorrect sentence out of the following.
14. A condensation reaction between two amino acids forms the following bond.
15. Which of the following is not a disaccharide?
16. Which of the following does not react with Benedict's solution?
17. What are the components of a nucleotide?
18. The composition of starch.
19. Select the incorrect statement regarding cells.
20. Which of the following has no membrane?
21. 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
22. Choose the correct sentences out of the following.

a) All enzymes are proteins.
b) Some hormones are proteins.
c) Proteins are micromolecules.
d) All proteins are made from different monomers.
23. Select the incorrect statement about triglycerides.
24. The most common protein found in animals.
25. The bond which does not exist in the structure of a protein.