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12. If pyruvate is the terminal electron receptor, the end product will be (in l

ID: 252335 • Letter: 1

Question

12. If pyruvate is the terminal electron receptor, the end product will be (in like a person): a. butyric acid b. ethanol c. propionic acid actic acid 13. Which enzyme will digest starch? a. amylase b. cellulose c. lipase d. beta-oxidation 14. What enzyme joins two strands of DNA together? a. DNA ligase b. DNA polymerase c. helicases d. primers e. DNA gyrase 15. The "system processing and properly folding a protein is (in mammals) called: a. polysome b. elongation C: chaperone d. Svedberg 16. Define quorum sensing? (1 pt) 17. The primer for DNA synthesis is: a. protein b. lipid c. DNA d. RNA

Explanation / Answer

13. A) amylase

Carbohydrates or starch would be digested inside the mouth, and also the stomach as well as the small intestine. Starch digestion starts in the mouth with the action of the enzyme carbohydrase and amylase. The action of amylase is to degrade starch into sugars.

14. A) DNA ligase

DNA ligase is the enzyme that would be creating phosphodiester bonds between two DNA strands. The polymerase would be synthesising the nucleotides but DNA ligase would be repairing single stranded breaks by repairing ligase with the use of complementary strand in the form of a template. The ligase helps in creation of the last phosphodiester bond.

15. C) chaperone

Molecular chaperones are referred to as proteins that would be assisting on the folding or unfolding in the form of covalent bonds. As macromolecules would be performing normal biological functions, chaperones would be present for completing the assembly and folding of proteins.

16. Quorum sensing is the stimuli system as well as the response which would be related to the density of a population. Quorum sensing would be enabling the bacteria in restricting gene expression for higher density of cells where the resultant phenotype would turn out to be the most beneficial.