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Cell Biology Practice Test: Chemical Basis of Life
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Topics include: Acids, Bases & Buffers, Carbohydrates, Lipids, Proteins, Nucleic Acids, Protein Misfolding, Chaperones, & Macromolecules. The chemical basis of life includes the following elements: Carbon: The foundational element for life on Earth. Carbon is the fourth most abundant element in the universe and is present in all living things. It is the chief building block of all biomolecules. Oxygen: The most abundant element in the human body, making up 65% of it. Hydrogen: Abundant in the body because it is up to 60% water. Nitrogen: A major element in the chemical basis of... Show more
Cell Biology Practice Test: Chemical Basis of Life
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25 Questions

1. A solution having a pH of 6 has a proton concentration of _______
2. Lipids cannot dissolve in _____________
3. Ribozymes are _____________
4. Carbonic acid and bicarbonate ions buffer which of the following?
5. Enzymes in a cell can distinguish between L and D forms of sugar.
6. The compounds which have same chemical reactivity but structures which are mirror images of each other are known as ____________
7. Amyloid is a ____________
8. Which protein of the smaller subunit of bacterial ribosome was found to have a function in ribososme assembly?
9. Fructose is a _____________
10. Which protein is involved in Creutzfeld-Jacob disease (CJD)?
11. Microorganisms use D-amino acids.
12. Which of the following molecules bind to nascent polypeptides synthesized on the ribosomes?
13. What protein makes up spider silk?
14. What is the major difference between a fat (triacylglycerol) and a phospholipid (diacylglycerol)?
15. The longest known polypeptide is of the muscle protein called __________
16. Which of the following steroids is a precursor of hormones such as testosterone, progesterone and estrogen?
17. Which types of bonds are found in sugars?
18. Which type of bonds present in vegetable fats account for their liquid state?
19. Heptoses are __________
20. What are molecular chaperones?
21. TMV particles are not capable of self-assembly.
22. The tertiary structure of a protein corresponds to which energy state?
23. In addition to amyloid-β peptide, which other protein is misfolded in the brains of Alzheimer’s disease patients?
24. The mutated and normal prion proteins associated with CJD have the same amino acid sequence.
25. How many types of nucleotides are present in DNA?