Bio 3100 W25 Homework
This homework page will be added periodically until reaching 70 questions. At that point, fill up
the scantron (to be provided) and turn it in on the assigned date
1. In the reaction of catalase with H 2O2 the atoms that get oxidized and reduced respectively
are
a. O and O b. H and H c. O and H d. H and O
2. The reaction of an acid with an amine normally occurs when one makes
a. triglycerides b. carbohydrates c. proteins d. nucleic acids
3. Amides are present naturally in
a. carbohydrates b. proteins c. triglycerides d. nucleic acids
4. Cis and trans faces are present in the
a. RER b. mitochondria c. SER d. golgi
5. Hydrolysis of an ester produces
a. an acid and an amine b. two acids
c. an acid and an alcohol d. two alcohols
6. The carbon attached to a primary alcohol has an oxidation number of
a. -2 b. -1 c. +1 d. +2
7. The carbon of an aldehyde has an oxidation number of
a. +2 b. +1 c. -1 d. -2
8. The carboxylic carbon of a carboxylic acid has an oxidation number of
a. 0 b. +1 c. +2 d. +3
9. The carbon of secondary amine has an oxidation number of
a. -2 b. -1 c. 0 d. +1
10. The S in H2SO4 is
a. +3 b. +4 c. +5 d. +6
11. Majority of carbons in 18:1(9) have the oxidation number
a. -1 b. -2 c. 0 d. +1
12. The compound all cis 18:3(9,12,15) has the common name
a. stearic acid
b. oleic acid
c. linoleic acid
d. -linolenic acid
13. The compound all cis 18:3(9,12,15) is an omega-
a. 6 b. 5 c.4 d. 3
14. The fatty acid most commonly made by animal cells is
a. myristic c. stearic
b. lauric d. palmitic
15. If a protein has a lot of type I turns, most likely has the aa
a. Pro b. Gly c. Ala d. Val
16. conformations are present in
a. nails b. silk c. collagen d. feathers
17. If the Kd of a protein with ligand X is 1x10-18 M, it means the binding is
a. very strong b. strong c. very weak d. weak
18. Conversion of glucose to glucose-6-phosphate is done by an enzyme of the type
a. ligase c. transferase
b. oxidoreductase d. lyase
19. Galactose can be converted to its epimer glucose using an enzyme of the type
a. hydrolase c. transferase
b. isomerase d. oxidoreductase
20. Alcohol dehydrogenase converts ethanol to acetaldehyde. The enzyme is a(n)
a. ligase c. transferase
b. oxidoreductase d. lyase
21. Agarose contains:
a. sulfate b. pyruvate c. sulfate and pyruvate d. sulfite and pyruvate
22. The number of pKas of the free amino acids attaching sugars in glycoproteins is:
a. 9 b. 8 c. 6 d. 4
23. The connection between the base and the sugar in nucleotides is
a. b. c. or d. undefined
24. A nucleoside has
a. base and sugar c. base and phosphate
b. base, sugar and phosphate d. base, sugar and triphosphate
25. The alkaline hydrolysis of RNA produces a cyclic phosphate between carbons:
a. 2 and 3 c. 2 and 5
b. 3 and 5 d. 3 and 4
26. An example of a secondary structure of nucleic acids is
a. cruciforms c. overwinding
b. double helix d. underwinding
27. Syn-cytidine exists in DNA
a. A b. B c. Z d. none
28. The name Restriction Endonucleases refer to the fact they can only cleave:
a. some sites only c. foreign DNA only
b. purine site only d. pyrimidine sites only
29. The common name for 18:3 (9,12,15) is:
a. oleic b. -linoleic c. -linolenic d. palmitolenic
30. Inositol is a
a. cyclic sugar c. cyclic tri-alcohol
b. linear polyalcohol d. cyclic hexa-alcohol
31. Plasmalogens are:
a. sphingolipids with one ether linkage
b. phospholipids with two ether linkages
c. phospholipids with one ether linkage
d. phospholipids with no ester linkage
32. The number of ester groups in sphingolipids is:
a. 0 b. 1 c. 2 d. 3
33. The only vitamin not derived from isoprene is
a. A b. E c. K d. D
34. A GPI-anchored protein can be removed from the membrane using:
a. detergent c. chelating agent
b. urea d. phospholipase
35. The -adrenergic receptor is a hepta-helical single polypeptide with cytosolic carboxy
group. This protein is classified as type:
a. I b. II c. III d. IV
36. The transporter for heart and fat tissue that is not basal is GLUT:
a. 1 b. 2 c. 3 d. 4
37. The chloride-bicarbonate exchange protein is an example of a:
a. primary active transport c. symporter
b. antiporter d. simple diffusion
38. The residue that is phosphorylated in primary active transport is:
a. His b. Asn c. Asp d. Glu
39. The residue that acts as an electrostatic repulsion in aquaporins is:
a. His b. Asn c. Asp d. Glu
40. Glucose and amino acids are moved in the intestine by:
a. Primary active transport followed by facilitated diffusion
b. Secondary active transport followed by primary active transport
c. An antiporter followed by a uniporter
d. A symporter followed by a uniporter
41. Calcium stored in the SER most likely move into the cytoplasm by:
a. primary active transport or facilitated diffusion
b. primary active transport
c. facilitated diffusion
d. secondary active transport
