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Exam 3 Unsolved Questions | Elements of Organic and Biochemistry | CHEM 1301, Exams of Biochemistry

Seton Hall University (SHU)Biochemistry

Material Type: Exam; Class: Elements of Organic and Biochemistry; Subject: Chemistry; University: Seton Hall University; Term: Unknown 1989;

Typology: Exams

Pre 2010

Uploaded on 08/08/2009

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Chem 1301 - Elements of Chemistry I
Instructor: Prof. John R. Sowa, Jr.
Seton Hall University
Exam III - 100 points
Take home exam: Due by during Final Exam period, rm 62 Corrigan, 8:45 – 10:25 AM
on Thursday, May 4th. Exam must be handed to Professor in person.
1)_________
2)_________
3)_________
4)_________
5)_________
TOTAL_________
Good Luck!
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pf4
pf5
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Chem 1301 - Elements of Chemistry I Instructor: Prof. John R. Sowa, Jr. Seton Hall University Exam III - 100 points Take home exam: Due by during Final Exam period, rm 62 Corrigan, 8:45 – 10:25 AM on Thursday, May 4th. Exam must be handed to Professor in person. 1)_________ 2)_________ 3)_________ 4)_________ 5)_________ TOTAL_________ Good Luck!

  1. (14 points, 2 points each) Select the best answer for each following multiple choice question. a) Food preservation is often achieved by enzyme inhibition. Pickles that are stored in vinegar (dilute acetic acid) are preserved by what mechanism: a. increasing the temperature b. decreasing the temperature c. increasing the pH d. decreasing the pH b) Muscle contraction occurs by what mechanism: a. breaking the myosin-ATP complex b. making a myosin-actin complex c. breaking a myosin-actin complex d. both a and b c) What is the mode of bacterial action of penicillin? a. It inhibits the transpeptidase enzyme that makes bacterial cell walls rigid b. It kills all bacterial that do not need a cell wall c. It prevents folic acid synthesis by bacteria d. It inhibits protein synthesis by bacteria d) Muscle cramps are caused by the a. Accumulation of lactic acid b. Accumulation of pyruvic acid c. Speeding up the citric acid cycle d. Speeding up aerobic glycolysis e) In the glycogen storage disease called Cori's disease, the faulty enzyme is a. maltase b. phosphorylase c. debranching enzyme d. phosphotriose isomerase
  1. (21 points) Short answers. a. (9 pts, 3 ea) Enzymes are divided into 6 catagories as follows: Oxidoreductases (deydrogenases and reductases), Transferases, Hydrolases, Lysases, Isomerases, Synthases (or ligases) For each reaction below state what category of enzyme is used: i)
    ii) ____________________ iii) Step 1___________________ Step 2___________________ b. (12 pts, 4 ea) A patient has a heart attack via coronary thrombosis. Describe what the purpose of the following treatments are: i. Monitoring the levels of the enzyme AST (aspartate aminotransferase). ii. Give a chemical explanation for what triggers the "cramp" and what a heart massage does.
  1. (21 pts, 3 ea) Below is drawn a cross-section of the mitochondrion. a. What happens in the glycolysis process and where does this process occur? b. What happens in the oxidative phosphorylation cycle and where does this process occur. c. What is the most important molecule produced in the oxidative phosphorylation cycle? Where in the cycle is this molecule generated?
  1. (24 pts, 3 ea) The diagram below is the catabolic pathway for carbohydrates. Important compounds involved in this pathway are indicated by lines. Important multistep pathways are indicated by boxes or circles. Match the important compounds with the compounds on the next page. Fill in the important step pathways from information you learned in class.
  1. (10 points) Read the attached report entitled the Impact of DNA on Science and Religion by Jacqueline Phillips (SHU grad ’04). Answer the following questions: a) (2 pts ) What is the central dogma? b) (5 pts) Show how a cell would make the hormone thyroxine from the amino acids Glu, His, Pro via its DNA. Glu + His + Pro  Glu-His-Pro c) (3 pts) Write a written description to a patient in common terms what the term gene therapy means.