11 Jun An enzyme system is saturated due to a high concentration
Question
An enzyme system is saturated due to a high concentration of a toxic substance. This would result i:
Low concentration of toxic intermediate
high concentration of toxic intermediate
a normal rate of metabolism
a rapid excretion of this toxic substance
storage of the toxins in the liver, in a mammal
2. The largest number of amino acids are derived from which pathway (in mammals)?
Krebs
cytochrome system
calvin cycle
glycolysis
3. Sulfa drugs inhibit the synthesis of folic acid in bacteria in a non-completive way?
a. True
b. False
4. If pyruvate is the terminal electron receptor, the end product will be (in a person)?
a. butyric acid
b. ethanol
c. propionic acid
d. lactic acid
5. The “system” processing and properly folding a protein is (in mammals) called:
a. polysome
b. elongation
c. chaperone
d. Svedberg
6. On the 50s subunit, the ‘s’ stands for:
a. polysome
b. elongation
c. chaperone
d. Svedberg
8. A base substitution could result in a :
a. wild type
b. missense mutation
c. silent mutation
d. all of the above
9. Which is an effective agent against that can be used to prevent spread of TB?
a. chlorine aerosol
b. UV light
c. ethidium bromide
d. thymie spray
10. Transduction uses what type of “mechanism” to get DNA into bacterial cell?
a. a phage
b. double stranded DNA probe
c. phenol
d. detergent
11. Antibiotic resistant (genetically) is commonly associated and transferred with/among bacteria through?
a. ribosomes
b. plasmids
c. cell wall structures
d. all of the above
12. In conjugation, the connecting structure between the two cells (gram negative -G-) is called:
a. pilus
b. connector
c. transfer device
d. tubule
13. Malaria is a :
a. protozoan
b. fungi
c. algae
d. bacteria
14. Which disease is associated with the southwest area of the US and exists as a soil organism?
a. Valley Fever
b. MRSA
c. VRSA
d. Tina capitis
15. Mushrooms are in what “group” (specific)
16. The genetic material in viruses is/are?
a. DNA
b. RNA
c. a and b
d. a and c
17. Explain briefly the importance of the Avery et al., experiment demonstrating transformation to medical/clinical microbiology (in a hospital)?
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