Tried answering these qns correct me if I am wrong.
1. To determine the bacteriologic purity of metropolitan water supplies, sanitary engineers routinely check the water for the presence of which of the following:
a. Escherichia coli ( MY ANSWER)
b. Salmonella typhi(ans)
c. Giardia Lmablia
d. Entamoeba histolytica
e. Shigells dysenteriae
2. Which of the following primary grooves uniting in the dispal pit on the occlusal surface of the mandibular second molar represents the one that normally has no counterpart in the distal pit of the first molar?
a. Distolingual
b. DF Triangular
c. DL Triangular
d. Distal Marginal
e. Distal portion of the central (MY ANSWER)
3. On the crown of an incisor, which of the following features separates the labial lobes?
a. Mamelons
b. Central Groove(ans)
c. Lingual Groove
d. Facial Developmental Depressions (MY ANSWER)
4. When viewed from the sagittal plane and progressing anteriorly, the axial inclination of the anterior teeth inclines
a. lingually
b. distally
c. mesially (MY ANSWER)
d. facially(ans)
5. Which of the following is the SMALLEST root that is on a maxillary first molar?
a. DF(ans) (CORRECT)
b. DL
c. MF
d. ML
e. Lingual
6. In a left lateral movement, which cusp of the mandibular right first molar has the potential to contact the mesiolingal cusp of the maxillary right first molar?
a. Distal
b. Distofacial(ans) ( CORRECT)
c. Mesiolingual
d. Distolingual
7. What approximate percentage of the total buccolingual dimension of a posterior tooth does the occlusal table represent?
a. 30-40
b. 40-50
c. 50-60
d. 60-70 ( MY ANSWER)
e. 100
8. Which of the following represents the pulmonary neoplasm MOST likely to produce ACTH?
a. Mesothelioma
b. Adenocarcinoma
c. Small cell carcinoma
(CORRECT)
d. Squamous cell carcinoma
e. Bronchio;palveolar carcinoma
9. Integration of the F factor plasmid into yhr chromosome
a. is essential in order for the chromosome to beb transferred during conjugation
b. is essential in order for the F factor to be transferred during conjugation (ans) (CORRECT)
c. leads to the formation of F pill
d. produces a mutation
10. Which of the following chemical disinfectants has the narrowest antimicrobial spectrum?
a. lodophors
b. Phenolics
c. Glutaraidehyde
d. Chlorine compounds
e. Quaternary ammonium compounds(MY ANSWER)
11. Which of the following methods of sterilization requires the LONGEST time?
a. Steam under pressure at 250F (121C)
b. Steam under pressure at 340F (171C)
c. Undersaturated chemical vapor at 270F (132C) ( MY ANSWER)
d. Dry heat at 320F (160C)(ans)
e. Dry heat at 340F (171C)
12. Each of the following statements about lymphocyte activation is correct EXCEPT one. Which one is the EXCEPTION?
a. Interleukin 5 is a B cell growth and differentiation factor
b. Interleukin 2 stimulates proliferation of T and B lymphocytes
c. B lymphocytes recognize antigen on the surface of antigen-presenting cells in the context of HLA-D molecules. ( ANS, NOT CERTAIN)
d. T lymphocytes recognize antigen on the surface of antigen-presenting cells in the context of HLA-B molecules.
13. WHich of the following represents the primary function of S-IgA?
a. Aggregates microrganisms and prevents colonization
( MY GUESS TOO)
b. Activates complement in secretory fluids
c. Promotes phagocytosis by monocytes
d. Activates mast cells
e. Activates NK cells
14. Each of the following is a type of inflammatory exudate EXCEPT one WHich one os the EXEPTION?
a. Serous ( MY ANSWER)
b. Fibrous
c. Purulent
d. Fibrinous
e. Pseudomembranous
15. Which of the following is the MOST common location for an atherosclerotic included aneurysm?
a. Thoracic aorta
b. abdominal aorta?????(CORRECT)
c. Coronary arteries
d. arch of the aorta
e. common illac arteries
16. Which of the following statements regarding Th1 and Th2 cells is CORRECT?
a. Th1 cells are CD4 whereas Th2 cells are CD8.
b. Th1 cells develop in the bone marrow, whereas Th2 cells develop in the thymus.
c. Th1 cells and Th2 cells are distinguished by the cytokines they secrete.
d. Th1 cells recognize peptide and Class 1 MHC, whereas Th2 cells recognize peptide and Class II MHC.( MY GUESS,NOT CERTAIN)
e. Both Th1 and Th2 cells function by releasing perfolin and granzymes following activation.
17. Solution A has a pH of 7.0, and Solution B has a pH of 6.0. Both solutions are of equal volume. Which of the following statements about Solutions A and B is MOST accurate?
a. A has 1/10 as many hydrogen Ions as B.
b. A has 10 times more hydrogen Ions than B.
c. A has 7/6 of the hydrogen Ion concentration of B.
d. A has 6/7 of the hydrogen Ion concentration of B.
18. Each of the following polymers is correctly paired with itds components precursor EXCEPT one. Which one is the EXCEPTION?
a. Dextran - Sucrose
b. Glycogen - Fructose (MY ANSWER)
c. Mutan - Sucrose(ans)
d. Glycogen - UDP-Glucose
e. Levan - Sucrose
19. A person who has a long history of anabolic steroid abuse but has recently stopped is likely to exhibit each of the following characteristics EXCEPT one. Which one is the EXCEPTION?
a. Sterility
b. Low FSH Levels
c. Low testosterone levels
d. Decreased number of spermatids(ans)
20. How many nucleotides are needed to code for the protein with 150 amino acids.
a. 50
b. 150
c. 300
d. 450 (just a guess)(CORRECT)
e. 600
21. Cortisol stimulates synthesis in the liver of
a. glucokinase
b. phosphofructokinase
c. pyruvate carboxylase (MY ANSWER)
d. pyruvate kinase
22. Optic nerve fibers from the nasal half of the retina cross the midline and enter the optic tract of the opposite side by the way of the
a. Optic chiasma
b. lateral geniculate body
c. bipolar cells of the retina????
d. brachium of the superior colliculus
e. geniculocalcarine tract (optic radiations)
23. A blow that shelters the coracoid process will have a direct effect on which of the following pairs of muscles?
a. Serratus anterior and pectoralis major
b. Subscapularis and pectoralis major
c. Biceps brachil and pectoralis minor
d. Subscapularis and subclavius
e. Deltoid and subclavius (MY ANSWER)
24. A tendon consists main ly of
a. reticular fibers(ans) (CORRECT)
b. elastic fiber bundles
c. loose collagenous bundles
d. dense, regular, collagenous bundles
e. dense, irregular, collagenous bundles
25. Which of the following functional groups are essential for a substance to act as a amphipathic (amphiphillic) molecule?
a. Polar, nonpolar(ans)( CORRECT)
b. Polar, negatively charged
c. Nonpolar, positively charged
d. Cyclic, hydrophilic
e. Brached, hydrophilic
26. Each of the followng factors affects heights of cusps and depths of fossae on restorations EXCEPT one. Which one is the EXCEPTION?
a. Curve of Spee
b. Intercondylar distance ( MY ANSWER)
c. Vertical overlap of anterior teeth
d. Horizontal overlap of anterior teeth
e. Steepness of the articular eminence
27. Which of the following roots of teeth would MORE frequently contain a single root canal?
a. Maxillary incusors(ans)( CORRECT)
b. Mandibulaor incisors
c. Maxillary first premolars
d. Mesiobruccal root, maxillary molars
e. Mesial root, mandibular molars
28. The distlingual cusp of the right mandibular first molar is fractured by the excessive contact with the opposing maxillary molar during right lateral excursion. Which of the following is the MOST likely location of the interference.????
a. Lingual surface of a maxillary lingual cusp ( MY GUESS)
b. Facial surface of a maxillary lingual cusp
c. Facial surface of a maxillary facial cusp
d. Lingual surface of a maxillary facial cusp
29. When viewed sagitally, which of the following teeth have their long axes at an angle LEASt perpendicular to the occlusal plane?
a. Maxillary incisors
b. Mandibular canines
c. Mandibular premolars
d. Maxillary premolars
e. Mandibular first molars
[/QUOTE]( MY GUESS)