- Joined
- Mar 27, 2006
- Messages
- 16
- Reaction score
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1. Which of the following BEST describes the direction of synthesis for DNA, RNA and protein ?
DNA RNA Protein
a. 5' -> 3' 3' -> 5' C-terminal -> N-terminal
b. 5' -> 3', 3' ->5' 3' -> 5' N-terminal -> C-terminal
c. 5' -> 3' 5' -> 3' N-terminal -> C-terminal
d. 3' -> 5' 3' -> 5' N-terminal -> C-terminal
e. 5' -> 3', 3' ->5' 3' -> 5' C-terminal -> N-terminal
2. For which is the first group of the following pairs more likely to be located on the surface of a globular protein than the second group of the pair ?
a. -CONH2 -COO
b. -CH3 -CH(CH3)2
c. -CH20H -NH4
d. -CH3 -CH2OH
e. -CH2SH -COO
3. Which of the following describes the regulation of smooth muscle contraction ?
a. It requires troporun
b. It requires calmodulin
c. It does not require calcium
d. It does not requre myosin kinase
e. It does not require cross-bridge formation
4. A 0.2 mole/liter NaCl solution and a 0.2 mole/liter glucose solution are separated by a membrane that is impermeable to these solutes but is permeable to water. Which of the following statements is correct ?
a. There will be no net movement of water to either solution.
b. Water will go from the glucose to the saline solution
c. Water will go from the saline to the glucose solution
d. Concentration of glucose will decrease
e. Concentration of NaCl will increase
5. Stimulation of sympathetic adrenergic nerves to the blood vessels of an organ causes vasoconstriction because
a. alpha receptors are activated
b. beta receptors are activated
c. nicotinic receptors are activated
d. alpha receptors are inhibited
e. beta receptors are inhibited
6. What is the net change on glutamic acid at a pH of 1 ?
a. +2
b. +1
c. 0
d. -1
e. -2
7. Complementary DNA (cDNA) libraries include
a. all the DNA in the genome
b. only genes with palindromic sequences
c. only the genes that are transcribed into mRNA
d. single-stranded DNA synthesized by reverse transcription
8. A single impulse travels down an alpha motor axon. This results in which of the following ?
a. The activation of a single motor unit
b. The contraction of one muscle fiber
c. A subthreshold generator potential
d. A muscle action potential without contraction
e. Brief repetitive firing of muscle fibers
9. Which of the following portions of the elctrocardiogram corresponds to ventricular repolarization ?
a. P wave
b. T wave
c. PR interval
d. ST interval
e. QRS complex
10. Which of the following EKG intervals represents the propagation time of the cardiac impulse between the SA and AV nodes ?
a. QT
b. QR
c. ST
d. PR
e. QRS
11. Two pulp canals are usually found in which of the following ?
Tooth Root
a. Maxillary first premolar Lingual
b. Mandibular first molar Distal
c. Mandibular second molar Mesial
12. A deep lingual fossa and prominent marginal ridges are MOST characteristic of which of the following anterior teeth ?
a. Maxillary central incisor
b. Maxillary lateral incisor
c. Mandibular lateral incisor
d. Maxillary canine
e. Mandibular canine
13. Which of the following morphologic variations would worsen the prognosis for existing periodontal disease ?
a. Fused roots
b. Excessively long roots
c. Amelogenesis imperfecta
d. Shoveling trait in central incisors
14. Which of the following restorations is the LEAST likely to interfere with a patient's physiologic maximum intercuspal position contacts ?
a. Distolingual Class III on a maxillary right canine
b. MO on a mandibular right first premolar
c. MOD on a maxillary right second premolar
d. MO on a maxillary left first molar
15. Each of the following structures is normally exhibited by mandibular incisors EXCEPT one. Which one is this exception ?
a. Cingula
b. Mamelons
c. Lingual Fossae
d. Marginal ridges
e. Imbrication lines
16. When the mandible makes a right lateral excursion from an ideal intercuspal relation, the mesolingual cusp of the maxillary right first molar passes through which of the following mandibular structures ?
a. Embrasure between first and second molars
b. Embrasure between the first molar and second premolar
c. Lingual groove of the first molar
d. Distofacial groove of the first molar
17. When an adult with a normal occlusion moves the mandible from right lateral relation to maximum intercuspation, which cusp moves between the facial cusps of the maxillary right second molar ?
a. Distofacial of the mandibular first molar
b. Distal of the mandibular first molar
c. Mesofacial of the mandibular second molar
d. Distofacial of the mandibular second molar
e. Mesofacial of the mandibular third molar
18. Which of the following features is common to both mandibular first and second premolars ?
a. Triangular (in outline) occlusal table
b. Horizontal distal marginal ridge
c. Bilaterally symmetrical crown
d. Dissimailar marginal ridges
e. No transverse ridge
19. The contact area that is MOST nearly circular is located on the crown of which of the following maxillary premolars ?
a. Mesial of the first
b. Distal of the first
c. Mesial of the second
d. Distal of the second
20. Each of the following root surfaces on a mandibular first molar normally exhibits a longitudinal groove EXCEPT one. Which one is this EXCEPTION ?
Surface Root
a. Mesial Mesial
b. Distal Mesial
c. Mesial Distal
d. Distal Distal
21. Which of the following represents the MOST powerful muscle of mastication ?
a. Masseter
b. Temporalis
c. Geniohyoid
d. Lateral pterygoid
e. Sternocleidomastoid
DNA RNA Protein
a. 5' -> 3' 3' -> 5' C-terminal -> N-terminal
b. 5' -> 3', 3' ->5' 3' -> 5' N-terminal -> C-terminal
c. 5' -> 3' 5' -> 3' N-terminal -> C-terminal
d. 3' -> 5' 3' -> 5' N-terminal -> C-terminal
e. 5' -> 3', 3' ->5' 3' -> 5' C-terminal -> N-terminal
2. For which is the first group of the following pairs more likely to be located on the surface of a globular protein than the second group of the pair ?
a. -CONH2 -COO
b. -CH3 -CH(CH3)2
c. -CH20H -NH4
d. -CH3 -CH2OH
e. -CH2SH -COO
3. Which of the following describes the regulation of smooth muscle contraction ?
a. It requires troporun
b. It requires calmodulin
c. It does not require calcium
d. It does not requre myosin kinase
e. It does not require cross-bridge formation
4. A 0.2 mole/liter NaCl solution and a 0.2 mole/liter glucose solution are separated by a membrane that is impermeable to these solutes but is permeable to water. Which of the following statements is correct ?
a. There will be no net movement of water to either solution.
b. Water will go from the glucose to the saline solution
c. Water will go from the saline to the glucose solution
d. Concentration of glucose will decrease
e. Concentration of NaCl will increase
5. Stimulation of sympathetic adrenergic nerves to the blood vessels of an organ causes vasoconstriction because
a. alpha receptors are activated
b. beta receptors are activated
c. nicotinic receptors are activated
d. alpha receptors are inhibited
e. beta receptors are inhibited
6. What is the net change on glutamic acid at a pH of 1 ?
a. +2
b. +1
c. 0
d. -1
e. -2
7. Complementary DNA (cDNA) libraries include
a. all the DNA in the genome
b. only genes with palindromic sequences
c. only the genes that are transcribed into mRNA
d. single-stranded DNA synthesized by reverse transcription
8. A single impulse travels down an alpha motor axon. This results in which of the following ?
a. The activation of a single motor unit
b. The contraction of one muscle fiber
c. A subthreshold generator potential
d. A muscle action potential without contraction
e. Brief repetitive firing of muscle fibers
9. Which of the following portions of the elctrocardiogram corresponds to ventricular repolarization ?
a. P wave
b. T wave
c. PR interval
d. ST interval
e. QRS complex
10. Which of the following EKG intervals represents the propagation time of the cardiac impulse between the SA and AV nodes ?
a. QT
b. QR
c. ST
d. PR
e. QRS
11. Two pulp canals are usually found in which of the following ?
Tooth Root
a. Maxillary first premolar Lingual
b. Mandibular first molar Distal
c. Mandibular second molar Mesial
12. A deep lingual fossa and prominent marginal ridges are MOST characteristic of which of the following anterior teeth ?
a. Maxillary central incisor
b. Maxillary lateral incisor
c. Mandibular lateral incisor
d. Maxillary canine
e. Mandibular canine
13. Which of the following morphologic variations would worsen the prognosis for existing periodontal disease ?
a. Fused roots
b. Excessively long roots
c. Amelogenesis imperfecta
d. Shoveling trait in central incisors
14. Which of the following restorations is the LEAST likely to interfere with a patient's physiologic maximum intercuspal position contacts ?
a. Distolingual Class III on a maxillary right canine
b. MO on a mandibular right first premolar
c. MOD on a maxillary right second premolar
d. MO on a maxillary left first molar
15. Each of the following structures is normally exhibited by mandibular incisors EXCEPT one. Which one is this exception ?
a. Cingula
b. Mamelons
c. Lingual Fossae
d. Marginal ridges
e. Imbrication lines
16. When the mandible makes a right lateral excursion from an ideal intercuspal relation, the mesolingual cusp of the maxillary right first molar passes through which of the following mandibular structures ?
a. Embrasure between first and second molars
b. Embrasure between the first molar and second premolar
c. Lingual groove of the first molar
d. Distofacial groove of the first molar
17. When an adult with a normal occlusion moves the mandible from right lateral relation to maximum intercuspation, which cusp moves between the facial cusps of the maxillary right second molar ?
a. Distofacial of the mandibular first molar
b. Distal of the mandibular first molar
c. Mesofacial of the mandibular second molar
d. Distofacial of the mandibular second molar
e. Mesofacial of the mandibular third molar
18. Which of the following features is common to both mandibular first and second premolars ?
a. Triangular (in outline) occlusal table
b. Horizontal distal marginal ridge
c. Bilaterally symmetrical crown
d. Dissimailar marginal ridges
e. No transverse ridge
19. The contact area that is MOST nearly circular is located on the crown of which of the following maxillary premolars ?
a. Mesial of the first
b. Distal of the first
c. Mesial of the second
d. Distal of the second
20. Each of the following root surfaces on a mandibular first molar normally exhibits a longitudinal groove EXCEPT one. Which one is this EXCEPTION ?
Surface Root
a. Mesial Mesial
b. Distal Mesial
c. Mesial Distal
d. Distal Distal
21. Which of the following represents the MOST powerful muscle of mastication ?
a. Masseter
b. Temporalis
c. Geniohyoid
d. Lateral pterygoid
e. Sternocleidomastoid