12-12-2011, 02:03 PM
4.During bacteriophage T7 infection of a single Escherichia coli cell,1000 particles are released.One of these particles contains fragment of the E.coli chromosome rather than the T7 chromosome.will this phage be able to inject its DNA into an E.coli cell,and,if so, how many T7 particles will be produced by this cell?
able to inject DNA #of T7 particles produced
A) yes 1000
B) yes 100
C) yes 1
D) yes 0
E) no 0
12. when adiposite triglycerides are mobilized,the non fatty acid domain of this molecule can be used by the liver for gluconeogenesis.which of the following enzymes initiates this process?
A)1,3 diglycerate kinase
B)fructose 1,6-bisphosphate
C)glucokinase
D)glyceraldehyde 3 phosphate dehydrogenase
E)glycerol kinase
F)hexokinase
15. A 55-year-old Native American woman who lives alone is brought to the emergency department after a minor fall in her home, which her mother witnessed. She tells her physician that her husband, who died 6 weeks ago, comes to visit her every night and gives her guidance. She also states that he complains of being lonely and is waiting for her to join him. She states that her appetite and energy are normal and denies suicidal ideation. Physical examination shows a bruised arm and leg. Neurologic examination and CT scan of the head show no abnormalities. Which of the following is the most appropriate next step for the physician?
A) Ask her relatives if speaking to deceased loved ones is common to their culture
B) Ask her relatives if there is a family history of major depressive disorder with psychotic symptoms
C) Ask her relatives if there is a family history of schizophrenia
D) Order an EEG to determine if the patient is sleep-deprived
E) Order an MRI of the head
17.A 69 year old woman is brought to the emergency department 1 hour after the sudden onset of crushing ,sub sternal chest pain and nausea.Physical examination shows pallor and diaphoresis .An ECG and an evaluation of serum cardiac enzymes confirm a diagnosis of MI of the anterior wall. activation of platelets and segmented neutrophils during thrombogenesis in the patient caused the release of cytokines ,including platelet derived growth factor.the mitogenic signal provided by this cytokine to smooth muscle cells at the sites of vascular injury in this patient is most likely to be inhibited by which of the following intracellular enzymes?
A)aminotranferase
B)glycosylhydrolase
C)kinase
D)lipase
E)peroxidase
F)phosphatase
19.A 55 year old woman is treated with 500mg of drug X three times daily for cancer pain .she is pain free but she develops nausea ,vomitings and diarrhea ,requiring cessation of drug X.drug y is started at 20 mg twice daily.She is pain free, her appetite improves ,and she gains weight.which of the following best describes the maximal efficacy of these drugs.
A)Drug X is more efficacious than drug Y
B)Drug Y is more efficacious than drug X
C)Drug X and Y are equally efficacious
45.A 2 year old boy developed the vesicular lesions shown 2 days ago. which of the following best describes the virus causing the lesions.
nucleic acid symmetry present
A)Ds RNA icosahedral yes
B)Ds RNA helical yes
C)Ds RNA icoso no
D)SS RNA icoso no
E)SS RNA icoso yes
able to inject DNA #of T7 particles produced
A) yes 1000
B) yes 100
C) yes 1
D) yes 0
E) no 0
12. when adiposite triglycerides are mobilized,the non fatty acid domain of this molecule can be used by the liver for gluconeogenesis.which of the following enzymes initiates this process?
A)1,3 diglycerate kinase
B)fructose 1,6-bisphosphate
C)glucokinase
D)glyceraldehyde 3 phosphate dehydrogenase
E)glycerol kinase
F)hexokinase
15. A 55-year-old Native American woman who lives alone is brought to the emergency department after a minor fall in her home, which her mother witnessed. She tells her physician that her husband, who died 6 weeks ago, comes to visit her every night and gives her guidance. She also states that he complains of being lonely and is waiting for her to join him. She states that her appetite and energy are normal and denies suicidal ideation. Physical examination shows a bruised arm and leg. Neurologic examination and CT scan of the head show no abnormalities. Which of the following is the most appropriate next step for the physician?
A) Ask her relatives if speaking to deceased loved ones is common to their culture
B) Ask her relatives if there is a family history of major depressive disorder with psychotic symptoms
C) Ask her relatives if there is a family history of schizophrenia
D) Order an EEG to determine if the patient is sleep-deprived
E) Order an MRI of the head
17.A 69 year old woman is brought to the emergency department 1 hour after the sudden onset of crushing ,sub sternal chest pain and nausea.Physical examination shows pallor and diaphoresis .An ECG and an evaluation of serum cardiac enzymes confirm a diagnosis of MI of the anterior wall. activation of platelets and segmented neutrophils during thrombogenesis in the patient caused the release of cytokines ,including platelet derived growth factor.the mitogenic signal provided by this cytokine to smooth muscle cells at the sites of vascular injury in this patient is most likely to be inhibited by which of the following intracellular enzymes?
A)aminotranferase
B)glycosylhydrolase
C)kinase
D)lipase
E)peroxidase
F)phosphatase
19.A 55 year old woman is treated with 500mg of drug X three times daily for cancer pain .she is pain free but she develops nausea ,vomitings and diarrhea ,requiring cessation of drug X.drug y is started at 20 mg twice daily.She is pain free, her appetite improves ,and she gains weight.which of the following best describes the maximal efficacy of these drugs.
A)Drug X is more efficacious than drug Y
B)Drug Y is more efficacious than drug X
C)Drug X and Y are equally efficacious
45.A 2 year old boy developed the vesicular lesions shown 2 days ago. which of the following best describes the virus causing the lesions.
nucleic acid symmetry present
A)Ds RNA icosahedral yes
B)Ds RNA helical yes
C)Ds RNA icoso no
D)SS RNA icoso no
E)SS RNA icoso yes