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1. During a study of the components of regulatory proteins, an investigator will most likely find that zinc finger motifs facilitate which of the following functions?
A ) DNA binding
B ) Histone binding
C ) Membrane binding
D ) Serine/threonine kinase activity
E ) Tyrosine kinase activity
2. A 17-year-old boy is brought to the emergency department because of severe cramps in his calf muscles that began after he ran a 1-mile race. His urine is a burgundy color. Physical examination shows tender calf muscles. Laboratory studies show an increased serum creatine kinase activity and myoglobinuria. Following exercise of an ischemic left forearm, his serum lactic acid concentration does not increase in blood obtained from the vein proximal to the exercised extremity. This patient most likely has a deficiency of which of the following enzymes in muscle?
A ) Debranching enzyme
B ) Fructose-1,6-bisphosphatase
C ) Glucose-6-phosphatase
D ) Glycogen phosphorylase
E ) Glycogen synthase
3. A 23-year-old woman has skin blistering that results from a point mutation in a single gene. Epidermal cells in these patients become fragile and rupture. Which of the following is the most likely effect of the genetic mutation?
A ) Defective transport of vesicles from the centrosome to the cell membrane
B ) Disrupted assembly of keratin into intermediate filaments
C ) Lack of GTP required to form polymers of tubulin
D ) Phosphorylation of actin monomers to promote polymerization
4. Rapid efflux of newly secreted bile from canaliculi into the hepatic interstitium can be caused by structural disruption or functional alteration of which of the following components of normal interactions between hepatocytes?
A ) Adherens junctions (zonulae adherentes)
B ) Desmosomes (maculae adherentes)
C ) Gap junctions
D ) Hemidesmosomes
E ) Tight junctions (zonulae occludentes)
5. A couple seeks genetic counseling following the recent diagnosis of cystic fibrosis in their youngest child. Their two older children are healthy and have normal sweat chloride test results. Which of the following is the likelihood that each of the unaffected children is a carrier of cystic fibrosis?
A ) 1 in 2
B ) 1 in 3
C ) 1 in 4
D ) 2 in 3
E ) 3 in 4
6. The strategy for gene therapy summarized in the diagram is expected to be most useful for treating diseases caused by mutations in which of the following genes?
A ) Genes for cytoskeletal proteins
B ) Genes for essential enzymes
C ) Homeobox genes
D ) Oncogenes
7. A 75-year-old man has a painless mass in the left upper anterior neck. Examination of tissue obtained on biopsy shows partial replacement of a lymph node by a neoplasm; the neoplasm is composed of cohesive sheets of polygonal cells with granular eosinophilic cytoplasm, prominent intercellular bridges, and pleomorphic round nuclei. Immunocytochemical preparations show a strongly positive reaction of the neoplastic cells to a high-molecular-weight keratin antibody. There is no reaction to antibodies against vimentin and leukocyte common antigen (CD45). Which of the following is the most likely diagnosis?
A ) Adenocarcinoma
B ) Malignant melanoma
C ) Non-Hodgkin lymphoma
D ) Sarcoma
E ) Squamous cell carcinoma
8. A 27-year-old woman with alcohol dependence and major depressive disorder tells the physician that she has been repeatedly physically and emotionally abused by her current partner. Which of the following is the most appropriate initial response by the physician?
A ) "Battering only grows worse over time. For your safety and self-esteem, it is in your best interest to leave this relationship."
B ) "Do you feel it is safe for you to return home?"
C ) "Is there any way you can keep him from getting so angry?"
D ) "There may be a correlation between your history of alcoholism and the abuse. If you take some steps to stop your alcohol intake, the abuse may possibly subside."
E ) "Why do you think your partner abuses you?"
9. A 28-year-old man is brought to the emergency department after being lost in a remote wilderness area for 3 weeks. He consumed all of the food in his backpack 2 weeks ago and has had only wild berries and pond water since then. Intravenous feeding is begun. Blood samples obtained before intravenous feeding was begun show increased serum concentrations of ketone bodies and urea nitrogen (BUN); glucose concentration is within the reference range. Use of which of the following best explains the maintenance of a normal glucose concentration in this patient?
A ) Dietary protein
B ) Hepatic glycogen stores
C ) Skeletal muscle glycogen
D ) Skeletal muscle protein
E ) Urea nitrogen
10. Many aromatic hydrocarbons, such as benzopyrene found in cigarette smoke, are procarcinogens. They are converted to more reactive, DNA-damaging carcinogens by cellular metabolism. This metabolic activation to reactive carcinogens involves which of the following actions?
A ) Conjugation with glutathione by glutathione transferases
B ) Glucuronidation by glucuronosyl transferases
C ) Glycosylation by glycosyl transferases
D ) Oxidation by cytochrome P450
E ) Oxidation by mitochondrial cytochrome A
F ) Sulfation by sulfotransferases
11. An 82-year-old man develops mild shortness of breath 3 months after beginning therapy that includes bleomycin for a localized squamous cell tumor of the mouth. Which of the following pulmonary function test results are most likely to be observed in this patient?
FEV1/FVC Diffusing Capacity Total Lung Volume
A ) ↑ no change ↑
B ) No change ↓ ↑
C ) No change ↓ ↓
D ) ↓ ↑ ↓
E ) ↓ no change ↓
12. A 37-year-old nurse is accidentally injected with HIV-infected blood. After being counseled regarding the risks and benefits of receiving antiviral prophylaxis, she begins treatment with combination antiretroviral therapy, including zidovudine (AZT). Zidovudine is most appropriate for this patient because of which of the following mechanisms of action?
A ) Enhances host immune function
B ) Inhibits protein disulfide bond formation
C ) Limits viral capsid assembly
D ) Promotes hypermethylation of DNA
E ) Terminates viral DNA elongation
13. A previously healthy 42-year-old man has had postprandial epigastric pain over the past 2 weeks. In the past 24 hours he has passed 3 maroon-colored stools. Endoscopy shows a 2-cm diameter antral ulcer. Examination of the ulcer tissue obtained on biopsy shows the presence of Helicobacter pylori. This organism is able to survive in the stomach in part because it secretes which of the following substances?
A ) Bicarbonate
B ) Endotoxin
C ) Lysozyme
D ) Mucus
E ) Peptidoglycan
F ) Protease
G ) Urease
14. A previously healthy 37-year-old man is admitted to the hospital because of fever, chills, night sweats, and a 1.4-kg (3-lb) weight loss over the past 6 weeks. Physical examination shows a temperature of 38.5°C (101.3°F) and a tender, raised erythematous papule on the bridge of the nose. An x-ray of the chest shows consolidation of the right middle lobe. A PPD skin test is negative with positive controls. A bronchoscopy is performed, and KOH examination of a silver-stained specimen shows a large, round budding yeast with a broad base connecting the mother cell to the daughter cell. Which of the following is the most likely causal agent?
A ) Actinomyces israelii
B ) Blastomyces dermatitidis
C ) Candida albicans
D ) Coccidioides immitis
E ) Histoplasma capsulatum
F ) Microsporum canis
G ) Paracoccidioides brasiliensis
H ) Penicillium marneffei
I ) Pneumocystis jiroveci (formerly P. carinii)
J ) Trichophyton rubrum
15. A 45-year-old woman comes to the emergency department because of a 10-hour history of fever, chills, and abdominal pain that radiates to her right shoulder blade. She has a history of cholelithiasis. Her temperature is 39.6°C (103.3°F), pulse is 120/min, respirations are 24/min, and blood pressure is 90/60 mm Hg. Abdominal examination shows tenderness in the right upper quadrant with guarding. Bowel sounds are decreased. Which of the following cytokines is most likely to be primarily involved in this patient's condition?
A ) Interferon-γ
B ) Interleukin-4 (IL-4)
C ) IL-10
D ) Transforming growth factor-β
E ) Tumor necrosis factor-α
16. A 45-year-old woman has increased blood pressure, decreased urine output, and an increased serum creatinine concentration 9 weeks after renal allograft transplantation. Which of the following elements of the patient's immune system are most likely responsible for these clinical changes?
A ) B lymphocytes
B ) Basophils
C ) Natural killer cells
D ) Preformed antibodies
E ) T lymphocytes
17. A study is done to determine if raloxifene will decrease the incidence of vertebral fractures in postmenopausal women. The results are shown:
Raloxifene Placebo
Number of women in study group 2557 2576
Number of vertebral fractures 138 (5.4%) 260 (10.1%)
Based on these results, how many women need to be treated to prevent one vertebral fracture?
A ) 100/5.4 = 18.5
B ) 100/10.1 = 10
C ) 100/(10.1+5.4) = 6.5
D ) 100/(10.1–5.4) = 21
E ) 100/(10.1×5.4) = 2
18. A randomized, double-blind, controlled trial is conducted to assess the efficacy of a drug to prevent osteoporotic fractures in women older than 65 years. Sixty women are enrolled; 30 subjects receive the new drug (group X), and 30 subjects receive a placebo (group Y). Two years later, seven subjects from group X have had fractures, and 15 subjects from group Y have had fractures (p=0.06). The investigators conclude that there is not a significant difference between the treatments, and the new agent is not recommended. Which of the following raises the most concern about the validity of this conclusion?
A ) Inappropriate study population
B ) Low external validity
C ) Low power
D ) Use of blinding
E ) Use of a placebo
19. A 57-year-old woman with a ruptured appendix has septicemia and symptoms of septic shock. Blood cultures grow gram-negative rods. Which of the following cytokines is most likely to be responsible for the shock?
A ) Interferon-α
B ) Interferon-β
C ) Interferon-γ
D ) Interleukin-2 (IL-2)
E ) IL-4
F ) IL-7
G ) IL-10
H ) Transforming growth factor-β (TGF-β)
I ) Tumor necrosis factor-α (TNF-α)
20. A 24-year-old woman is admitted to the hospital because of a temperature of 40°C (104°F), generalized rash, and altered mental status. On admission, her platelet count, prothrombin time (PT), and activated partial thromboplastin time (aPTT) are within the reference ranges. During the next 24 hours, her blood and cerebrospinal fluid cultures grow Neisseria meningitidis. Despite therapy, she becomes comatose and begins bleeding from all venipuncture sites and from mucous membranes. Her PT and aPTT are now markedly prolonged, and platelet count is less than 20,000/mm3. Which of the following plasma values is most likely to be increased in this patient?
A ) Activated protein C
B ) D-dimer
C ) Factor VII (proconvertin)
D ) Fibrinogen
E ) Plasminogen
21. A 61-year-old man has had weakness of the left leg for 6 months. Examination shows increased muscle tone and reflexes in the left lower extremity, and an extensor plantar response on the left. Which of the following labeled sites on the spinal cord is most likely damaged?
A )
B )
C )
D )
E )
F )
G )
H )
I )
J )
22. A 51-year-old man undergoes an anterolateral cordotomy to relieve the pain of metastatic intra-abdominal cancer. This procedure is most likely to result in degeneration of spinothalamic tract axons that terminate in which of the following labeled structures in the MRI of the normal head?
A )
B )
C )
D )
E )
23. During an experimental study, a researcher isolates a neuromuscular preparation and stimulates the motor nerve in the presence of a small dose of tubocurarine to achieve a submaximal response. The resulting end-plate potential (EPP) is measured in both 0.9% saline (control) and in the presence of neostigmine (experimental). The EPP of the experimental group is increased in both amplitude and duration. Which of the following molecular targets is the most likely cause of this effect?
A ) Acetylcholinesterase
B ) Choline acetyltransferase
C ) Muscarinic acetylcholine receptor
D ) Nicotinic acetylcholine receptor
E ) Voltage-sensitive sodium channel
24. A 35-year-old woman comes to the physician because of intermittent tingling and numbness of her feet during the past 6 months. She has a 30-year history of type 1 diabetes mellitus. Sensation of joint position is decreased in the toes and ankles, and vibration sense is decreased in the feet. There are decreased ankle jerks bilaterally. Pathologic changes of which of the following most likely occurred in this patient?
A ) Dorsal columns of the spinal cord
B ) Large-diameter axons of the distal portions of peripheral nerves
C ) Motoneurons of the lumbosacral spinal cord
D ) Spinocerebellar tracts of the spinal cord
E ) Spinothalamic tract neurons of the dorsal horn
25. A 72-year-old woman comes to the physician because of a 6-month history of blurring of near and distance vision in the left eye and a small blind spot in the center of left-eye vision. Funduscopic findings are shown. Which of the following is the most likely diagnosis?
A ) Glaucoma
B ) Macular degeneration
C ) Optic atrophy
D ) Optic neuritis
E ) Retrobulbar neuritis
26. A 17-year-old girl develops torticollis and diffuse muscle rigidity 3 hours after starting a new drug for a psychiatric disorder. The most likely cause of these findings is the antagonism of which of the following receptors?
A ) α1-Adrenergic
B ) β2-Adrenergic
C ) Dopaminergic (D2)
D ) Muscarinic (M2)
E ) Serotoninergic 1A
F ) Serotoninergic 2
27. A 16-year-old boy has a 1-week history of a pruritic rash that has been spreading across his feet. He usually wears gym shoes but frequently walks outside without shoes. Physical examination shows erythema, a few tense vesicles and bullae with red bases, and mild scaling on the soles of the feet. The rash extends up the sides of the feet to the malleoli. A photomicrograph of scrapings from the blisters and scales is shown. The most appropriate therapy is topical application of which of the following?
A ) Betamethasone
B ) Diphenhydramine
C ) Metronidazole
D ) Miconazole
E ) Neomycin
F ) Pyrantel
28. A 40-year-old woman comes to the physician because of a 1-year history of chronic low back pain. Exercises to strengthen the abdominal muscles are recommended. Straight-leg raising consists of raising both lower extremities while lying flat on her back. Which of the following muscles is most directly involved in this exercise?
A ) Erector spinae
B ) Iliopsoas
C ) Latissimus dorsi
D ) Quadratus lumborum
E ) Vastus medialis
29. A 4-year-old boy has slow motor development. He has a waddling gait and hypertrophy of the calf muscles. He has difficulty getting up from the floor and needs to use his arms to support himself. Serum creatine kinase activity is markedly increased. Decreased concentrations of the muscle protein responsible for his condition are most likely to result in which of the following changes in muscle cell physiology?
A ) Adaption of muscle protein isoforms of the contractile apparatus
B ) Decreased length of individual muscle fibers
C ) Increased muscle bulk caused by muscle cell hypertrophy
D ) Presence of thread-like structures within muscle cells
E ) Replacement of muscle cells by connective tissue stromal cells
30. A 55-year-old man comes to the physician's office because of a second episode of acute severe pain in his right big toe. Examination shows an erythematous, swollen, and exquisitely tender right first metatarsophalangeal joint. Administration of which of the following drugs is the most appropriate initial therapy?
A ) Allopurinol
B ) Colchicine
C ) Methotrexate
D ) Probenecid
E ) Propoxyphene
F ) Tramadol
31. A 22-year-old woman is brought to the emergency department because of shortness of breath and wheezing for 6 hours. Her symptoms began shortly after visiting her friend who has cats. She has a history of similar symptoms after exposure to cats. On arrival, she speaks in short sentences. Her respirations are 32/min. Which of the following sets of results is most likely on pulmonary function testing?
FEV1: FVC Residual Volume
A ) ↑ ↑
B ) ↑ ↓
C ) ↓ ↑
D ) ↓ ↓
E ) Normal ↑
F ) Normal ↓
32. A 78-year-old man comes to the physician because of progressive swelling of the right side of his face and neck and his right upper extremity. His right jugular vein is engorged. Which of the following diagnoses is most likely to be confirmed on an x-ray of the chest?
A ) Aortic arch aneurysm
B ) Mass in the upper lobe of the right lung
C ) Right cervical rib
D ) Right pneumothorax
E ) Thoracic duct blockage in the posterior mediastinum
33. Which of the following structures in the schematic of fetal circulation eventually causes a continuous murmur if it fails to close after birth?
A )
B )
C )
D )
E )
34. The resistance of a precapillary arteriole is increased in a muscle vascular bed. Which of the following most likely occurs in response to this increase?
A ) Decreased capillary filtration rate
B ) Decreased interstitial oncotic pressure
C ) Increased capillary blood flow
D ) Increased capillary hydrostatic pressure
E ) Increased vascular conductance
36. A 55-year-old man with a 1-year history of recurrent ventricular tachycardia comes to the physician because of headache, dizziness, and ringing in his ears. He started taking an oral antiarrhythmic drug for his condition 3 months ago. Platelet count is 80,000/mm3. Which of the following drugs is most likely responsible for these adverse effects?
A ) Amiodarone
B ) Mexiletine
C ) Procainamide
D ) Quinidine
E ) Sotalol
35. A 67-year-old man with severe congestive heart failure and edema has gained 9.1 kg (20 lb). Which of the following is most likely to contribute to renal sodium retention?
A ) Decreased extracellular fluid volume
B ) Decreased plasma aldosterone concentration
C ) Increased effective arterial blood volume
D ) Increased plasma atrial natriuretic peptide concentration
E ) Increased renal sympathetic nerve activity
37. Five members of a family develop severe cramping abdominal pain, vomiting, and diarrhea within 24 to 48 hours after eating sushi. An oxidase-positive, gram-negative, curved rod is isolated from the stools of three of the five patients. Which of the following is the most likely causal organism?
A ) Escherichia coli K1
B ) Haemophilus influenzae type b
C ) Helicobacter pylori
D ) Neisseria meningitidis serogroup B
E ) Salmonella enteritidis
F ) Salmonella typhi
G ) Shigella sonnei
H ) Streptococcus pneumoniae
I ) Vibrio cholerae
J ) Vibrio parahaemolyticus
39. The graph shows gastric acid secretion response versus concentration of histamine administered before (solid curve) and after (dashed curve) the administration of Drug X. Drug X is most likely to be which of the following?
A ) Atropine
B ) Cimetidine
C ) Diphenhydramine
D ) Misoprostol
E ) Omeprazole
F ) Sucralfate
40. During an experiment, the following data were obtained from an anesthetized dog:
Mean glomerular capillary hydrostatic pressure (HPGC) 45 mm Hg
Mean Bowman space hydrostatic pressure (HPBS) 12 mm Hg
Mean glomerular capillary oncotic pressure (πGC) 23 mm Hg
Mean Bowman space oncotic pressure (πBS) 0 mm Hg
Coefficient of filtration (Kf) 3.0 (mL/min)/mm Hg
Renal blood flow 200 mL/min
Hematocrit 40%
Which of the following best represents the glomerular filtration rate (in mL/min) in this animal?
A ) 30
B ) 60
C ) 90
D ) 120
E ) 180
41. A previously healthy 62-year-old woman comes to the physician because of blood in her urine for the past week. A CT scan of the abdomen shows a 9-cm, solid cystic mass in the right kidney. A nephrectomy is done; a histologic section of the mass is shown. Which of the following is the most likely diagnosis?
A ) Angiomyolipoma
B ) Leiomyosarcoma
C ) Lymphoma
D ) Metastatic small cell carcinoma
E ) Renal cell carcinoma
F ) Transitional cell carcinoma
42. A 70-year-old man has an 18-month history of hypertension. His past health has been good and he takes no medications. Blood pressure is 165/110 mm Hg. There are bruits in the neck and left flank. Serum electrolyte concentrations are within the reference range, and serum creatinine concentration is 2.5 mg/dL. Urinalysis is negative for glucose, protein, cells, and casts. Which of the following best reflects the plasma renin-angiotensin-aldosterone profile in this patient?
Renin Angiotensin II Aldosterone
A ) ↓ ↓ ↓
B ) ↓ ↓ ↑
C ) ↓ ↑ ↑
D ) ↑ ↓ ↓
E ) ↑ ↑ ↓
F ) ↑ ↑ ↑
43. An 18-year-old woman, gravida 1, para 1, comes to the physician for a routine postpartum examination. She says that she often has milk leakage even when she is not ready to breast-feed her 6-week-old son. She reports that this symptom is particularly severe whenever he begins to cry. The physician reassures her that this is an entirely normal response. This reaction is most likely caused by psychogenic stimuli that promote secretion of which of the following mediators?
A ) Dopamine
B ) Luteinizing hormone
C ) Oxytocin
D ) Progesterone
E ) Prolactin
44. A 20-year-old woman who has had oligomenorrhea for 3 years has the sudden onset of heavy vaginal bleeding. She is moderately obese and has increased amounts of hair on the face, arms, and legs. Examination of an endometrial biopsy specimen shows hyperplasia without atypia. Laboratory studies show increased serum concentrations of luteinizing hormone, androgens, and estrogens; follicle-stimulating hormone concentration is decreased. Histologic examination of the ovaries is most likely to show which of the following?
A ) Mucinous cystadenomas
B ) Multiple persistent corpora lutea
C ) Multiple subcortical cysts lined by granulosa cells
D ) Normal histology
E ) Serous cystadenomas
44. A 20-year-old woman who has had oligomenorrhea for 3 years has the sudden onset of heavy vaginal bleeding. She is moderately obese and has increased amounts of hair on the face, arms, and legs. Examination of an endometrial biopsy specimen shows hyperplasia without atypia. Laboratory studies show increased serum concentrations of luteinizing hormone, androgens, and estrogens; follicle-stimulating hormone concentration is decreased. Histologic examination of the ovaries is most likely to show which of the following?
A ) Mucinous cystadenomas
B ) Multiple persistent corpora lutea
C ) Multiple subcortical cysts lined by granulosa cells
D ) Normal histology
E ) Serous cystadenomas
45. A male newborn delivered to a mother with type 1 diabetes mellitus at 30 weeks' gestation has profound hypoglycemia and is difficult to arouse. He requires a glucose infusion. An umbilical venous catheter is utilized as a central line for glucose administration with the tip directed for placement in the right atrium. In order to reach its destination, the catheter must pass through which of the following vessels?
A ) Azygos vein
B ) Ductus venosus
C ) Left hepatic artery
D ) Right portal vein
E ) Superior epigastric vein
46. A 60-year-old woman has a serum calcium concentration of 7.0 mg/dL and a serum potassium concentration of 2.8 mEq/L. Her serum parathyroid hormone (PTH) concentration is decreased. The decreased PTH is most likely related to a severe depletion of which of the following?
A ) Iodine
B ) Iron
C ) Magnesium
D ) Selenium
E ) Zinc
47. A 50-year-old man comes to the physician's office for a routine health maintenance examination. He had radiation therapy for treatment of a benign thymic enlargement when he was 8 days old. Which of the following aspects of the physical examination is most likely to identify a long-term complication of this therapy?
A ) Auscultation over the cardiac apex
B ) Auscultation over the cardiac base
C ) Auscultation over the trachea and upper airways
D ) Indirect laryngoscopy
E ) Inspection of the hypopharynx
F ) Nasopharyngoscopy
G ) Palpation of the thyroid gland
48. A 28-year-old woman with AIDS has chronic diarrhea of unknown origin. After the failure of typical treatment approaches, subcutaneous injections of octreotide are begun. Which of the following best describes the therapeutic benefit of this structure analogy of somatostatin as compared with native somatostatin?
A ) Decreased lipid solubility
B ) Decreased volume of distribution
C ) Delayed onset of action
D ) Increased bioavailability
E ) Prolonged duration of action
49. A 65-year-old man with chronic obstructive pulmonary disease has had a "dry mouth" since starting bronchodilator therapy 2 weeks ago. The symptom is not severe enough to discontinue the medication. Which of the following bronchodilators is the patient most likely taking?
A ) Albuterol
B ) Ipratropium
C ) Isoproterenol
D ) Terbutaline
E ) Theophylline
50. A 54-year-old man is brought to the emergency department because of a 2-week history of progressive shortness of breath with exertion and leg swelling. He now requires two pillows for sleeping because of shortness of breath when lying flat. He has had a 4.5-kg (10-lb) weight gain during this period. He has a 15-year history of type 2 diabetes mellitus and hypertension that are poorly controlled despite treatment with a variety of medications. Two months ago, he began receiving a new diabetic medication that has been titrated upward during the past month. Crackles are heard at the lung bases bilaterally. Cardiac examination shows an S3 gallop. There is 2+ peripheral edema of the lower extremities. Which of the following medications is the most likely cause of the new symptoms in this patient?
A ) Acarbose
B ) Glyburide
C ) Metformin
D ) Repaglinide
E ) Rosiglitazone
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saif
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i am posting the pics as well
this the image for qs 6
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saif
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image qs 21
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q23
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saif
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Forum Senior
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image 25
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q 27
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q33
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q39
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q41
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saif
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Forum Senior
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sorry to be rude like this guys. but i'm in the verge of life n death kind a thing. pls someone respond and correct my answers
PLZ PLZ PLZ
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saif
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all of these are not my asnwer. i did terrible int he exam. i looked here and there and then posted the asnwers and waiting for guys to correct me. PLZ PLZ PLZ i need answers immediately. plz guys help me out.
BLOCK 1
1. E
2.D
3.B
4.E
5.C
6.B
7.E
8.E
9.D
10.D
11.B
12.E
13.G
14.B
15.E
16.E
17.D
18.C
19.I
20.B
21.H
22.B
23.D
24.B
25.B
26.C
27.D
28.B
29.E
30.B
31.C
32.B
33.A
34.A
35.E
36.D
37.J
38.C
39.B
40.A
41.E
41.F
43.C
44.C
45.B
46.C
47.G
48.E
49.B
50.E
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