SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
Test your basic knowledge |
USMLE Step 1 Prep
Start Test
Study First
Subjects
:
health-sciences
,
usmle-step-1
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. How many pairs of spinal nerves exit from the spinal cord?
Glycerol kinase
31 pairs
Anterior nuclear group (Papez circuit of the limbic system)
Uracil
2. What is the leading cause of primary hyperparathyroidism?
Truncus arteriosus
A patent processus vaginalis
Chief cell adenoma (80%)
Crude mortality rate
3. With What three enzymes is thiamin pyrophosphate (TPP) associated?
Hypermyelination of the corpus striatum and the thalamus (seen in cerebral palsy)
Chromophobe adenoma
1. a - Ketoglutarate dehydrogenase 2. Pyruvate dehydrogenase 3. Transketolase Thiamine pyrophosphate (TPP) functions as a coenzyme vital to tissue respiration. It is required for the oxidative decarboxylation of pyruvate to form acetyl - coenzyme A -
Limbic system
4. What is the amount in liters and percent body weight for the following compartments? - Vascular fluid
The fasciculus cuneatus
Hypervariable region
4.7 L - 5% of body weight
Rhabdomyoma
5. What primary acid - base disturbance is cause by a decrease in alveolar ventilation (increasing CO2 levels) resulting in the reaction shifting to the right and increasing H+ and HCO3- levels?
Diffuse proliferative GN
CD3
Respiratory acidosis (summary: high CO2 - high H+ - slightly high HCO3-)
Angiosarcoma of the liver
6. What bacterium is responsible for woolsorter's disease?
Glucocerebrosidase
Small cell cancer of the lung
Varicella
Bacillus anthracis
7. Name the cancer associated with the following chemical agents. (Some may have more than one answer.) x Vinyl chloride
Eclipse period
Posterior compartment of the leg - tibial nerve
Nystagmus and ataxia
Angiosarcoma of the liver
8. What virus is associated with Guarnieri bodies?
Variola virus (Smallpox)
Addition (They are mutually exclusive.)
Smoking
Cystadenocarcinoma
9. Name the type of regeneration (i.e. - labile - stable - or permanent) based on the following examples - Skeletal muscle
Permanent
Menses
Polyarteritis nodosa
IgG4
10. What substrate is built up in Niemann - Pick disease?
Vmax
Sphingomyelin
NREM sleep. Remember awake body - sleeping brain
42 L - 67% of body weight
11. What is the statistical term for the proportion of truly nondiseased persons in the screened population who are identified as nondiseased?
Specificity (it deals with the healthy)
One day after the LH surge and 2 days after the estrogen peak.
In the RBC; remember - you need carbonic anhydrase for the conversion - and plasma does not have this enzyme.
Primary sclerosing cholangitis
12. What are known as jumping genes?
Acral - lentiginous melanoma
Posterior compartment of the thigh - tibial nerve
Ligament of Treitz
Transposons
13. What subset of adenocarcinoma arises from the terminal bronchioles and/or alveolar walls?
Hepatoma and nonseminomatous testicular germ cell tumors
Bronchioloalveolar carcinoma
1. Skin 2. Liver 3. Kidney
Trisomy 12 (nearly 50% of patients with CLL have abnormal karyotypes.)
14. What regulates the rate of ketone body formation?
The rate of Beta- oxidation
Cysticerci
Vibrio cholera
CN XI and X
15. What structure of the knee is described thus? - Prevents anterior displacement and has lateral - to - medial attachment on the tibia
ACL
IL-4 - IL-10 - and IL-13
No CHO - AA - ketones - or peptides are left in the tubular lumen.
Epstein - cardiac anomaly of the tricuspid valve
16. At what stage of cognitive development (according to Piaget) do children x Have abstract thinking?
Formal operations (> 12 years)
epithelial lining
ACE inhibitors (the - pril agents)
CSF H+ levels - with acidosis being the main central drive - resulting in hyperventilation (the opposite being true with alkalosis)
17. What type of hepatitis has the highest mortality rate among pregnant women?
Hepatitis E
Spleen
C5a
Squamous cell carcinoma
18. Name the antidote - AChE inhibitors
cDNA - when it is made from mRNA
Physostigmine
Lipoprotein lipase
Atropine with pralidoxime
19. What is the period between falling asleep and REM sleep called?
No. It is abnormal only if it interferes with normal sexual or occupational function.
Bacillus cereus
Duodenum
REM latency; normally it is about 90 minutes.
20. What AA is classified as basic even though its pK is 6.5 to 7?
Histidine - because of the imidazole ring found in the R group - is basic.
When it crosses the teres major
1. Tight junctions 2. Capillaries that lack fenestration 3. Very selective pinocytosis by the capillaries
Escherichia coli
21. What vitamin deficiency produces homocystinuria and methylmalonic aciduria?
Inversely proportional: the higher the potency - the lower the anticholinergic side effects.
Cyanocobalamin (B12) deficiency (Folic acid deficiency has only homocystinuria as a sign.)
Brief psychotic disorder. (In schizophreniform disorder the symptoms last longer than 6 months.)
Area 4
22. What enzyme catalyzes the rate - limiting step in pyrimidine synthesis?
Aspartate transcarbamylase
CMV; Toxoplasma also causes intracerebral calcifications but it is a parasite.
HGPRT
env structural protein
23. Is most of the coronary artery blood flow during systole or diastole?
Diastole. During systole the left ventricle contracts - resulting in intramyocardial vessel compression and therefore very little blood flow in the coronary circulation.
Chromaffin cells (adrenal medulla)
Lisch nodules
Meningomyelocele All except occulta cause elevated - fetoprotein levels.
24. What autoimmune disorder is due to Abs directed to ACh receptors at the NMJ?
Fovea
Myasthenia gravis
Hydralazine
Chemotaxis
25. Name the associated chromosomal translocation - Follicular lymphoma
Celiac - aorticorenal - and superior mesenteric ganglias. (Remember all ' Splanchnics' are Sympathetic except for the Pelvic splanchnics - which are Preganglionic Parasympathetic fibers.)
Molybdenum (Mb)
Chloramphenicol
Chromosome 14 - 18
26. What type of Plasmodium affects x RBCs of all ages?
Neuroblastoma
Plasmodium falciparum
Superego
Capillary flow and pressure increase with arteriolar dilation and decrease with arteriolar constriction.
27. What endocrine abnormality is characterized by the following changes in PTH - Ca2+ - and inorganic phosphate (Pi)? - PTH decreased - Ca2+ decreased - Pi increased
Necator americanus is treated with mebendazole and iron therapy.
Primary hypoparathyroidism
RSV
Increases Remember - the carotid sinus reflex attempts to compensate by increasing both TPR and heart rate. -------------------------------------------------------------------------------
28. What syndrome is seen in iron - deficient middle - aged women with esophageal webs?
Sj
Histidine
Plummer - Vinson syndrome
Labioscrotal swelling
29. What happens to the following during skeletal muscle contraction? - Actin and myosin lengths
No change in length
14 L - 33% of body weight
Escherichia coli and Pseudomonas sp.
Prader - Willi syndrome and Angelman syndrome - respectively
30. Name the end product or products: x Fatty acid oxidation
greater
Tetralogy of Fallot
Acetyl CoA and propionyl CoA (in odd chain fatty acids)
Major
31. What subtype of IgG does not bind to staphylococcal A protein?
Seminoma
Magnesium
IgG3
Ticlopidine or clopidogrel
32. What wave is the cause of the following venous pulse deflections? - The bulging of the tricuspid valve into the right atrium
Iron deficiency anemia
C wave
Middle cerebral artery
Amiloride
33. Regarding neuroleptics - What is the relationship between potency and anticholinergic side effects?
Left CN XII lesion would result in the tongue pointing to the left (points at the affected side).
Positive sense RNA means it can serve as mRNA and therefore has 5'-3' polarity
Inversely proportional: the higher the potency - the lower the anticholinergic side effects.
Tetracyclines
34. Where are the tonsillar tissues?
Warning
: Invalid argument supplied for foreach() in
/var/www/html/basicversity.com/show_quiz.php
on line
183
35. Name the type of graft described by these transplants: x From one site to another on the same person
Nitroprusside
Homocysteine methyl transferase and methylmalonyl CoA transferase
Autograft
Mitosis
36. What blotting technique uses the following for analysis? - RNA
PGE 1 - PGI 2 (most potent) - and TXA 2
TLC - FRC - and RV have to be calculated. (Remember - any volume that has RV as a component has be calculated.)
Reaction formation
Northern blot
37. What congenital small bowel outpouching is a remnant of the vitelline duct?
Mannitol
Meckel diverticulum
Senile plaques - neurofibrillary tangles - and granulovascular changes in neurons
Lysine and arginine
38. Name the DNA virus x Linear dsDNA; nuclear envelope; icosahedral; replicates in the nucleus
Lateral rectus (CN VI) (LR6 SO4)3
Herpes virus
GM2 ganglioside Caused by a deficiency of Beta- hexosaminidase A
Transient hypogammaglobinemia of infancy; it usually resolves by age 16 to 30 months.
39. What form of arthritis is associated with calcium pyrophosphate crystals?
Pott disease
The enzyme lysyl oxidase requires Cu2+and O2 to function properly.
Pseudogout
Diabetes mellitus
40. Inhibits glucose uptake in skeletal muscle.
Subatmospheric pressure acts to expand the lung; positive pressure acts to collapse the lung.
Brain - spleen - and kidney
Ampulla
Cortisol
41. What are the three sites where CSF can leave the ventricles and enter the subarachnoid space? (Name the lateral and the medial foramina.)
The pulmonary vein - which carries oxygenated blood from the lung to the left atrium.
Two Lateral foramina of Luschka and 1 Medial foramen of Monroe (L for Lateral and M for Medial)
Semicircular duct
All
42. What are the four most common causes of femoral head necrosis?
The cat
These are the gross pathologic changes associated with Alzheimer's disease.
Interval scale (a ruler - for example)
1. Steroids 2. Alcohol 3. Scuba diving 4. Sickle cell anemia
43. What is the major ketone body produced during alcoholic ketoacidosis?
Mitral stenosis
Beta- Hydroxybutyrate
Proencephalon diencephalon derivative
Y - W-135 - and C and A capsular polysaccharides
44. What Ig is associated with mucosal surfaces and external secretions?
Major
100% - with about 20% remaining positive after 1 year
Indirect pathway (Tourette syndrome for example)
IgA
45. What leukemia affects a 4-year - old child with 3 months of fever - fatigue - generalized lymphadenopathy - CNS involvement - hepatosplenomegaly - bleeding - and platelet count below 100 - 000?
Chemotaxis
de Quervain thyroiditis
ll
Intussusception
46. What bursa is inflamed in clergyman's knee?
Infrapatellar bursa
Opening of the mitral valve indicates the termination of the isovolumetric relaxation phase and the beginning of the ventricular filling phase.
Sarcoidosis
Clindamycin
47. What part of the heart forms x The right border?
Gardnerella vaginalis
T cells - not B cells
IF and GTP (eIF for eukaryotes)
Right atrium
48. What enzyme catalyzes the rate - limiting step of the urea cycle?
Diazepam is longest acting and midazolam is shortest acting.
Carbamoyl phosphate synthetase I
Burkitt lymphoma
Proencephalon diencephalon derivative
49. What agent used in the treatment of BPH and baldness is a 5- a - reductase inhibitor?
Legionella
Sensory
Finasteride
Middle meningeal artery
50. Is GH considered a gluconeogenic hormone?
Circumvallate papillae
Yes - it decreases fat and muscle uptake of glucose - thereby increasing blood glucose levels.
DNA ligase
Paneth cells
Sorry!:) No result found.
Can you answer 50 questions in 15 minutes?
Let me suggest you:
Browse all subjects
Browse all tests
Most popular tests
Major Subjects
Tests & Exams
AP
CLEP
DSST
GRE
SAT
GMAT
Certifications
CISSP go to https://www.isc2.org/
PMP
ITIL
RHCE
MCTS
More...
IT Skills
Android Programming
Data Modeling
Objective C Programming
Basic Python Programming
Adobe Illustrator
More...
Business Skills
Advertising Techniques
Business Accounting Basics
Business Strategy
Human Resource Management
Marketing Basics
More...
Soft Skills
Body Language
People Skills
Public Speaking
Persuasion
Job Hunting And Resumes
More...
Vocabulary
GRE Vocab
SAT Vocab
TOEFL Essential Vocab
Basic English Words For All
Global Words You Should Know
Business English
More...
Languages
AP German Vocab
AP Latin Vocab
SAT Subject Test: French
Italian Survival
Norwegian Survival
More...
Engineering
Audio Engineering
Computer Science Engineering
Aerospace Engineering
Chemical Engineering
Structural Engineering
More...
Health Sciences
Basic Nursing Skills
Health Science Language Fundamentals
Veterinary Technology Medical Language
Cardiology
Clinical Surgery
More...
English
Grammar Fundamentals
Literary And Rhetorical Vocab
Elements Of Style Vocab
Introduction To English Major
Complete Advanced Sentences
Literature
Homonyms
More...
Math
Algebra Formulas
Basic Arithmetic: Measurements
Metric Conversions
Geometric Properties
Important Math Facts
Number Sense Vocab
Business Math
More...
Other Major Subjects
Science
Economics
History
Law
Performing-arts
Cooking
Logic & Reasoning
Trivia
Browse all subjects
Browse all tests
Most popular tests