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. What DNA virus is associated with heterophile - negative mononucleosis?
QRS complex
Thyroarytenoid muscles
CMV; remember - EBV is associated with heterophile - positive mononucleosis.
Apoptosis (Remember - there is a lack of inflammatory response.)
2. Which trophoblast layer of the placenta remains until the end of pregnancy?
Klatskin tumor
Leptospira
Syncytiotrophoblast. (The cytotrophoblast gets incorporated into the syncytiotrophoblast.)
Outside the cell
3. What is the maximum rate possible with a given amount of enzyme?
Vmax
Stanford - Binet Scale - developed in 1905 - is useful in the very bright - the impaired - and children less than 6 years old.
Relaxation of the diaphragm increases the intrapleural pressure (becomes more positive).
Acute CO poisoning
4. What is the only way to increase the Vmax of a reaction?
Increase the concentration of enzymes
Berylliosis
Infliximab
Penicillamine - EDTA (calcium disodium edetate) - or dimercaprol
5. Has analgesic and antipyretic activities but lacks anti - inflammatory effects.
Biotin. Avidin is found in raw egg whites.
Acetaminophen
Penicillamine - EDTA (calcium disodium edetate) - or dimercaprol
Dimercaprol - D- penicillamine
6. What is the most common one? - Type of melanoma
The AR form is malignant and AD is benign.
Rationalization
Hemiazygous vein
Superficial spreading melanoma
7. What eukaryotic translation enzyme is associated with the following: x Initiation
CD28
Red pulp (Remember - Red pulp and RBCs begin with R.)
eIF-2 in the P site
Glutamate
8. What hormone - stimulated by epinephrine - results in an increase in lipolysis?
Leukemias and lymphomas
Hormone - sensitive lipase - Which breaks down triglyceride into glycerol and free fatty acid
Sulfonamides
Flea - bitten kidney (can also be seen in pyelonephritis)
9. What are the four signs of acute inflammation?
Unconjugated free bilirubin
Hypermyelination of the corpus striatum and the thalamus (seen in cerebral palsy)
Autoimmune hemolytic anemia
Rubor (red) - dolor (pain) - calor (heat) - tumor (swelling); also sometimes there is loss of function
10. What enzyme of the TCA cycle also acts as complex II of the ETC?
Demeclocycline
Stroke volume
Succinate dehydrogenase
Iodine - resulting in congenital hypothyroidism
11. What is the most common one? - Tumor in individuals exposed to asbestos
Berger disease (IgA nephropathy)
Bronchogenic carcinoma
Coxiella burnetii
Bacillus anthracis
12. What is the term for a substance secreted by a leukocyte in response to a stimulus?
Facial expression (the second is vocal intonation)
Cytokine. If a cytokine affects another class of leukocytes - it is called an interleukin.
Corticosteroid
CN V3 and the lesser petrosal nerve
13. What form of anxiety - appearing at 6 months - peaking at 8 months - and disappearing by 1 year of age - is seen in the presence of unfamiliar people?
In the medulla; all the other structures are cortical.
Stranger anxiety
Tropomyosin
Chromosome 15 - 17
14. Name the associated chromosome - Down syndrome
1. Burkitt's lymphoma 2. Nasopharyngeal carcinoma 3. Thymic carcinoma
Brucella and Listeria (has tumbling motility)
The aorta
Chromosome 21
15. What transports iron in the blood?
Fructose; both glucose and galactose are actively absorbed via secondary active transport.
Transferrin
Anopheles mosquito
IF
16. Name the three hormones produced by pinealocytes.
Melatonin - serotonin - and CCK
After the eclipse period
Pernicious anemia (secondary to a lack of vitamin B12 absorption)
Pia mater
17. Which prophylactic asthmatic agent is an antagonist of LTD4?
Homeodomain proteins
Zafirlukast
Estrogen
Proto - oncogenes
18. Are necessary for normal menstrual cycles.
Seven - eighths of nephrons are cortical - with the remainder juxtamedullary.
Yolk sac tumor
Thyroid hormones
Vitamin B6
19. What is the term for neurologic signs consistent with a cerebrovascular accident but lasting 24 hours with full recovery?
Galactose and glucose
CML and All
Transient ischemic attack
Acamprosate (the number of glutamate receptors increases with chronic alcohol abuse)
20. What is the term for an inhibitory interneuron?
Renshaw neuron
Increase enzyme concentrations
The carotid body - which monitors arterial blood directly
Metanephros
21. Name the T- cell CD marker: x Essential for Ab isotype switching (for B cell binding)
Adrenarche
Left colic - superior rectal - and sigmoidal arteries
CD40 ligand
Macula densa
22. What condition results in the following CSF results? - Opening pressure 70 to 180 mm H2O; 0-10 WBCs (monocytes); glucose 45 to 85 - protein 15 to 45
NAVEL: Femoral Nerve - Artery - Vein - Empty space - and Lymphatics/Lacunar ligament
Normal values
Nonsense
S1 nuclease
23. What thalamic relay nucleus do the mammillary bodies project to?
Escherichia coli
SHIP: Shifting of the aorta - Hypertrophy of the right ventricle - Interventricular septal defect - Pulmonary stenosis
The anterior nucleus of the thalamus
Dorsal motor nucleus of CN X
24. What are the longest - acting and shortest - acting benzodiazepines?
Plasma concentration and excretion rate
Intussusception
Superior and middle
Diazepam is longest acting and midazolam is shortest acting.
25. What is the term for white retinal spots surrounded by hemorrhage? In what condition are they seen?
Bridging veins draining into the sagittal sinus
Acetaldehyde dehydrogenase
Cushing's ulcers
Roth spots - and they are seen in bacterial endocarditis.
26. What disorder is described as having x Unconscious symptoms with unconscious motivation?
The folding of an AA chain
Splitting of the first heart sound occurs during inspiration because of the increased output of the right ventricle - delaying the closure of the pulmonic valve.
Roth spots - and they are seen in bacterial endocarditis.
Somatoform disorder
27. Which major cell type is found in the red pulp of the spleen?
RBCs. That is why it is called red pulp.
Caseous necrosis
Stanford - Binet Scale - developed in 1905 - is useful in the very bright - the impaired - and children less than 6 years old.
The carotid sinus reflex
28. Name the type of necrosis - Seen as dead tissue with liquefactive necrosis?
CN IX and X
Arterial PCO2 levels are proportional to cerebral blood flow.
H 1
Liquefaction necrosis
29. What is the term for normal cellular genes associated with growth and differentiation?
Bronchial asthma (whorled mucous plugs)
Duodenal atresia
Proto - oncogenes
GABA and glutamic acid
30. What embryonic structure forms the following adult structures? - Nephrons - kidney
Acute CO poisoning
From the wall of the yolk sac
Metanephros
Nodular melanoma
31. What is the primary target for the action of glucagon?
Renal plasma flow (decrease flow - increase FF)
Liver (hepatocytes)
No. Prions are infectious proteins - so antibiotics are useless.
Aedes mosquito
32. What is the most common opportunistic infection of the CNS in HIV?
Megaloblastic anemia (decreased absorption of vitamin B12 and folic acid)
Toxoplasmosis
1. CNS 2. Renal tubules 3. Beta Islet cells of the pancreas 4. RBCs 5. GI mucosa
JC virus
33. What AA undergoes N- glycosylation?
The granule cell is the only excitatory neuron in the cerebellar cortex - and it uses glutamate as its neurotransmitter. All the other cells in the cerebellum are inhibitory neurons - and they use GABA as their neurotransmitter.
Week four - and they remain dormant there until puberty.
Uroporphyrinogen I synthetase
Asparagine
34. What aneurysm of the circle of Willis is associated with polycystic kidney disease?
Increased secretion of GH postpuberty leading to acromegaly.
Berry aneurysm
Common peroneal nerve
Primary hypothyroidism (Low T4 has a decreased negative feedback loop - resulting in both the hypothalamus and the anterior pituitary gland to increase TRH and TSH release - respectively.)
35. What vasculitis is characterized by systemic vasculitis in small to medium - size vessels (except the lung); affecting young males; 30% HBsAg - positive; P- ANCA and autoantibodies against myeloperoxidase?
Knee
Previous suicide attempt
Polyarteritis nodosa
1. Dilation of the afferent arteriole 2. Constriction of the efferent arteriole 3. Inhibition of reabsorption of sodium and water in the collecting ducts
36. If you order a V/Q scan for suspected pulmonary emboli - is the filling defect seen on the ventilation or perfusion side?
Polysome. Ribosomes read from the 5' to the 3' end of the mRNA.
Ventilation of an unperfused lung segment is highly suspicious for pulmonary embolism.
Ethyl alcohol
0.21; it is a fancy way of saying 21% of the air is O2.
37. What operant conditioning therapy or modification is described as x Removing a reinforcement (without the patient knowing) gradually over time to stop a condition?
Fading
Minimal change disease
Cytochrome a/a3
Tyrosine
38. What antiviral agent is used in the treatment of drug - induced Parkinson's disease?
The JG cells
Amantadine
CD14
Metronidazole
39. What is the FiO2 of room air?
Ligament teres
Validity (remember - reliability is necessary but not the only thing needed for validity)
0.21; it is a fancy way of saying 21% of the air is O2.
Axon hillock
40. What receptor is in the smooth muscle cells of the small bronchi - is stimulated during inflation - and inhibits inspiration?
Metastatic
Palms and soles of the feet. Sebaceous glands are associated with hair follicles - which are lacking on the palms and soles of the feet.
Stretch receptors prevent overdistension of the lungs during inspiration.
X- linked dominant
41. To What is the diffusion rate indirectly proportional?
Anxiety disorders; for men it is substance abuse.
17- alpha - Hydroxylase deficiency
Diffusion rate is indirectly proportional to membrane thickness and is directly proportional to membranes surface area.
impermeable to water
42. What bone disorder is characterized by brown tumors - bone pain - deformities - and fractures due to excessive PTH?
Sciatic nerve
Autosomal recessive
The central vein of the liver lobule
Osteitis fibrosa cystica (von Recklinghausen disease)
43. What cells of the epidermis carry the pigment melanin?
Frontal lobe
Keratinocytes - the most numerous cells in the epidermis - carry melanin and produce keratin.
Arginine
TSH. 5- HT and prolactin increase during sleep - and dopamine levels decrease during sleep.
44. What glycoprotein allows platelets to adhere to each other through the use of fibrinogen?
GP IIb/IIIa - Which is why GP IIb/IIIa inhibitors are used in the treatment of acute coronary syndromes
Sigmoid colon
HBsAg (incubation period)
Hematogenous
45. What nerve is associated with the following functions? - Supinate the wrist - extend the wrist and digits - extend the shoulder and elbow
Radial nerve
Parental assignment and culture (not biology)
Primary polydipsia; patients with diabetes insipidus will continue to produce large volumes of dilute urine.
Chromosome 5q21
46. Name the type of regeneration (i.e. - labile - stable - or permanent) based on the following examples - Smooth muscle
Progressive multifocal leukoencephalopathy
Stable
emancipates
Thyroid hormones are necessary for conversion of carotene to vitamin A.
47. Which acid - fast rod is an obligate intracellular parasite?
Mycobacterium leprae
Metabolic rate and alveolar ventilation (main factor)
Healing by secondary intention
Osteosarcoma
48. How does myelination affect conduction velocity of an action potential?
The greater the myelination - the greater the conduction velocity.
Leydig cells produce testosterone. LH stimulates Leydig cells. (Both start with L.)
Glyceraldehyde dehydrogenase
Parainfluenza virus
49. What is the most common one? - Location of a gastric ulcer
Job syndrome
Umbilical vein and ductus venosus (80%)
Lesser curvature of the antrum of the stomach
1. Lowers surface tension - so it decreases recoil and increases compliance 2. Reduces capillary filtration 3. Promotes stability in small alveoli by lowering surface tension
50. Name the aphasia based on these characteristics: x Nonfluent speech - telegraphic and ungrammatical; lesion in Brodmann's area 44; unimpaired comprehension
Warning
: Invalid argument supplied for foreach() in
/var/www/html/basicversity.com/show_quiz.php
on line
183
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