Test your basic knowledge |

USMLE Step 1 Prep

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 base pairs upstream is the prokaryotic TATA box promoter?
H 2
Red blood cell distribution width index (RDW)
The small subunit (40S) binds first.
There are two bacterial promoter regions upstream. The TATA box is - 10 base pairs upstream - and the -35 promoter site is self - explanatory.

2. Name the most common type - Learning disability
Dyslexia
Gubernaculum
Axis IV
INF- gamma

3. What is the only sphingolipid that contains choline and PO4?
1. Increased amino acid uptake by muscles 2. Decreased protein breakdown 3. Increased protein synthesis
HBcAb and HBeAb. You see the antibodies c and e.
Sphingomyelin (lecithin also - but it is not a sphingolipid)
95% in the kidneys; that's why adequate Na+ and fluid intake is essential.

4. Are contraindicated in patients with SCID.
IL-4 - IL-10 - and IL-13
Saltatory conduction
Ratio scale
Live vaccines

5. What is the most common one? - Vasculitis
Cerebellum
Temporal arteritis
Cytochrome a/a3
LARP: Left goes Anterior and Right goes Posterior (because of the rotation of the gut; remember your embryology!)

6. What condition results in the following CSF results? - Opening pressure 450 mm H2O; 5 WBCs (90% lymphocytes); normal glucose and protein levels
Follicular phase is estrogen - dependent with increased FSH levels - while the luteal phase is progesterone - dependent.
Rheumatic fever
Brain abscess
CN I - II - III - VI - and XII Add 1 + 1 = 2 - 1 + 2 = 3 - 1 + 2 + 3 = 6 - 1 + 2 + 3 + 6 = 12

7. Is heparin contraindicated in pregnancy?
Extracellular
No. Heparin is safe in pregnancy - but warfarin is contraindicated in pregnancy because of its ability to cross the placenta.
Epinephrine
The internal laryngeal nerve supplies sensory information from above the vocal cords while the recurrent laryngeal nerve supplies sensory information below.

8. What gram - positive spore - forming anaerobic rod blocks the release of ACh at the NMJ - resulting in reversible flaccid paralysis?
Clostridium botulinum
Heart disease
Hydroxyproline
Trimethoprim/sulfamethoxazole (TMP- SMX)

9. Name the most common type or cause - Diarrhea in children
Mitochondria
Solved as 30% T + 30% A = 60%; therefore - C + G = 40%; then C = 20% and G = 20% (example of Chargaff's rule)
Dilation of the internal mammary arteries results in erosions on the inner surface of the ribs and is seen as notching.
Rotavirus

10. Where is most of the airway resistance in the respiratory system?
Flumazenil
In the first and second bronchi
1. Bunyavirus 2. Orthomyxovirus 3. Arenavirus 4. Reovirus Remember BOAR
Duodenum

11. What bedside test is used to differentiate a dorsal column lesion from a lesion in the vermis of the cerebral cortex?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

12. What is the effect of T3 on heart rate and cardiac output?
greater
T3 increases both heart rate and cardiac output by increasing the number of Beta - receptors and their sensitivity to catecholamines.
Arginine
Lower extremity and lower trunk information travels in the dorsal spinocerebellar tract. The upper trunk and extremity information travels in the cuneocerebellar tract. (Cuneocerebellar and fasciculus cuneatus both apply to upper extremities.)

13. Name the insulin preparation based on the peak effect and duration of action - Peak - 8 to 16 hours; duration - 24 to 36 hours
Squamous cell carcinoma
Testicular lymphoma
Alternative hypothesis (What is left after the null has been defined)
Ultralente

14. What is the term for a reversible change in one cell type to another?
Confidence interval. It is a way of admitting estimation for the population.
Vanillylmandelic acid (VMA)
Metaplasia (usually to a more protective cell type)
Necrophilia

15. What seronegative spondyloarthropathy is seen in HLA- B27- positive young females and presents with the triad of conjunctivitis - urethritis - and arthritis affecting the knees and ankles?
Reiter syndrome
After the latent period
SLE; ANA - anti - dsDNA and anti - Sm (anti - Smith)
Hematoxylin

16. Name the lipoprotein based on the following characteristics - apo B-100
TCR
Hematogenous
LDL
Thymus gland. (Thymus gland is essential for T cell maturation.)

17. What condition is defined by both testicular and ovarian tissues in one individual?
p -53
Hypersegmented neutrophils
True hermaphrodism
Stibogluconate

18. What hormones - secreted in proportion to the size of the placenta - are an index of fetal well - being?
Escherichia coli
No change in length
50% - with 50% of them having the child
hCS and serum estriol - which are produced by the fetal liver and placenta - respectively - are used as estimates of fetal well - being.

19. What is the vector for yellow fever?
After the latent period
Aedes mosquito
1. Liver 2. Muscle 3. Adipose tissue
Lower lobe

20. What type of mortality rate is defined as the number of deaths x From a specific cause per population?
IGF-1 (somatomedin C)
The aorta has the greatest velocity and the capillaries have the slowest velocity.
Cause - specific mortality rate
6 weeks 10 weeks

21. What type of fiber or fibers are carried in (answer motor - sensory - or both) x Ventral rami?
Purulent exudates
Both
Finasteride
Anterior wall of the first part of the duodenum

22. What type of hepatitis has the highest mortality rate among pregnant women?
Glutamine and aspartate
Hepatitis E
Chromosome 21
Nodular melanoma

23. What a2- antagonist is used to treat impotence and postural hypotension?
Yohimbine
Barr bodies in females - T- cell receptor loci - and immunoglobulin light and heavy chain loci
Gilbert's syndrome
Duodenum

24. What phase of Interphase is haploid (N)?
Primary Hemochromatosis
G1 phase; G2 and S phase are diploid (2N).
Opsonization
Barbiturate overdose and benzodiazepine withdrawal carry the highest mortality rates.

25. What type of potential is characterized as graded - decremental - and exhibiting summation?
Oxazepam - temazepam - and lorazepam ( OTL - Outside The Liver)
Phase 1
unprocessed Ags
Subthreshold potential

26. Protein production - bile secretion - detoxification - conjugation - and lipid storage.
Functions of hepatocytes
M 2
Excretion is greater than filtration for net secretion to occur.
Histiocytes

27. How many months in How many years must a person cough with copious sputum production for the diagnosis of chronic bronchitis to be made?
Proteus
Crude mortality rate
The central vein of the liver lobule
3 months of symptoms in 2 consecutive years

28. What are the two opsonizing factors?
The Fc region of IgG and C3b
Down syndrome
Euchromatin - the dark stuff in the nucleus on an electron microscope image.
Left atrium

29. What thyroid carcinoma secretes calcitonin and arises from the parafollicular C cells?
Medullary carcinoma of the thyroid
ACh
Liver
Familial polyposis coli

30. What is the most common one? - Type of hernia seen in males more than 50 years old
P = .05; P < .05 rejects the null hypothesis
Thiazide diuretics
Type 2
Direct; in males less than 50 years old indirect hernias are the most common type.

31. Name the hepatitis virus based on the following information - Small circular RNA virus with defective envelope
Hepatitis D
Pyridoxine (B6) deficiency
Euchromatin - the dark stuff in the nucleus on an electron microscope image.
Hepatitis E

32. Name the type of exudate - given the following examples - Diphtheria infection
2 and 5HT3 receptors
Pseudomembranous exudates
Filtered and secreted: Cx > Cin (i.e. - PAH). Filtered and reabsorbed: Cx < Cin (i.e. - glucose) - where Cx = clearance of a substance and Cin = clearance of inulin.
1. VSD 2. ASD 3. PDA

33. What type of Plasmodium affects x Only mature RBCs?
Plasmodium malariae
Stanford - Binet Scale - developed in 1905 - is useful in the very bright - the impaired - and children less than 6 years old.
Nitrates
Right and left pulmonary arteries and the ductus arteriosus

34. 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
Isoleucine - threonine - tryptophan - tyrosine - and phenylalanine
Because it is the largest vessel and has the highest velocity in systemic circulation
Normal values
Eosin

35. From what pharyngeal pouch is the following structure derived? - Inferior parathyroid gland and thymus
IgA nephropathy
The outer cortex contains most of the germinal centers and therefore also most B cells.
Decreases Remember - the carotid sinus reflex attempts to compensate by increasing both TPR and heart rate.
Third M PITS for pharyngeal pouch derivatives

36. Can advance directives be oral?
Megaloblastic anemia (decreased absorption of vitamin B12 and folic acid)
Neomycin
Yes
Lysosomal a -1 - 4- glucosidase

37. What enzyme of the TCA cycle also acts as complex II of the ETC?
Tyrosine
Middle meningeal artery
Mumps
Succinate dehydrogenase

38. What CNs are responsible for the sensor and motor components of the light reflex?
Secondary hypoparathyroidism (vitamin D toxicity)
CN II is the sensory limb and CN III is the motor component through parasympathetic stimulation.
Parasites
Misoprostol

39. Name the cancer associated with the following chemical agents. (Some may have more than one answer.) x Chromium and nickel
Megaloblastic anemia (decreased absorption of vitamin B12 and folic acid)
Arginine
Bronchogenic carcinoma
EF- Tu and EF- Ts of the 30S ribosomal subunit

40. What excitatory fibers arise from the inferior olivary nuclei on the contralateral side of the body?
Choriocarcinoma
Climbing fibers; - they are monosynaptic input on Purkinje cells. Mossy fibers - also excitatory - are axons of all other sources and synapse on granule cells.
Axis IV
50% - with 50% of them having the child

41. Is the carotid sinus sensitive to pressure or oxygen?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

42. A patient goes to the ER with signs and symptoms of biliary colic. Which opioid analgesic do you choose?
1. Benefits of the procedure 2. Purpose of the procedure 3. Risks of the procedure 4. The nature of the procedure (what you are doing) 5. The alternative to this procedure and its availability (Don't forget the last one; this is where physicians get
Obesity - DM - HTN - multiparity - early menarche - and late menopause
Spasms of the uterus - bladder - and the biliary tree occur with all of the opioids except meperidine.
Proencephalon

43. What is the most common one? - Cardiac anomaly in children
This is the triad of renal cell carcinoma
Site 4
NADPH and molecular O 2
PDA

44. What pathway of the coagulation cascade is activated when it is in contact with foreign surfaces?
Myasthenia gravis
Nucleus ambiguus - resulting in the uvula deviating away from the side of the lesion.
The rate of infusion
Intrinsic. The extrinsic pathway is activated by the release of tissue factors.

45. What enzyme is blocked by methotrexate/ trimethoprim?
HPV serotypes 6 and 11
Capillaries
Dihydrofolate reductase
Luteal phase

46. What is the term for a large VSD that leads to pulmonary HTN - RVH - and cyanosis due to right - to - left reversal of the shunt?
Chromosome 14 - 18
overall dopamine activity
Inhibited orgasm
Eisenmenger syndrome - which can also occur with any left - to - right shunt

47. Name the compartment of the lower extremity and the nerve based on its movements - Flex the hip and extend the knee
BPH
Succinate dehydrogenase
Anterior compartment of the thigh - femoral nerve
Resistance of the system increases. (Remember - when resistors are connected in a series - the total of the resistance is the sum of the individual resistances.)

48. What disease involves a lack of both T cell - mediated and humoral immune responses that can be either X- linked or AR?
Hemochromatosis
Remember the mnemonic PAM SMIDT P - (hyper) Parathyroid/ Paget disease A - Addison's disease M - Milk - alkali syndrome/metastatic cancer S - Sarcoidosis M - Multiple myeloma I - Immobilization/idiopathic D - Vitamin D intoxication T - Tumors
Severe combined immunodeficiency disease
Mixed (both cholesterol and calcium)

49. How is sleep affected in a person with alcohol intoxication?
Decreased REM sleep and REM rebound during withdrawal
>5 mm
In the supraoptic nuclei of the hypothalamus; it is stored in the posterior pituitary gland.
Streptococcus viridans

50. What is the term for the external urethra opening onto the ventral surface of the penis?
Rapid efflux of potassium
The enzyme lysyl oxidase requires Cu2+and O2 to function properly.
Hypospadia
Metanephros

Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?

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

Test your basic knowledge |

USMLE Step 1 Prep

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

Certifications

IT Skills

Business Skills

Soft Skills

Vocabulary

Languages

Engineering

Health Sciences

English

Math

Other Major Subjects

Browse all subjects

Browse all tests

Most popular tests