Q- Which of the following is the mechanism of action of ciprofloxacin? A- Inhibits bacterial protein synthesis through binding with 30 S B- Inhibits DNA gyrase and relaxation of DNA C- Interferes with bacterial cell wall synthesis D- Interferes with bacterial metabolic production Q- Which of the following is the most effective treatment of a […]
USMLE Review- 13
Q- Loss of individual cells by fragmentation of nuclei and cytoplasm caused by a chemotherapeutic agent is produced through which one of the following mechanisms? A- Acute inflammation B- Apoptosis C- Mitochondrial poisoning D- Phagocytosis Q- A newborn presents with absence of the contents of left scrotal sac. There is no other abnormality. Which of […]
USMLE Review- 12
Q- Which of the following is the most common cause of sudden death in patients with diabetes mellitus? A- Cerebral hemorrhage B- Gangrene C- Hyperosmolar coma D- Myocardial infarction Q- Which of the following is the central action of cocaine? A- Inhibition of phosphodiesterase B- Inhibition of reuptake of dopamine and epinephrine C- Inhibition of […]
USMLE Review- 11
Q- Which one of the following medications binds tumor necrosis factor (TNF-α) and used in the treatment of rheumatoid arthritis? A- Infliximab B- Methotrexate C- Paclitaxel D- Trastuzumab Q- Which one of the following conditions is characterized by painless blisters on the back of the hands and hyperpigmentation of the face? A- Contact dermatitis B- […]
USMLE Review- 10
Q- A 15-year-old boy is diagnosed with “Walking pneumonia”. Which of the following is the most effective treatment of this condition? A- Ampicillin B- Azithromycin C- Tetracycline D- Vancomycin Q- A patient is brought to the emergency room in a deep coma following a motor car accident. Vital signs, general examination and local chest and […]
USMLE Review- 9
Q- Which of the following explains the reason for the formation of atheroma at the bifurcations of arteries such as aorta and carotid? A-Cholesterol breakdown B- Endothelial dysfunction C- Hypoxemia D- Regular blood flow Q- Which of the following findings distinguishes chronic renal failure from acute renal failure? A- High serum calcium B- High serum […]