An 18-year girl pustular acne having these lesions over the past several years, which resolved spontaneously. However, the lesions have increased in quantity recently. The dermatologist prescribes an oral antibiotic for the treatment of these lesions. The drug most likely acts by which of the following mechanisms?
Blocks ribosomal initiation complex formation
Causes misreading at translation initiation
Interferes with translocation during translation
Prevents binding of aminoacyl- tRNA to ribosomes
Infectious proteins are present in
Satellite viruses
Gemini viruses
Prions
Viroids
Which of the following medications is contraindicated in patients with allergy to sulphonamides?
Levobunolol
Bimatoprost
Brinzolamide
Brimonidine
Regarding the functions of T lymphocytes:
T lymphocytes mature in the thyroid gland
All T cells secrete cytotoxic materials
T cells respond to proteins on the surface of host cells
T cells secrete IgG when they are activated.
An arm sling is used to support an injured
Arm or forearm
Wrist
Rib fracture
All of the above.
Which class of antibodies is abundant in body secretions?
IgM
IgA
IgG
IgE
Mast cell secretion during an immediate hypersensitivity reaction is stimulated when antigens combine with antibodies.
The primary function of the lymphatic system is:
Transporting nutrients and oxygen to tissues
Regulation of temperature, fluid, electrolytes, and pH balance
Production, maintenance, and distribution of lymphocytes
Removal of carbon dioxide and waste products from tissues
Which of the following white blood cells are generally considered responsible for the immune function?
Neutrophils
Eosinophils
Lymphocytes
Macrophage
Regarding the inflammatory response:
Tissue swelling is the first stage of the inflammatory response
Mast cells secrete chemotactic agents that attract lymphocytes
Macrophages secrete vasoactive materials during the inflammatory response
The inflammatory response can be triggered by antibody binding to the surface of micro-organisms.
