Staph infections, caused by the bacterium Staphylococcus aureus, are increasing in frequency and are more difficult to treat with antibiotics. Many staph infections are now caused by MRSA, and methicillin-resistant strain of S. aureus. What explains the more widespread phenomenon of MRSA prevalence in staph infections?
A. Vaccines became less effective because of the changes in the human immune system
B. Antibiotics caused mutations in the bacteria
C. hospitals decreased their sanitation practices
D. Resistant bacteria already existed from random mutations and the excessive use of antibiotics increased the frequency of the resistant strain
Select your answer:
Topics:
Muscle Anatomy Eyes Head and Neck Anatomy A Treat For Mosquitoes Pancreatitis Dentistry Components of Physical Fitness Endocrine System Bacteria & Disease Sarcomere Anatomy Microbiology Body Fluids Psychopathology Upper Limb Phlebotomy Medical TerminologyOther quiz:
Bone Physiology › ViewTissue that attaches muscle to bone
A. Ligament
B. Tendon
C. Articular cartilage
D. Fascia
Circulation and Excretion › View
For oxygen to become bound to hemoglobin for transport in the blood, which of the following would be true?
A. 2 membranes must be crossed, in and out of the cell lining the lung and then bind directly to the hemoglobin
B. 4 membranes, in and our of the cell lining the lungs, in and out of the endothelial cell lining the alveolar capillary, and then bind directly to hemogloblin
C. 5 membranes – in and out of the cell lining the lung, in and out of the endothelial cell lining the alveolar capillary and into the RBC to bind to hemoglobin