Why is antibiotic use a common cause of Clostridium difficile infections?
A) The antibiotic wipes out the normal bacteria in the gut, allowing C. difficile to overgrow.
B) Antibiotics are perishable drugs that are easily contaminated with C. difficile spores.
C) C. difficile requires antibiotics for its own metabolism, and therefore grows best in its presence.
D) Antibiotics are usually given to immunocompromised patients ,and their low T cell count is favorable for C. difficile infection.
A) The antibiotic wipes out the normal bacteria in the gut, allowing C. difficile to overgrow.
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Before cell division of somatic cells, each chromosome must be replicated. After replication, the resulting two parts of each chromosome are held together by cohesin at the centromere. These two parts are referred to as:
A. Sister chromatids B. Homologous chromosomes C. Daughter chromosomes D. Kinetochores E. Genes
Drugs that are more effective when taken together are called
A. energetic. B. antagonistic. C. subtractive. D. synergistic.
Which of the following microbes is not correctly matched to an acceptable control method?
A) Enveloped virus: glutaraldehyde-based detergents B) Endospore: autoclaving C) Mycobacteria: hydrogen peroxide D) Prions: chlorine treatment E) Protozoan: boiling water
What term refers to fungal infections deep within the body?
A. systemic mycoses B. cutaneous mycoses C. subcutaneous mycoses D. superficial mycoses