Which of the following is the most common form of microbe transmission in impetigo?

A. fomites
B. direct contact
C. mechanical vectors
D. blood
E. body fluids


Ans: B. direct contact

Biology & Microbiology

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. In many cases, negative feedback loops maintain homeostasis by adjusting hormones that act in ____

a. concert b. sequence c. antagonistic ways d. additive ways e. parallel

Biology & Microbiology

Cells of multicelled eukaryotes have receptors

that can recognize around ___ PAMPs.

a. 10 b. 100 c. 1000 d. 10,000 e. 100,000

Biology & Microbiology

Haploid nuclei

a. contain one set of chromosomes. b. contain two sets of chromosomes. c. contain half a set of chromosomes. d. are found in the cytosol of eukaryotic organisms.

Biology & Microbiology

Cystic fibrosis (CF) is a disease caused by a mutation in a gene called the cystic fibrosis transmembrane conductance regulator (CFTR)

The mutation causes the afflicted individual to produce thick, sticky mucus that the cilia lining the respiratory tract can't easily remove. There is no cure for CF, and most individuals suffering from this condition die in their 20s or 30s. Based on this scenario, what would you conclude about people who have CF? A) They have excessive growth rates that result in gigantism. B) They suffer from incessant coughing and chronic lung infections. C) They have dangerously high blood pressure. D) They have extremely thin skin that is easily damaged. E) They have elevated oxygen levels in their blood.

Biology & Microbiology