The majority of human infections with Campylobacter species are caused by which of the following?
A. Direct contact with carriers of the bacterium
B. Contamination of food, milk, or water with animal feces
C. Multiplication of the organism in food products
D. Direct contact with persons infected with the bacterium
Ans: B. Contamination of food, milk, or water with animal feces
You might also like to view...
A chemical imbalance in the blood can cause the heart to stop pumping blood, which will have a detrimental effect on other organs. This observation can be attributed to:
A. Equilibrium state B. Emergent properties C. Reductionism D. Evolutionary conservation
Which of the choices best describes macroevolution?
A) Individuals with one genotype reproduce more than individuals with another genotype in a population. B) Mutation creates new alleles that are dominant. C) A new species emerges. D) Dominant and recessive allele frequencies are in equilibrium in a population.
Cancer cells
1.have altered plasma membranes. 2.are unable to attach to other cells. 3.divide to produce a high density of cells. 4.form pseudopodia, enabling them to move about. 5.all of the choices
Surfactants function as microbicidal agents because they do what to microorganisms?
A) Inhibit peptide bond formation during translation B) Interfere with the synthesis of peptidoglycan C) Prevent mRNA transcription D) Denature proteins E) Disrupt the integrity and lower the surface tension of cell membranes