Which of the following pathogens has an infectious dose so low that a single infectious particle (cell, cyst, endospore, virus) can cause disease?

A. Shigella
B. Clostridium difficile
C. Hepatitis A virus
D. Giardia
E. Norovirus


Answer: E

Biology & Microbiology

You might also like to view...

Which of the following information can be

discerned from tree rings?

a. age of the tree b. fire history c. climate history d. former parasite infestations e. all of this information can be discerned from tree rings

Biology & Microbiology

Describe the relationship between single nucleotide polymorphisms and haplotypes and explain how each is used in

genome-wide association studieWhat will be an ideal response?

Biology & Microbiology

Cyanide binds and impairs one of the molecules involved in the synthesis of ATP. The target organelle for cyanide must be

A. mitochondria. B. peroxisomes. C. ribosomes. D. the endoplasmic reticulum. E. lysosomes.

Biology & Microbiology

How would the use of a large series of monozygotic and dizygotic twins enhance studies on the genetic basis of human behavior?

What will be an ideal response?

Biology & Microbiology