All infectious diseases
A. are caused by microorganisms or their products.
B. only occur in humans.
C. involve viruses as the pathogen.
D. are contagious.
E. are caused by vectors.
Answer: A
You might also like to view...
Stopping transcription in prokaryotes requires
a. generation of a stop codon. b. copying a terminator sequence in mRNA. c. splicing introns out and pasting exons together. d. activation of gene repressors. e. generation of a poly-A tail.
Four of the five trees listed below are gymnosperms
Select the exception. a. ginkgo b. redwood c. cycad d. palm e. pine
Bacterial porins transport
A) any hydrophilic molecule regardless of size. B) hydrophilic molecules smaller than 600 Da. C) any hydrophobic molecule regardless of size. D) hydrophobic molecules larger than 600 Da. E) any molecule regardless of properties or size.
When the immune system improperly turns against the body's own molecules, the result is ________
A) an allergy B) AIDS C) an autoimmune disease D) an immunodeficiency disease