Microbial antagonism means that
A) good microbes are replaced by invading pathogenic microbes.
B) good microbes establish themselves in the host and prevent invasion by pathogenic microbes.
C) the host is predisposed to disease due to the microbes they harbor.
D) pathogenic bacterial growth is encouraged by the presence of established host organisms.
Ans: B) good microbes establish themselves in the host and prevent invasion by pathogenic microbes.
You might also like to view...
Which one of the following statements most accurately describes methylation?
A. Methyl groups are most often added to cytosines adjacent to guanine bases in or near the promoter sequence, increasing the probability of gene expression. B. Methyl groups are most often added to cytosines adjacent to guanine bases in or near the promoter sequence, decreasing the probability of gene expression. C. Methyl groups are most often added to adenine-thymine base pairs because they are held by only two hydrogen bonds, and this increases the probability of gene expression. D. Methyl groups are most often added to guanine-cytosine base pairs because they are held by three hydrogen bonds, and this decreases the probability of gene expression. E. Methyl groups are added to most bases in the promoter region of a specific gene so that RNA polymerase and its associated proteins will bind more efficiently.
Which of the following are in order from primary producer to fourth trophic level?
a. grass ? coyote ? bird ?grasshopper b. coyote ? bird ? grasshopper ? grass c. bird ? grasshopper ? grass ? coyote d. grass ? grasshopper ? bird ? coyote e. grasshopper ? grass ? bird ? coyote
Which pathway yields only two ATP molecules per glucose?
What will be an ideal response?
Phytophthora infestans is a pathogen that attacks a variety of plants. This pathogen is an example of what type of protist?
A. fungus-like protists B. periphyton C. plankton D. algae E. protozoans