All of the members of the same species occupying the same area at the same time constitute:a
an individual.
b. a population.
c. a community.
d. an ecosystem.
e. a biosphere.
B
Biology & Microbiology
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The dose of an antigen that kills 50% of animals in a test group and is used to estimate the virulence of a pathogen is known as
A) Antigen dose50. B) Virulence-50. C) LD50 (lethal dose50). D) Death rate-50.
Biology & Microbiology
Is the average ecological footprint getting larger or smaller globally? What will be an ideal response?
Biology & Microbiology
Which immune system protects the body from its own cancerous cells?
A) cell-mediated immune system B) antibody-mediated immune system C) enzyme immune system D) inflammatory immune system
Biology & Microbiology
Because all cells engage in protein synthesis, there are few antimicrobial drugs that selectively inhibit this process
Indicate whether the statement is true or false
Biology & Microbiology