Many pathogenic bacteria produce a(n)________ that protects them from phagocytosis by host cells
a. flagellum
b. pilius
c. capsule
d. endospore
Ans: c. capsule
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A time lag in the response of survivorship and fecundity to a population's density can occur because ____ is usually
determined by the availability of resources at some time in the past.
a. death b. immigration c. fecundity d. competition e. population growth
Hair color and eye color are examples of a person's
A.) recessive traits. B.) dominant alleles. C.) genotype. D.) phenotype.
Antimicrobial peptides can do all of the following except
A) stimulate leukocytes. B) regulate body temperature. C) insert themselves into target cell membranes. D) disrupt plasma membrane and/or cell wall. E) target intracellular components.
Birds, snakes, lizards, turtles, and crocodiles are all thought to share a common ancestor and several homologous traits. Assuming that this is true, these groups of animals and their common ancestor would represent
A. a polyphyletic group. B. an outgroup. C. a species cluster. D. a monophyletic group. E. homoplastic convergence.