Traditionally, most ecologists have assumed that community stability is a consequence of:
a. competition.
b. predation.
c. community complexity.
d. the relative size of realized niches among species.
e. disease.
C
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Type II survivorship curves ____
a. are characteristic of humans and elephants b. indicate a fairly constant rate of death at all ages c. indicate a high mortality rate in the very young d. are characteristic of species in which most individuals live a relatively long life and die of old age e. are typical of species with high biotic potentials
The term "protist" is used to refer to a eukaryote that is not a plant, animal, or fungus.
Answer the following statement true (T) or false (F)
What is the role of interleukins?
A) chemotaxis of leukocytes B) production of virally infected cells C) ensuring production of enough leukocytes D) signaling between leukocytes E) complement activation
What are the products of the replication of one DNA molecule?
A) four identical double-stranded DNA molecules B) a set of four sister chromatids C) a pair of homologous chromosomes D) two strands joined into one double-stranded DNA molecule E) two identical double-stranded DNA molecules