An epidemic facilitated by a high, dense
population is an example of a ___ factor.
a. density-dependent
b. density-independent
c. biotic
d. logistic
e. exponential
A
You might also like to view...
If the bacterial cells were viewed immediately after crystal violet was applied during the Gram stain procedure, gram-positive cells would be purple but gram-negative cells would be colorless.
Answer the following statement true (T) or false (F)
Saltatory ("jumping") conduction
a. occurs only in the central nervous system. b. is a quicker type of nerve conduction. c. occurs between nerves and muscles. d. involves the movement of impulses from node to node. e. involves both a quicker type of nerve conduction and the movement of impulses from node to node.
You have identified a mutation in a gene that also seems to decrease transcription of another gene 2000 bp away from the mutation site. What regulatory sequence, which may be found within another gene, has likely been mutated in this instance?
A) core promoter B) proximal elements C) enhancer sequence D) homeodomain motif E) upstream activator sequence
Although common in the past, today microbial mats develop ONLY in aquatic environments where
a. sulfide levels are low. b. the temperature is elevated. c. conditions restrict grazing and competition. d. conditions are hypersaline.