Which of the following statements about the intermediate disturbance hypothesis are true? Check all that apply.  

_____  The intermediate disturbance hypothesis predicts that most communities eventually reach an end-state or climax community.
_____  Intermediate disturbance should lead to increases in species richness.
_____  Disturbances tend to lead to the dominance of K-selected species.
_____  An example of intermediate disturbance would be a tree fall in a mature rain forest.
_____  Intermediate disturbance should lead to all successional stages being present in the community at the same time.


_____  The intermediate disturbance hypothesis predicts that most communities eventually reach an end-state or climax community.
__X__  Intermediate disturbance should lead to increases in species richness.
_____  Disturbances tend to lead to the dominance of K-selected species.
__X__  An example of intermediate disturbance would be a tree fall in a mature rain forest.
__X__  Intermediate disturbance should lead to all successional stages being present in the community at the same time.

Biology & Microbiology

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What functions does transposase perform during transposition of a DNA transposon? Select all that apply.

_____ Recognizes inverted repeats at the end of the TE. _____ Cleaves the ends of the TE. _____ Moves TE to a new site in the genome. _____ Cleaves target DNA in a staggered manner. _____ Fills in the base pairs at the staggered ends of the target DNA.

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If the enzyme catalyzing the N to O reaction is allosterically stimulated, there will be a build-up of

which compound(s)?

a. N b. O c. P d. Q e. P and Q

Biology & Microbiology

The presence of a suntan is due to increased activity of ________ in response to increased levels of ultraviolet radiation

Fill in the blank(s) with correct word

Biology & Microbiology

Rank the following cytoskeletal filaments from smallest to largest in diameter (1 = smallest in diameter, 4 = largest)

______ intermediate filaments ______ microtubules ______ actin filament ______ myofibril Fill in the blank(s) with correct word

Biology & Microbiology