An inverted energy pyramid for an ecosystem, one where there are more consumers than producers at a given point in time, is possible if which of the following is true?
Select one:
a. Producers are reproducing more slowly than consumers.
b. There is intense sunlight for long periods of time, as in the tropics.
c. Producers are reproducing much more rapidly than consumers.
d. Decomposers are reproducing much more rapidly than consumers.
e. Consumers are reproducing more rapidly than producers.
a. Producers are reproducing more slowly than consumers.
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Meiosis II results in the formation of cell number
a. 2. b. 3. c. 4. d. 5. e. 4.
When separating DNA fragments by gel electrophoresis, what is the purpose of including molecular weight markers?
A. Markers provide an indication as to the total number of restriction fragments on the gel. B. Markers are used as a control to determine the relative size of restriction fragments. C. Markers are needed to estimate the relative charges on each of the restriction fragments. D. Markers ensure that fragments having a greater molecular weight migrate at the same rate as those having a lighter molecular weight.
Which of the following paired terms are incorrectly matched?
a. classical conditioning?extinction b. habituation?relevant stimuli c. imprinting?behavioral bonding d. insight?trial and error e. operant conditioning?reward
A group containing all the descendants of the same common ancestor is known as a ________
Fill in the blank(s) with correct word