Primary production generally determines the sizes of higher trophic levels. This observation provides support for __________ control of community structure.

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#Question id: 15256

#Unit 2. Cellular Organization

A low molecular weight molecules that are able to complex with ferric iron and supply it to the cell

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#Question id: 34179

#Unit 3. Fundamental Processes

A. At the replication fork, the dsDNA in front of the fork becomes increasingly positively supercoiled.

B. At the replication fork, the dsDNA in front of the fork becomes increasingly negatively supercoiled.

C. The “swivelase” that prevents the accumulation of positive supercoils ahead of the replication fork.

D. The “swivelase” that prevents the accumulation of negative supercoils ahead of the replication fork.

Which of the following combination of statements is correct

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#Question id: 11145

#Unit 7. System Physiology – Animal

Two fundamental concepts about the ion channels of a "resting" neuron are that the channels ________.

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#Question id: 15903

#Unit 12. Applied Biology

Protoplast can be produced from suspension cultures, callus tissues or intact tissues by enzymatic treatment with

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#Question id: 9607

#Unit 9. Diversity of Life Forms

The common housefly belongs to all of the following taxa. Assuming you had access to textbooks or other scientific literature, knowing which of the following should provide you with the most specific information about the common housefly?