In an pond ecosystem the _____ is always greater than the _____ .

(a) number of primary producers . . . number of secondary consumers

(b) biomass of secondary consumers . . . biomass of primary consumer

(c) assimilation efficiency of primary consumers . . . assimilation efficiency of secondary consumers

(d) biomass of primary producers . . . biomass of primary consumers

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#Question id: 19866

#Unit 13. Methods in Biology

Which of the following variants of PCR has been devised to increase the specificity of PCR without lowering the efficiency by variation annealing temperature?

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#Question id: 4470

#Unit 3. Fundamental Processes

Most recent experiments suggest that the last of these is at least an important part of the story and that the conformational change causes the elongating complex to stall, with dissociation following more slowly- this conformational change caused by,

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#Question id: 2727

#Unit 2. Cellular Organization

What marks the difference between the solenoid and the zig-zag models of 30 nm fibres?

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#Question id: 12235

#Unit 10. Ecological Principles

Which  of  the  following  are  important  biotic  factors  that  can  affect  the  structure  and  organization of  biological communities?

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#Question id: 10734

#Unit 10. Ecological Principles

This term is a measure of the ability of a system to resist change in the face of outside influences.