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: 3364

#Unit 11. Evolution and Behavior

Which of the following equations represents the corresponding equilibrium for a locus with three alleles p, q and r of diploid individuals? (P, Q and R represent the frequencies of p, q and r, respectively)

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#Question id: 18953

#Unit 13. Methods in Biology

These membranes are made on Teflon base: they have high affinity for proteins, are highly mechanically stable like nylon membranes and can be used for provides high binding capacity for proteins and nucleic acids for western, southern, and northern blotting methods.  

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#Question id: 19451

#Unit 13. Methods in Biology

We use different lenses in combinations. The total magnification is represented as

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#Question id: 15255

#Unit 2. Cellular Organization

Small organic molecules that usually make up all or part of enzyme cofactors and only very small amounts sustain growth

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#Question id: 11687

#Unit 7. System Physiology – Animal

Spermatogenesis is regulated by a negative feedback control system in which follicle-stimulating hormone (FSH) stimulates the steps in sperm cell formation. What is the negative feedback signal associated with sperm cell production that inhibits pituitary formation of FSH?