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

TLS Online TPP Program

#Question id: 2086

#Unit 2. Cellular Organization

Which of the following is (are) not present in biomembranes?

TLS Online TPP Program

#Question id: 3029

#Unit 2. Cellular Organization

Which of the following obtain energy by oxidizing inorganic substances; energy that is used, in part, to fix CO2?

TLS Online TPP Program

#Question id: 10502

#Unit 6. System Physiology – Plant

Arabidopsis roots in iron-deficient growth media, thereby facilitating increased iron uptake. The resulting increase in iron content of the plants by

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#Question id: 3679

#Unit 3. Fundamental Processes

A mutation in an E. coli cell becomes active half-way through a round of replication. The cell completes the round of replication normally but then cannot start a second round. Which protein could be mutated?

TLS Online TPP Program

#Question id: 10217

#Unit 6. System Physiology – Plant

Another effect that appears to be a major factor in the stability of the photosynthetic apparatus, which occurs when excess excitation arriving at the PSII reaction center leads to its inactivation and damage is known as