In bacteria, some of the functions of eukaryotic cells are performed

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#Question id: 11099

#Unit 7. System Physiology – Animal

In the mammalian alveoli, the partial pressure of O2 is _______ that of atmospheric air and the CO2 partial pressure is _______ that of atmospheric air

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#Question id: 23242

#Unit 2. Cellular Organization

Carboxysomes containing bacteria are nitrifying bacteria. Which among the following are examples of such bacteria?

1.Cyanobacteria 

2.E. Coli

3.Thiobacilli

Mark the option with correct combination?

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#Question id: 12968

#Unit 10. Ecological Principles

Most terrestrial ecosystems have a pyramidal structure of where biomass of producers > primary consumers > secondary consumers > tertiary consumers. However, some aquatic ecosystems have an inverted pyramidal structure where the standing biomass of producers < primary consumers. An explanation for this is:

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#Question id: 31368

#Unit 5. Developmental Biology

In which condition a stem cell stabilize the stem cell pool as well as generate a daughter cell that goes on to differentiate?

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#Question id: 4152

#Unit 3. Fundamental Processes

The pathway for polypeptides exported from E. coli includes the following steps, which occur in what order for correct export?

1.  A chaperone, SecA, binds to the polypeptide.

2.  A chaperone, SecB, binds to the polypeptide.

3.  ATP is hydrolyzed by Sec A.

4.  SecA pushes 20 amino acids of the polypeptide into the translocation complex.