The cytoplasm of a bacterium

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#Question id: 29073

#Unit 10. Ecological Principles

Given below is an ecological pyramid, which of the following statements about these pyramid is correct:

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#Question id: 1666

#Unit 4. Cell Communication and Cell Signaling

What is the first immunoglobulin heavy chain class to be expressed on the surface of a newly produced B-cell?

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#Question id: 18079

#Unit 9. Diversity of Life Forms

Within a gymnosperm megasporangium, what is the correct sequence in which the following should appear during development, assuming that fertilization occurs? 

1. Sporophyte embryo 2. female gametophyte 

3. egg cell                 4. megaspore 

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#Question id: 4652

#Unit 11. Evolution and Behavior

The graph depicts four possible patterns for the abundance of 3TC-resistant HIV within an infected human over time. If 3TC resistance is costly for HIV, then which plot (I—IV) best represents the response of a strain of 3TC-resistant HIV over time, if 3TC administration begins at the time indicated by the arrow?

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#Question id: 7527

#General Aptitude

A train is running at a speed of 72 km/h . it crosses a platform whose length is half that of the train in 30 seconds. what is the length of the platform?