In a field experiment, autotrophs are provided a 14C-labelled carbon compound for photosynthesis. Radioactivity (14C) levels were then monitored at regular intervals in all the trophic levels. In which ecosystem is the radioactivity likely to be detected in longer time at the higher trophic level?

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#Question id: 1709

#XL - Q Biochemistry

What are the specialized cell type involved in the entry of lymphocytes into lymph nodes called?

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#Question id: 1710

#XL - Q Biochemistry

The very late antigen (VLA) molecules are:

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#Question id: 1711

#XL - Q Biochemistry

On entering a germinal center, the primary B-blasts grow exponentially to form which cell type in the dark zone?

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#Question id: 1712

#XL - Q Biochemistry

The tingible bodies inside germinal center macrophages are:

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#Question id: 1713

#XL - Q Biochemistry

The paracortical area of a lymph node comprises mainly:

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#Question id: 1714

#XL - Q Biochemistry

In a lymph node, the antigen pneumococcus polysaccharide SIII leads to: