Which bacterial cell wall component is recognized by the immune system as an endotoxin?

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#Question id: 11405

#XL - R Botany

Vulnerability to extinction can be linked to species following characteristics. Which of the following statement are correct?

A. Endemism species are more prone to extinction than fragmented

B. Species that are capable of migrating between fragments of habitat, such as between mainland areas and islands, may be more resistant to extinction

C. Population variability species are less prone to extinct

D. Species with naturally long life spans may be more likely to become extinct

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#Question id: 810

#XL - Q Biochemistry

Which of the following statements concerning the process of spontaneous folding of proteins is false?

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#Question id: 20202

#XL - P Chemistry

The correct order of number of unpaired electrons in the ions Cu2+, Ni2+, Fe3+ and Cr3+ is

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#Question id: 3656

#XL - S Microbiology

In nucleotide excision repair, an endonuclease makes nicks on either side of the lesion.

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#Question id: 9269

#XL - R Botany

The distribution of electrons in the excited molecule is somewhat different from the distribution in the groundstate molecule, Absorption of blue light excites the chlorophyll to a higher energy state than absorption of red light because