Agar is well suited as a solidifying agent because

A. it has been melted in boiling water

B. it can be cooled to about 40 to 42°C before hardening

C. it will not melt again until the temperature rises to about 80 to 90°C.

D. most microorganisms cannot degrade it.

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#Question id: 27332

#XL - T Zoology

Ribozymes are also termed as

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#Question id: 761

#XL - Q Biochemistry

In a DNA double helix each type of base forms a stable base pair with only one type of base. When bases on an RNA strand are involved in base pairing, which bases can form stable base pairs with more than one type of base?

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#Question id: 9608

#XL - S Microbiology

Darwin analogized the effects of evolution as the above-ground portion of a many-branched tree, with extant species being the tips of the twigs. The common ancestor of two species is most analogous to which anatomical tree part?

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#Question id: 1779

#XL - Q Biochemistry

Complement component C3 is cleaved by:

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#Question id: 10329

#XL - S Microbiology

If birds are excluded from the class Reptilia, the term that consequently describes the class Reptilia is