A new E. coli mutant was tested for auxotrophy. The mutant grows on:

minimal medium (M) + arginine (A) + proline (P)

M + P + histidine (H)

M + A + H + P

but not on M or on M + A + H. The mutant requires

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#Question id: 4576

#XL - S Microbiology

Which of the following pairs of structures is least likely to represent homology?

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#Question id: 1059

#XL - T Zoology

A limiting factor for viral infection is

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#Question id: 18548

#XL - R Botany

Sugarcane is cultivated through 

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#Question id: 34076

#XL - S Microbiology

Which of the following are methods used to obtain a pure culture in microbiology?

A. Streak plate method

B. Pour plate method

C. Spread plate method

D. Roll-tube method

E. Enrichment culture

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#Question id: 17281

#XL - R Botany

Identify each of the following structures as haploid or diploid: 

A) sporophyte 

B) spore 

C) gametophyte 

D) zygote 

E) Sperm