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TLS Online TPP Program

#Question id: 19638

Nucleophilicity order is correctly represented by

#XL - P Chemistry
  1. CH3– < NH2– < HO– < F–
  2. CH3– > NH2– > HO– > F–
  3. NH2– > F– > HO– > CH3–
  4. CH3– ≃ NH2– > HO– ≃ F–
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TLS Online TPP Program

#Question id: 11297

#XL - R Botany

What is the difference between gross and net primary production?
TLS Online TPP Program

#Question id: 11298

#XL - R Botany

A pyramid of numbers shows _____________.
TLS Online TPP Program

#Question id: 11299

#XL - R Botany

Carbon is initially incorporated into the food chain by _____________
TLS Online TPP Program

#Question id: 11300

#XL - R Botany

What type of organisms convert nitrates and nitrites into nitrogen gas?
TLS Online TPP Program

#Question id: 11301

#XL - R Botany

How is phosphorus returned to the soil from organic phosphorus?
TLS Online TPP Program

#Question id: 11302

#XL - Q Biochemistry

Solute selectivity is elegantly illustrated by maltoporin. This bacterial outer membrane protein facilitates the diffusion of: