TLS Online TPP Program

#Question id: 164


The uncommon amino acid selenocysteine has an R group with the structure —CH2—SeH (pKa = 5).  In an aqueous solution, pH = 7.0, selenocysteine would:

#XL - T Zoology
  1. be a fully ionized zwitterion with -1 net charge

  2. be found in proteins as D-selenocysteine.

  3. never be found in a protein.

  4. be nonionic.

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TLS Online TPP Program

#Question id: 8910

#XL - R Botany

Both animals and fungi are heterotrophic. What distinguishes animal heterotrophy from fungal heterotrophy is that only animals derive their nutrition

TLS Online TPP Program

#Question id: 8911

#XL - S Microbiology

The larvae of some insects are merely small versions of the adult, whereas the larvae of other insects look completely different from adults, eat different foods, and may live in different habitats. Which of the following most directly favors the evolution of the latter, more radical, kind of metamorphosis?

TLS Online TPP Program

#Question id: 8911

#XL - R Botany

The larvae of some insects are merely small versions of the adult, whereas the larvae of other insects look completely different from adults, eat different foods, and may live in different habitats. Which of the following most directly favors the evolution of the latter, more radical, kind of metamorphosis?

TLS Online TPP Program

#Question id: 8912

#XL - S Microbiology

Both animals and fungi are heterotrophic. What distinguishes animal heterotrophy from fungal heterotrophy is that only animals derive their nutrition

TLS Online TPP Program

#Question id: 8912

#XL - T Zoology

Both animals and fungi are heterotrophic. What distinguishes animal heterotrophy from fungal heterotrophy is that only animals derive their nutrition

TLS Online TPP Program

#Question id: 8912

#XL - R Botany

Both animals and fungi are heterotrophic. What distinguishes animal heterotrophy from fungal heterotrophy is that only animals derive their nutrition