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TLS Online TPP Program

#Question id: 697

The major reason that antiparallel B-stranded protein structures are more stable than parallel B-stranded structures is that the latter:

#SCPH05 I Biotechnology

  1. are in a slightly less extended configuration than antiparallel strands.

  2. do not have as many disulfide crosslinks between adjacent strands.

  3. do not stack in sheets as well as antiparallel strands.

  4. have weaker hydrogen bonds laterally between adjacent strands.

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TLS Online TPP Program

#Question id: 668

#SCPH06 I Botany

What feature does a Ramachandran plot display?
TLS Online TPP Program

#Question id: 9208

#SCPH06 I Botany

Which of the following threats to biodiversity is targeted at specific species rather than groups of species?
TLS Online TPP Program

#Question id: 1650

#SCPH05 I Biotechnology

Recombination of V, D, and J Ig gene segments:
TLS Online TPP Program

#Question id: 4343

#SCPH05 I Biotechnology

Suppose an experimenter becomes proficient with a technique that allows her to move DNA sequences within a prokaryotic genome. If a researcher moves the repressor gene (lacI), along with its promoter, to a position at some several thousand base pairs away from its normal position, which of the following results would be expected?
TLS Online TPP Program

#Question id: 5100

#SCPH01 Biochemistry

During frog development, the blastocoel ________.