TLS Online TPP Program

#Question id: 23592


Which of the following list gives the amount of foreign DNA that can be inserted into vectors is not true?

#Unit 13. Methods in Biology
  1. YAC - 400 to 500 kb 
  2. Plasmids - 20 kb
  3. Bacteriophage l - up to 22 kb 
  4. Cosmids - up to 5 kb
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TLS Online TPP Program

#Question id: 6992

#Unit 5. Developmental Biology

Epimorphosis is regeneration through:

TLS Online TPP Program

#Question id: 1286

#Unit 4. Cell Communication and Cell Signaling

Syndecans are cell-surface proteoglycans that:

a. bind to collagens.

b. bind to multi-adhesive matrix proteins.

c. anchor cells to the extracellular matrix.

TLS Online TPP Program

#Question id: 689

#Unit 1. Molecules and their Interaction Relevant to Biology

In the diagram below, the plane drawn behind the peptide bond indicates the:   

A) absence of rotation around the C—N bond because of its partial double-bond character.

B) plane of rotation around the Ca—N bond.

C) region of steric hindrance determined by the large C=O group.

D) region of the peptide bond that contributes to a Ramachandran plot.

 Which of the following best represents the backbone arrangement of two peptide bonds?

TLS Online TPP Program

#Question id: 13144

#Unit 8. Inheritance Biology

Shell coiling of the snail Limnaea peregra(genetic maternal effect)  the shell coils (s+s+) which is termed dextral coiling, while some snails exhibiting sinistral coiling (ss). The allele for dextral (s +) is dominant over the allele for sinistral (s). If a male homozygous for dextral alleles (s+s+) is crossed with a female homozygous for sinistral alleles (ss) all of the F1 are heterozygous (s+s) and have a sinistral shell. If these F1 snails are self-fertilized, what is the phenotype of the F2 snail?

TLS Online TPP Program

#Question id: 14988

#Unit 4. Cell Communication and Cell Signaling

Which of the following cells contains granules but belongs to the different lineages from granulocytes?