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TLS Online TPP Program

#Question id: 4151

The signal sequences that direct proteins to the nucleus are:

#Unit 3. Fundamental Processes

  1. always at the amino terminus of the targeted protein.

  2. cleaved after the protein arrives in the nucleus.

  3. glycosyl moieties containing mannose 6-phosphate residues.

  4. not located at the ends of the peptide, but in its interior.

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TLS Online TPP Program

#Question id: 7040

#Unit 5. Developmental Biology

T-box (Tbx)-
TLS Online TPP Program

#Question id: 12008

#Unit 10. Ecological Principles

When exposed to a cold environment for several weeks, many small mammals dramatically increase their capacity for heat production primarily by means of
TLS Online TPP Program

#Question id: 4259

#Unit 3. Fundamental Processes

Rank the following one-base point mutations with respect to their likelihood of affecting the structure of the corresponding polypeptide (from most likely to least likely).

1. insertion mutation deep within an intron

2. substitution mutation at the third position of a codon in an exon

3. substitution mutation at the second position of a codon in an exon

4. deletion mutation within the first exon of the gene
TLS Online TPP Program

#Question id: 31264

#Unit 4. Cell Communication and Cell Signaling

Which of the following reason is responsible for origin of mutation in tumor suppressor genes? 
TLS Online TPP Program

#Question id: 18759

#Unit 13. Methods in Biology

What is the name of the site where Cre enzyme acts?