TLS Online TPP Program

#Question id: 662


________ received a Nobel Prize in 1964 for determining the structure of vitamin B12. He/she also solved the structure of penicillin in 1947 and developed many techniques used in the study of large proteins.

#SCPH28 | Zoology
  1. Max Perutz    

  2. Linus Pauling

  3. Rosalind Franklin    

  4. Dorothy Crowfoot

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TLS Online TPP Program

#Question id: 933

#I Life Science/ Life Sciences Group – I-V

Industrially, nitrogen for use in fertilizers is converted to ammonia by ________.

TLS Online TPP Program

#Question id: 17659

#SCPH06 I Botany

During your study of the gene for an enzyme you have isolated an amber mutation in the middle of the gene which produces a truncated form of the enzyme. By placing a +1 frameshift mutation a short distance before the amber mutation and a –1 frameshift mutation a short distance after the amber mutation you create a triple mutant that restores expression of a functional, full-length enzyme. 
a) +1 frameshift puts the amber mutation out of frame so that it is no longer read as a stop.
b) -1 frameshift is inserted after the amber so that no longer read as a stop.
c)  -1 frameshift is inserted after the amber to restore the frame of the end of the protein.
d) +1 frameshift puts the amber mutation out of frame so that it restore the frame of the end of the protein.
Which of the following is the correct prediction about the frame shift mutation?

TLS Online TPP Program

#Question id: 19343

#SCPH01 Biochemistry

The Russian doll model and parchment model are two types of models used to describe the structure of ________carbon nanotube?

TLS Online TPP Program

#Question id: 14116

#SCPH01 Biochemistry

Which of the following statements are CORRECT when a protein sequence database is searched using the BLAST algorithm? 
P. A larger E-value indicates higher sequence similarity 
Q. E-value < 10^-10 indicates sequence homology 
R. A higher BLAST score indicates higher sequence similarity 
S. E-value > 10^10 indicates sequence homology 

TLS Online TPP Program

#Question id: 5208

#SCPH28 | Zoology

Fragments of DNA have been extracted from the remnants of extinct wooly mammoths, amplified, and sequenced. These can now be used to