TLS Online TPP Program

#Question id: 559


In competitive inhibition, an inhibitor:

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. binds at several different sites on an enzyme.

  2. binds covalently to the enzyme.

  3. binds only to the ES complex.

  4. binds reversibly at the active site.

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TLS Online TPP Program

#Question id: 13087

#Unit 13. Methods in Biology

To express a yeast gene in E. coli, your task is to design a strategy to insert the yeast gene into the bacterial plasmid. Below is a map of the area of the yeast genome surrounding the gene in which you are interested.

 
The distance between each tick mark placed on the line above is 100 bases in length
Below are the enzymes you can use, with their specific cut sites shown 5’-XXXXXX-3’ 3’-XXXXXX-5’

 
The plasmid is 5,000 bases long and the two farthest restriction enzyme sites are 200 bases apart. The plasmid has an ampicillin resistance gene somewhere on the plasmid distal from the restriction cut sites.

                              
Which of the following restriction enzyme is the best choice for you use to design a way to get the insert into the vector?

TLS Online TPP Program

#Question id: 13002

#Unit 3. Fundamental Processes

Where in a eukaryotic cell do you think you would find each of the following proteins residing when it is actively performing its function. Be as specific as you can in terms of subcellular location.
Match the following with the correct subcellular location;

 

I) Polymerases

 

 

a) In the cytoplasm

 

II) Ribosomal proteins

 

 

b) Inside the plasma membrane.

 

III) DNA ligase

 

 

c) In the mitochondrial matrix

 

IV) protein that allows ions to pass in and out of the cell

 

 

d) In the nucleus of cells

 

V) Activator protein

 

 

e) Inside the nuclear membrane

 

VI) an enzyme in the Krebs/TCA cycle

 

 

 

VII) a protein that forms a channel through which mRNAs can be exported into the cytoplasm

 

 

 

TLS Online TPP Program

#Question id: 14906

#Unit 6. System Physiology – Plant

The specific linkages between sugar rings, including the specific carbons that are linked together and the configuration of the linkage, are important for the properties of the polysaccharide;
           
          I) Amylose                          a) β(1,3)-linkages                               
        II) Cellulose                          b) β (1,4)-linkages
         III) Callose                                   c) α(1,4)-linked
                                                             d) α (1,3)-linkages
Which of the following linkage combinations is correct linkages of the polysaccharides?


TLS Online TPP Program

#Question id: 12827

#General Aptitude

If the area of a triangle is 1176 cm2 and base : corresponding altitude is 3 : 4, then the altitude of the triangle is :

TLS Online TPP Program

#Question id: 29436

#Unit 6. System Physiology – Plant

Which of the following is incorrectly paired 
a. NodA is an N-acyltransferase
b. NodB is a chitin-oligosaccharide deacetylase
c. NodB is a N-acyltransferase
d. NodC is a chitin-oligosaccharide synthase
f. NodC is a chitin-oligosaccharide deacetylase