TLS Online TPP Program

#Question id: 3855


In eukaryotes, which of the following modifications is made to a primary transcript prior to its transport out of the nucleus?

#Unit 3. Fundamental Processes
  1. poly(A) tails added to the 3' end 

  2. 7-methyl guanosine caps added to the 5' end

  3. exon sequences, when present, are spliced out 

  4. all of these

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TLS Online TPP Program

#Question id: 3607

#Unit 8. Inheritance Biology

Cystic fibrosis is caused by a recessive lethal gene and can be detected by an excess concentration of chloride in sweat. If a sweat test reveals a man to be heterozygous and his wife to be homozygous normal, what are the chances that their children will have the disease?

TLS Online TPP Program

#Question id: 15896

#Unit 12. Applied Biology

Somatic embryos are bipolar structures in that they have a radicle and a plumule,
a) Plumular end sometimes oriented toward the centre of callus or cell mass 
b) Plumular end always sticks out from the cell mass 
c) The radicular end is always oriented toward the centre of callus or cell mass
d) Radicular end is sometimes sticks out from the cell mass 
Which of the following is the well defined bipolar structure of somatic embryos

TLS Online TPP Program

#Question id: 31096

#Unit 4. Cell Communication and Cell Signaling

The calcium transport cycle is completed when: 

TLS Online TPP Program

#Question id: 3651

#Unit 3. Fundamental Processes

__________________is spontaneous hydrolytic reaction that involves cleavage of the N-glycosylic bond between N-9 of the purine bases A and G and C-1 of the deoxyribose sugar and hence loss of purine bases from the DNA.

TLS Online TPP Program

#Question id: 10682

#Unit 10. Ecological Principles

if 30 individuals of species 2 take up the same amount of resources as 5 individual of species 1 then the per capita competitive effects on species 1 of species 2 is