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TLS Online TPP Program

#Question id: 1674

Which of the following statements is TRUE of receptor editing?

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

  1. Has been described for antibody but not TCR

  2. Is associated with reexpression of RAG-1 in germinal centers

  3. Can involve V genes which are 3′ of the initially selected V gene

  4. Involves the S (switch) sequences

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TLS Online TPP Program

#Question id: 3617

#SCPH06 I Botany

Alternate forms of a gene is called
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#Question id: 1694

#SCPH01 Biochemistry

Antigen processing for presentation by MHC class II molecules involves:
TLS Online TPP Program

#Question id: 11273

#SCPH06 I Botany

Use the following diagram of a hypothetical food web to answer the question. The arrows represent the transfer of energy between the various trophic levels. Which letter represents an organism that could only be a primary consumer and secondary carnivores respectively?
TLS Online TPP Program

#Question id: 9254

#SCPH28 | Zoology

Organisms evolve over generations to become adapted to the environmental conditions to which they are exposed. The diversity of organisms that
occurs in any particular area thus may be largely determined by the abiotic factors limiting survivorship and reproduction of organisms in a region. Which of the following limit the range of Saguaro cactus in North America?

I) pollinators

II) sunlight

III) precipitation

IV) temperature
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#Question id: 19688

#SCPH06 I Botany

Which kind of event is represented by the T wave on the ECG recording?