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TLS Online TPP Program

#Question id: 40377

Given below are two statements:
Assertion (A): The classification system proposed by Bentham and Hooker is considered a Natural System of classification.
Reason (R): It groups plants based on a wide range of morphological characters and natural affinities, rather than just one or two arbitrary traits (like sexual organs).
Choose the correct answer:

#Botany
  1. Both (A) and (R) are true and (R) is the correct explanation of (A).
  2. Both (A) and (R) are true but (R) is NOT the correct explanation of (A).
  3. (A) is true but (R) is false.
  4. (A) is false but (R) is true.
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TLS Online TPP Program

#Question id: 40425

#Applied Microbiology

Given below are two statements:

    Statement I: A shuttle vector is designed to allow the cloning of a gene in E. coli and its subsequent expression in a eukaryotic cell.

      Statement II: pBR322 is a classic example of a shuttle vector because it can replicate in both animals and bacteria.

      In the light of the above statements, choose the correct answer from the options given below:
      TLS Online TPP Program

      #Question id: 40426

      #Applied Microbiology

        Assertion (A): Shuttle vectors are naturally occurring plasmids found in Agrobacterium tumefaciens.

          Reason (R): They contain two origins of replication, enabling them to replicate in two different host organisms

          Choose the correct option: 
          TLS Online TPP Program

          #Question id: 40427

          #Applied Microbiology

          Match the Vector Type (List I) with its unique Feature/Function (List II).

          List I (Vector Type)List II (Feature/Function)
          (a) Expression Vector(i) Can accomodate large DNA inserts (100-300 kb)
          (b) Shuttle Vector(ii) Designed for protein production (transcription/translation)
          (c) BAC (Bacterial Artificial Chromosome)(iii) Replicates in two unrelated host species
          (d) Cosmid(iv) Hybrid of plasmid and phage lambda 'cos' site
          TLS Online TPP Program

          #Question id: 40428

          #Applied Microbiology

          Which of the following stationary phases is most appropriate for the purification of a recombinant protein tagged with a Hexa-histidine (His-tag) sequence?
          TLS Online TPP Program

          #Question id: 40429

          #Applied Microbiology

          Read the following statements regarding chromatography techniques:

            Statement I: Ion exchange chromatography separates molecules based on differences in their net surface charge.

            Statement II: Gel filtration chromatography (Size Exclusion) separates molecules based on their specific binding to a ligand.

            Choose the correct answer from the options given below:
            TLS Online TPP Program

            #Question id: 40430

            #Applied Microbiology

              Assertion (A): Total cellular RNA passed through an oligo(dT) column results in the specific elution of mRNA.

                Reason (R): Prokaryotic rRNA and tRNA constitute the majority of total RNA and they lack a 3' Poly-A tail.

                Choose the correct option: