Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

51.

Select the correct statements with respect to diseases and immunisation

  • if due to some reason B and T - lymphocytes are damaged, the body will not produce antibodies against a pathogen

  • injection of dead/inactivated pathogens causes passive immunity

  • certain protozoans have been used to mass produce hepatitis B vaccine

  • certain protozoans have been used to mass produce hepatitis B vaccine

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52.

In history of biology, human genome project led to the development of 

  • biotechnology

  • biomonitoring

  • bioinformatic 

  • bioinformatic 

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53.

Which one of the following conditions of the zygotic cell would lead to the birth of a normal human female child?

  • Two X - chromosomes 

  • Only one Y- chromosomes

  • Only one X - chromosome

  • Only one X - chromosome

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54.

Which one of the following techniques made it possible to genetically engineer living organism

  • Recombinant DNA techniques

  • X -ray diffraction

  • Heavier isotope labelling

  • Heavier isotope labelling

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55.

Ureters act as urogenital ducts in

  • humans males

  • human females

  • frog's both males and females

  • frog's both males and females

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56.

Read the following four statements (I - IV) about certain mistakes in two of them

I .The first transgenic buffalo, Rosie produced mile which was human alpha - lactal bumin enriched

II. Restriction enzymes are used in isolation of DNA from another macro -molecules.

III. downstream processing is one of the steps of R-DNA technology.

IV. Disarmed pathogen vectors are also used in the transfer of R - DNA into the host. 

Which are the two statements having mistakes?

  • Statement (II) and (III)

  • Statements (III) and (IV)

  • Statements (I) and (III)

  • Statements (I) and (III)


D.

Statements (I) and (III)

Transgenic Rosiae is actually Cow. It is first transgenic cow produced in 1997.

Restriction enzymes cut the DNA at a specific site. The separation of DNA is performed by gel electrophoresis

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57.

Good ozone is found in the 

  • mesosphere

  • troposphere

  • stratosphere

  • stratosphere

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58.

Which one of the following is a wrong matching of a microbe and its industrial product, while the remaining three are correct? 

  • Yeast - statins

  • Acetobacter aceti - acid

  • Clostridium Butulicum - lactic acid

  • Clostridium Butulicum - lactic acid

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59.

The logistic population growth is expressed by the equation

  • dt divided by dN space equals space Nr space open parentheses fraction numerator straight K space minus straight N over denominator straight K end fraction close parentheses
  • dN divided by dt space equals space rN space open parentheses fraction numerator straight K space minus straight N over denominator straight K end fraction close parentheses
  • dN/dt = rN

  • dN/dt = rN

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60.

Examine the figure below and select the right option giving all the four part (A, B,C and D) correctly identified.


  • A

    B

    C

    D

    Archegoni Ophore

    Female thallus

    Gemma cup

    Rhizoids

  • A

    B

    C

    D

    Archegoni

    Female thallus Bud Foot
  • A

    B

    C

    D

    Seta

    Sporophyte Protonema Rhizods
  • A

    B

    C

    D

    Seta

    Sporophyte Protonema Rhizods
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