NEET (UG) Solved Papers Portal

Match List I with List II:

Which of the following statements are correct?

A. The Amazon rainforest being cut and cleared for cultivation of soyabeans is an example of habitat loss.
B. Steller's sea cow and passenger pigeon became extinct due to over-exploitation by humans.
C. The Nile perch introduced into Lake Victoria in East Africa helped in population growth of cichlid fish in the lake.
D. Water hyacinth is an invasive species.
E. When a species becomes extinct, the plant and animal species associated with it are not affected.

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Which of the following statements are correct with reference to a transcription unit?

A. A transcription unit in DNA is defined primarily by three regions: promoter, structural gene and terminator.
B. The promoter is said to be located towards the 5'-end of the structural gene.
C. The promoter is a DNA sequence that provides binding site for RNA polymerase.
D. The promoter defines the template and coding strands.
E. The terminator is located towards the 3'-end of the coding strand and it defines the end of the process of transcription.

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Which one of the following statements is not true about the universal rules of binomial nomenclature?

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Which one of the following is the site for active ribosomal RNA synthesis?

$$2(C_{51}H_{98}O_6) + 145 O_2 \rightarrow 102 CO_2 + 98 H_2O + \text{energy}$$
The Respiratory Quotient (RQ) of a biomolecule used for respiration, as per the above equation would be :

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Arrange the following steps of DNA fingerprinting in a correct sequence.

A. Isolation of DNA and its digestion by restriction endonucleases.
B. Hybridisation using a labelled VNTR probe.
C. Transferring of separated DNA fragments to synthetic membranes.
D. Detection of hybridised DNA fragments by autoradiography.
E. Separation of DNA fragments by electrophoresis.

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Which of the following statements are correct with reference to packaging of DNA helix ?

A. Histones are organized to form a unit of eight molecules called histone octamer.
B. Histones are negatively charged basic proteins.
C. Histones are rich in the basic amino acid residues - lysine and arginine.
D. The positively charged DNA is wrapped around the histone octamer to form nucleosome.
E. The packaging of chromatin at higher levels requires an additional set of proteins called non-histone chromosomal proteins.

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Find the incorrect statement(s) about photosynthesis from the following:

A. The water splitting complex is associated with PS I.
B. C₄ plants use the C₃ pathway of CO₂ fixation as the main biosynthetic pathway.
C. In C₄ plants, photorespiration does not occur.
D. C₃ plants exhibit 'Kranz' anatomy.
E. ATP synthesis in chloroplast occurs through chemiosmosis.

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Arrange the following steps of somatic hybridisation in a correct sequence:

A. Digestion of cell walls.
B. Isolation of naked protoplasts.
C. Fusion of protoplasts to get hybrid protoplast.
D. Isolation of single cells from two different varieties of plants.
E. Growing of hybrid protoplast to form a new plant.

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Match List-I with List-II:

Which one of the following is not a characteristic of plant cells in the phase of elongation?

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The enzyme required for carboxylation in the Calvin cycle is

How many ATP and NADPH molecules are required to make one molecule of glucose through the Calvin pathway?

Which of the following floral formula is the correct floral formula of Solanaceae family?

Which of the following is an in situ conservation method?

Which of the following statements are not true regarding restriction endonucleases?

A. They are called molecular scissors.
B. These are the enzymes responsible for restricting the growth of bacteriophages in E. coli.
C. They cut the DNA only at the centre of the palindromic sites.
D. They remove nucleotides only from the ends of DNA fragments.
E. They recognise specific palindromic base-pair sequences.

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In racemose inflorescence,

Arrange the following in the correct developmental sequence related to microsporogenesis:

A. Microspore tetrads
B. Sporogenous tissue
C. Pollen grains
D. Pollen mother cells

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Identify the correct statements about biomolecules.

A. Lipids are generally water soluble.
B. Proteins are polypeptides.
C. Polysaccharides are long chains of sugars.
D. Adenine and guanine are substituted pyrimidines.
E. Almost all enzymes are proteins.

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Which of the following statements are true with reference to the sex-determination in honeybees?

A. An offspring formed from the union of a sperm and an egg, develops as a female (queen or worker).
B. An unfertilized egg develops as a male by parthenogenesis.
C. A male has half the number of chromosomes than that of a female.
D. Males produce sperms by meiosis.
E. Honeybees have a haplodiploid sex-determination system.

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Heterophyllous development in response to environment is an example of which of the following phenomena?