A single-stranded DNA molecule contains 40 nucleotides and has the sequence 5’-(GA)20-3’. When this single strand binds to a complementary DNA strand to form a B-DNA structure,

#Question id: 5319

#Part-A Aptitude & General Biotechnology

When gene duplication occurs to its ultimate extent by doubling all genes in a genome, which of the following results has occurred?

#Question id: 688

#Part-A Aptitude & General Biotechnology

Pauling and Corey’s studies of the peptide bond showed that:

#Question id: 10363

#Part-B Specialized Branches in Biotechnology

Free living nitrogen fixing takes place as shown in the following;

             TYPE                                                                                       N-FIXING GENERA

A) Cyanobacteria (blue-green algae)                                        i) Bacillus

B) Aerobic                                                                                     ii) Clostridium

C) Facultative                                                                              iii) Anabaena

D) Anaerobic nonphotosynthetic                                            iv) Rhodospirillum

E) Anaerobic photosynthetic                                                     v) Azospirillum

 Which of the following combination of free living nitrogen fixing bacteria is correct?

#Question id: 4135

#Part-A Aptitude & General Biotechnology

In the “activation” of an amino acid for protein synthesis:

#Question id: 10888

#Part-B Specialized Branches in Biotechnology

Ecologists have applied the top-down model to improve water quality in polluted lakes showing in picture. This approach, called biomanipulation, attempts to prevent algal blooms and eutrophication by altering the density of organism instead of chemical treatment as following