The most plausible hypothesis to explain why species richness is higher in tropical than in temperate regions is that

 A) tropical communities are older.

 B) tropical regions generally have more available water and higher levels of solar radiation.

 C) higher temperatures cause more rapid speciation.

 D) diversity increases as evapotranspiration decreases.

TLS Online TPP Program

#Question id: 15482

#XL - S Microbiology

Over expression of primary metabolites are often achieved by

1. Frequency of RNA polymerase binding to the promoter region

2. Copy number increase of structural genes for these enzymes by genetic engineering

3. Chemically derived protein

Which combination below represent correct option?

TLS Online TPP Program

#Question id: 15483

#XL - S Microbiology

A novel technique for strain improvement combining the advantage of multi-parental crossing allowed by DNA shuffling with the recombination of entire genomes.

TLS Online TPP Program

#Question id: 15484

#XL - S Microbiology

Microbial process produces l-form of amino acids which makes the process advantageous as compared to synthetic processes. Strains employed for amino acid 1. 1. 1. production are 

1. wild-type strains 

2. auxotrophic mutants

3. regulatory mutants

4. auxotrophic regulatory mutants

Which of the following combination has correct options

TLS Online TPP Program

#Question id: 15485

#XL - S Microbiology

Plasmid vector systems for cloning in which bacteria have been established, for amino acid production and related strains.

A. Corynebacterium

B. Micrococcus, 

C. Brevibacterium, 

D. Microbacterium

Choose the correct option.

TLS Online TPP Program

#Question id: 15486

#XL - S Microbiology

Why glutamic acid accumulation in cell is not a good idea for Corynebacterium

TLS Online TPP Program

#Question id: 15487

#XL - S Microbiology

Strains utilized for glutamate overproducers such as Cornybacterium are natural