Practice Questions

TLS Online TPP Program

#Question id: 5683

There may be an important connection between sperm translocation and capacitation. Which of the following option is correct explanation of above statement?

#Unit 5. Developmental Biology

The influx of bicarbonate ions (and possibly other ions) alkalinizes the sperm, raising its pH.
before entering the ampulla of the oviduct, the uncapacitated sperm bind actively to the membranes of the oviduct cells in the narrow passage (the isthmus) preceding it. This binding is temporary and appears to be broken when the sperm become capacitated.
The cholesterol efflux from the sperm cell membrane is thought to change the location of its “lipid rafts,” isolated regions that often contain receptor proteins that can bind the zona pellucida and participate in the acrosome reaction.
Capacitation is a transient event but translocation is not.

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TLS Online TPP Program

#Question id: 15481

#Unit 12. Applied Biology

One of the approaches for the bacterial strain improvement for primary metabolite include

TLS Online TPP Program

#Question id: 15482

#Unit 12. Applied Biology

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

#Unit 12. Applied Biology

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

#Unit 12. Applied Biology

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

#Unit 12. Applied Biology

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

#Unit 12. Applied Biology

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