Tag: biotechnology and genetic engineering

Quizzes (15) Questions (193)

Questions Related to biotechnology and genetic engineering

Multiple choice biology biotechnology and genetic engineering making use of enzymes genetic technology genetic engineering

Nitrocellulose and nylon are used in which of the following technique of immobilisation?

  1. Entrapment

  2. Encapsulation

  3. Adsorption

  4. Cross-linking
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Encapsulation involves enclosing enzymes within a semi-permeable membrane, such as nitrocellulose or nylon, to immobilize them while allowing substrate and product diffusion.

Multiple choice biology biotechnology and genetic engineering making use of enzymes genetic technology genetic engineering

The pore size of the matrix used for immobilisation of enzymes depends upon

  1. Concentration of enzyme

  2. Molecular weight of enzyme

  3. Catalytic nature of enzyme

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The pore size of an immobilization matrix must be chosen to accommodate the enzyme's size (molecular weight) and ensure that the enzyme concentration is optimized for the reaction.

Multiple choice biology biotechnology and genetic engineering making use of enzymes genetic technology genetic engineering

Which of the following is a common use of somatic hybridization?

  1. Transfer of jumping genes

  2. Transfer of some of the chromosomes between divergent species

  3. Transfer of resistant gene

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The process by which protoplasts of two different plant species are fused together and transfer of some of the chromosomes occurs between two species to form hybrids is called as somatic hybridization and the hybrids that are produced is known as somatic hybrids. The steps of somatic hybridization involve - isolation of protoplasts, the fusion of different protoplasts and selection of hybrids. 

Thus, the correct answer is option B.

Multiple choice biology biotechnology and genetic engineering making use of enzymes genetic technology genetic engineering

The top five crops, as on date, in terms of annual world production in millions of metric tons belong to the families ________________.

  1. Gramineae and Solanaceae

  2. Gramineae and Cruciferae

  3. Gramineae and Leguminasae

  4. Leguminosae and Malvaceae
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The top world crops, such as wheat, rice, corn, and potatoes, belong primarily to the families Gramineae (grasses) and Solanaceae (nightshades).

Multiple choice biology biotechnology and genetic engineering making use of enzymes genetic technology genetic engineering

Which of the following is a method of covalent bonding used during immobilisation?

  1. Diazotation

  2. Phosphorylation

  3. Dehydrogenation

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Covalent bonding is one of the commonly used methods of enzyme immobilization which engages the formation of covalent bonds between the enzymes & the support. Diazotation is a method of convalent bonding which displays the bonding between the amino group of support & tyrosyl or histidyl group of enzyme. 
So, the correct answer is 'Diazotation'