Tag: commercial studies

Questions Related to commercial studies

To export the report in ASCIL, HTML, or XML format, which of the following shortcut key one will use in tally ____________.

  1. ALT + E

  2. ALT + P

  3. ALT + EX

  4. ALT + IE


Correct Option: A

To select the budget, which of the following shortcut key one will use in tally ____________.

  1. ALT + B

  2. ALT + Q

  3. ALT + K

  4. ALT + M


Correct Option: A

Which of the following is/are the advantage of double entry system of book-keeping?

  1. It helps to find out profit, losses, assets and liabilities in the business at any time.

  2. It helps the management in planning, decision making, controlling and managing the overall business activities.

  3. It enables investors to take a decision whether to invest or not.

  4. All of the above


Correct Option: D

Recombinant DNA technology developed during

  1. 1970s

  2. 1980s

  3. 1990s

  4. 2000s


Correct Option: A
Explanation:
The correct option is A
rDNA technology is the way in which genetic material from one organism is artificially introduced into the genome of another organism and then replicated and expressed by other organism. It was advanced by the collaboration of stanley cohen and Herbert Boyer in $1972$.

Science of engineering and technology which is applied to life sciences is

  1. Biotechnology

  2. Genetic engineering

  3. Pathology

  4. Conchology


Correct Option: A
Explanation:

  • Biotechnology is the science of engineering and technology for industrial and other purposes, especially the genetic manipulation of microorganisms for the production of antibiotics, hormones, etc. 
  • Bioengineering is the application of the principles of engineering and natural sciences to tissues, cells and molecules. It improves the functions of plants and animals.

So, the correct answer is 'Biotechnology'.

Which is the first cloned animal?

  1. Dog

  2. Molly

  3. Dolly sheep

  4. Polly sheep


Correct Option: C
Explanation:

Dolly was a female domestic sheep, and the first mammal to be cloned from an adult somatic cell, using the process of nuclear transfer. Ian Wilmut developed Dolly.

What is true of reverse genetics

  1. Gene therapy

  2. Gene replacement

  3. Identification of gene from map position

  4. Deletion of genes and studying the effect


Correct Option: C
Explanation:

Reverse genetics is a method that is used to help understand the function of a gene by analyzing the phenotypic effects of specific engineered gene sequences. Reverse genetics usually proceeds in the opposite direction of so-called forward genetic screens of classical genetics. The goal in reverse genetics is Identification of gene from map position.

So, the correct answer is 'Identification of gene from map position.'

"Gray biotechnology" is?

  1. Industrial process

  2. Medical process

  3. Agricultural process

  4. Aquatic process


Correct Option: A
Explanation:

White or gray biotechnolgy involves industrial processes such as the development of new chemicals or production of new fuel for vehicles.

Correct  answer-A

All the following statements about Stanley Cohen and Herbert Boyer are correct but one is wrong. Which one is wrong?

  1. They discovered recombinant DNA ( rDNA) technology which marked the birth of modern biotechnology.

  2. They first produced a healthy sheep clone, a Finn Dorset lamb, Dolly, from the differentiated adult mammary cells.

  3. They invented genetic engineering by combining a piece of foreign DNA containing a gene from a bacterium with a bacterial (E. coli) plasmid using the enzyme restriction endonuclease.

  4. They isolated the antibiotic resistance gene by cutting out a piece of DNA from a plasmid which was responsible for conferring antibiotic resistance.


Correct Option: B
Explanation:

  • The recombinant DNA technology by which DNA fragments from different organisms are joined together to produce new genetic combinations was discovered by Stanley Cohen and Herbert Boyer. 
They used restriction endonucleases to digest a plasmid from E. coli and a foreign DNA segment and ligated them to produce a recombinant DNA.
They discovered antibiotic resistance gene from a piece of DNA that was conferring resistance to the transformed cells to grow in presence of that antibiotic.
  • Dolly, a Finn Dorset lamb, was produced by gene cloning by Ian Wilmut and his co-workers.
Hence Stanley Cohen and Herbert Boyer are not associated with the discovery of Finn Dorset lamb Dolly.
So, the correct answer is 'They first produced, healthy sheep clone, a Finn Dorset lamb, Dolly, from the differentiated adult mammary cells'.

Out of the following, which is not related to biotechnology?

  1. Synthesis of a gene

  2. Correction of a gene

  3. Alternation of gene

  4. Transfer of a gene from parent to off spring


Correct Option: D
Explanation:

Biotechnology deals with the techniques of using live microorganisms, plant or animal cells or their components or enzymes from organisms to produce products and processes useful to human beings. It includes DNA manipulation, gene manipulation, recombinant DNA technology, and Genetic Engineering. Synthesis of genes, correction of genes, alteration of genes are included in Genetic Engineering. 

Transfer of gene from parent to offspring is a normal way of heredity. All offsprings inherit some characters from their parents as a result of fertilization. 

Thus the correct option is 'Transfer of a gene from parent to off spring'.