Tag: botany

Quizzes (264) Questions (5276)

Questions Related to botany

Multiple choice botany biotechnology: general introduction microbiology: organisms in industry biotechnology commercial applications of biotechnology

Which of the following is not an antibiotic?

  1. Griseofulvin

  2. Cephalosporin

  3. Citric acid

  4. Streptomycin

  5. Both (A) and (C)
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Citric acid is a weak organic acid with the formula -CHO. It is a natural preservative or conservative which occurs naturally in citrus fruits and is also used to add an acidic or sour taste to foods and drinks. Griseofulvin is an orally administered antifungal drug. It is used both in animals and humans, to treat fungal infections of the skin and nails. Whereas cephalosporins are a group of broad spectrum, semi-synthetic beta-lactam antibiotics derived from the mould Cephalosporium. Streptomycin is an antibiotic (antimycobacterial) drug, the first of a class of drugs called as aminoglycosides to be discovered,

Multiple choice botany biotechnology: general introduction microbiology: organisms in industry biotechnology commercial applications of biotechnology

Recombinant DNA technology is also called

  1. Biotechnology

  2. Modern biotechnology

  3. Genetic engineering

  4. Transgenic technology
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The correct option is C

The rDNA technology is the formation of DNA molecules formed by the laboratory method of genetic recombination to bring together genetic material from multiple sources, creating a sequence that would not otherwise be found in the genome.

Multiple choice botany biotechnology: general introduction microbiology: organisms in industry biotechnology commercial applications of biotechnology

Modern biotechnology is based on

  1. Protoplast fusion

  2. Tissue culture

  3. Recombinant proteins

  4. Genetic engineering
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Modern biotechnology is based on the the methods of genetic engineering.  It is a technique which involves the introduction of foreign DNA carrying the desired gene of interest into the host organism & thus change the phenotype of the host organism.

So, the correct option is 'Genetic engineering'.

Multiple choice botany biotechnology: general introduction microbiology: organisms in industry biotechnology commercial applications of biotechnology

Genetic engineering is

  1. Making artificial genes

  2. Hybridisation of DNA

  3. Making artificial limbs and diagnostic instruments

  4. Production of alcohol by using microorganisms
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Genetic engineering involves the manipulation of DNA, which includes the hybridization of DNA molecules from different sources.

Multiple choice botany biotechnology: general introduction microbiology: organisms in industry biotechnology commercial applications of biotechnology

Genetic engineering is

  1. Study of extra nuclear gene

  2. Manipulation of genes by artificial method

  3. Manipulation of RNA

  4. Manipulation of enzymes
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Genetic engineering aims to add new DNA to an organism to add one or more new favorable traits that are not found in that organism. Genes are the DNA segments that carry the genetic information for the production of particular proteins/ enzymes. These enzymes/proteins determine the traits of an organism, thus alteration in gene structure is the key to impart new traits to the organisms. The genetic information present in genes is copied to the RNA and finally into the proteins; further genes are inherited from generation to generation. Hence, manipulation of RNA, protein or extranuclear gene will be confined to that generation only. Hence, genetic engineering is the manipulation of genes.

Multiple choice botany biotechnology: general introduction microbiology: organisms in industry biotechnology commercial applications of biotechnology

Nuclear transplantation technique was discovered by

  1. Briggs

  2. Wilmut

  3. Gurdon

  4. Griffith
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Briggs and King discovered that normal hatched tadpoles can be obtained by transplanting the nucleus of a blastula cell to the enucleated eggs of Rana pipiens. This finding provided an initial answer to the long-standing question of whether the process of development and cell differentiation requires a loss or stable change in the genetic constitution of cells.