Which of the following is responsible for the switching on and off of the lac operon?(a) Lactose(b) Ethanol(c) Malate(d) FructoseI had been asked this question during an internship interview.Asked question is from Molecular Basis of Inheritance topic in section Molecular Basis of Inheritance of Biology – Class 12

Which of the following is responsible for the switching on and off of

1.	Which of the following is responsible for the switching on and off of the lac operon?(a) Lactose(b) Ethanol(c) Malate(d) FructoseI had been asked this question during an internship interview.Asked question is from Molecular Basis of Inheritance topic in section Molecular Basis of Inheritance of Biology – Class 12
Answer» The correct OPTION is (a) Lactose For explanation I would say: The substrate for the enzyme β-galactosidase is lactose. The lac operon can EITHER be in its SWITCHED on or off position. This OPERATION is being regulated by lactose which is also known as the inducer.

Discussion

No Comment Found

Related InterviewSolutions

How does polymorphism arise?(a) Mutations(b) Recombination(c) Diploidy(d) HaploidyThe question was posed to me in class test.The origin of the question is Molecular Basis of Inheritance topic in portion Molecular Basis of Inheritance of Biology – Class 12
How DNA can be as a useful tool in the forensic applications?(a) Showing the same degree of polymorphism with hair follicles(b) Showing different degrees of polymorphism with saliva(c) By not possessing any hereditable information(d) By the presence of lysozymes in itThis question was posed to me in final exam.My question is based upon Molecular Basis of Inheritance in chapter Molecular Basis of Inheritance of Biology – Class 12
The sequences of satellite DNA do not code for proteins.(a) True(b) FalseI got this question during an online exam.Query is from Molecular Basis of Inheritance topic in chapter Molecular Basis of Inheritance of Biology – Class 12
What are the small peaks achieved by the repetitive DNA during the density gradient centrifugation process of DNA finger printing known as?(a) Non repetitive DNA(b) Trough(c) Satellite DNA(d) Histone DNAThe question was asked in an online interview.I'd like to ask this question from Molecular Basis of Inheritance in chapter Molecular Basis of Inheritance of Biology – Class 12
What are the differences in the specific regions of DNA sequence called during DNA finger printing?(a) Non repetitive DNA(b) Repetitive DNA(c) Satellite DNA(d) Histone DNAI have been asked this question in examination.Origin of the question is Molecular Basis of Inheritance in chapter Molecular Basis of Inheritance of Biology – Class 12
Repeated sequence makes a large portion of the human genome.(a) True(b) FalseThe question was posed to me in unit test.The above asked question is from Molecular Basis of Inheritance in division Molecular Basis of Inheritance of Biology – Class 12
How many nucleotides are present in the human genome?(a) 3164.7 million(b) 2015.9 million(c) 1982.0 million(d) 3247.9 millionThe question was posed to me during an interview.The query is from Molecular Basis of Inheritance topic in division Molecular Basis of Inheritance of Biology – Class 12
Based on whose principle were the DNA molecules fragmented in the year 1977?(a) Maurice Wilkins(b) Rosalind Franklin(c) James Watson(d) Frederick SangerI have been asked this question in my homework.This intriguing question originated from Molecular Basis of Inheritance in portion Molecular Basis of Inheritance of Biology – Class 12
How are the genetic and the physical maps assigned on the genome?(a) Based on microsatellites(b) Based on macrosatellites(c) Based on kinetochores(d) Based on centromeresThis question was posed to me at a job interview.Question is from Molecular Basis of Inheritance topic in division Molecular Basis of Inheritance of Biology – Class 12
Which of the following is a suitable vector for the process of cloning in Human Genome Project (HGP)?(a) PAC (Protozoal Artificial Chromosomes)(b) FAC (Fungal Artificial Chromosomes)(c) VAC (Viral Artificial Chromosomes)(d) YAC (Yeast Artificial Chromosomes)This question was posed to me in a job interview.The origin of the question is Molecular Basis of Inheritance topic in chapter Molecular Basis of Inheritance of Biology – Class 12

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment