At which cell cycle checkpoint, cell cycle is halted if cell’s DNA is damaged?(a) G1 – S(b) S – G2(c) G2 – M(d) G0 – G1I got this question during an interview.Asked question is from Regulation of the Cell Cycle by Protein Kinases topic in division Biosignalling of Biochemistry

At which cell cycle checkpoint, cell cycle is halted if cell’s DNA i

1.	At which cell cycle checkpoint, cell cycle is halted if cell’s DNA is damaged?(a) G1 – S(b) S – G2(c) G2 – M(d) G0 – G1I got this question during an interview.Asked question is from Regulation of the Cell Cycle by Protein Kinases topic in division Biosignalling of Biochemistry
Answer» Right answer is (a) G1 – S Best EXPLANATION: During G1 phase cell grows and during S phase DNA replicates. So there MUST be a CHECKPOINT between these two phases to check if there is a DAMAGE in DNA.

Discussion

No Comment Found

Related InterviewSolutions

Which of the following occurs in meiosis but not in mitosis?(a) Attachment of spindle fibers to kinetochore(b) Replication of DNA prior to start of cell division(c) Separation of sister chromatids at anaphase(d) Pairing of homologous chromosomes at metaphase plateThis question was posed to me in examination.Origin of the question is Regulation of the Cell Cycle by Protein Kinases topic in portion Biosignalling of Biochemistry
Which of the following statements regarding cyclins is not correct?(a) They can become linked to ubiquitin(b) They catalyze the phosphorylation of protein(c) They contain a specific amino acid sequence that target them for proteolysis(d) They are activated and degraded during cell cycleThe question was posed to me during a job interview.Question is taken from Regulation of the Cell Cycle by Protein Kinases topic in section Biosignalling of Biochemistry
A factor involved in regulating the fate of stem cells in plant development is _________(a) Adrenaline(b) Epinephrine(c) Thyroid stimulating hormone(d) CLV1The question was asked in examination.Question is from Signaling in Microorganisms and Plants topic in division Biosignalling of Biochemistry
Which of the following is involved in extrinsic cell death pathway?(a) Heterotrimeric G protein complex(b) TRADD(c) IRS-1(d) Protein-kinase AThe question was posed to me by my school teacher while I was bunking the class.My question is based upon Multivalent Scaffold Proteins and Membrane Rafts topic in chapter Biosignalling of Biochemistry
A hormone or ligand can be considered as ___________(a) First messenger(b) Second messenger(c) Third messenger(d) Fourth messengerThe question was posed to me in semester exam.This is a very interesting question from G Protein in section Biosignalling of Biochemistry
The binding of ligands to many GPCRs leads to ___________(a) Decrease in concentration of certain intracellular signal molecules called second messengers(b) Increase in concentration of certain intracellular signal molecules called second messengers(c) Decrease in concentration of certain extracellular signal molecules called first messengers(d) Increase in concentration of certain extracellular signal molecules called first messengersI have been asked this question in an online quiz.This interesting question is from G Protein in section Biosignalling of Biochemistry
Nicotinic acetylcholine receptor is an example of _____________(a) Ligated gated receptor channel(b) Serpentine receptors(c) Adhesion receptors(d) Receptor enzymesI had been asked this question in unit test.This intriguing question originated from Gated Ion Channels topic in chapter Biosignalling of Biochemistry
Proto-oncogenes can be transformed to oncogenes by all of the following mechanisms except _____________(a) Elimination of their start signals for translation(b) During a viral infection cycle(c) Chromosomal rearrangements(d) Chemically induced mutagenesisThis question was addressed to me in an interview for job.This intriguing question originated from Oncogenes, Tumor Suppressor Genes and Programmed Cell Death topic in portion Biosignalling of Biochemistry
Which out of the following statements about sense of smell is not true?(a) Olfactory receptor cells are bipolar neurons, not replaced when damaged(b) The chemicals are received by specific plasma membrane receptors in olfactory receptor cells(c) Olfactory receptors do not adapt quickly(d) The main areas of brain that interpret sense of smell be in the temporal and frontal lobesI got this question by my school teacher while I was bunking the class.Enquiry is from Sensory Transduction in Vision, Olfaction and Gustation in division Biosignalling of Biochemistry
Plasma membrane protein predicted to have seen 7 transmembrane helices segment binds __________(a) Progesterone(b) Thyroid stimulating hormone(c) Insulin(d) Follicle stimulating hormoneI have been asked this question in class test.The query is from Regulation of Transcription by Steroid Hormones in portion Biosignalling of Biochemistry

At which cell cycle checkpoint, cell cycle is halted if cell’s DNA is damaged?(a) G1 – S(b) S – G2(c) G2 – M(d) G0 – G1I got this question during an interview.Asked question is from Regulation of the Cell Cycle by Protein Kinases topic in division Biosignalling of Biochemistry

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment