Which of the following is not true regarding cace Changes that occur within the

Question

Which of the following is not true regarding cace Changes that occur within the DNA sequence. ONA methylation influences gene expression at are passed from parent generation to daugter gerenidios d. Histone modification Methylation decreases gene expression by blocking the activator bindaeg sequences. ical component of grapes that may be involved in epigenetic changes is called a. caffeic acid b. resveratrol c. curcumin d. isothiocyanate Which orgaism discussed in the textbook that offers a mechanism to deliaer radioisotopes directly into cancer cells? a. Escherichia coli b. Listeria monocytogenes c. Staphylococcus aureus d. Lytic viruses e. Lysogenic viruses 19. 20. Which of the following is not involved in ceilular communication? a. pheromones b. local mediators c. hormones d. mRNA e. All of the above are involved in communication between cels. 21. How does signal transmission occur? a. phosphotransfer systems b. ion channel activation c. second messengers d. all of the above e none of the above Further Reading lilmaña J, Domchek, S. Tuti case of PARP inhibitors for BRCA/2-associaed cuxcers, Cor Disonery, 10 racing the cellular origin of cancer Nature Ce (2012). Dysregulation of microRNAs in cancer lumu of Bima Sie 19 90 & Mattarollo, S R (z).vetion and tveatment ofppillonnins.sdlaed canen )Paly ADP ribose) polywerase inbibiwes as caner ancrtheM., Tut, A, & Carber, I. E.(2011), Stumbing blocks on the path o andm llBiology, 15(2). 126- (2013). Tr S. Su, I.L & Hung M. C. (2012), -aps tion and treatment lough immunization. F, Leggatt, G. R., & Mattarollo tion, Annual Review of Immunolagy 23 cancer genome Cel, 15y 17-37 from the cancer genome n Call Biky

Explanation / Answer

17. Option A is correct.

Epigenetic modifications do not involve changes in DNA sequence.

18. Option D is correct.

Isothiocyanate is the chemical component found in grapes that can cause epigenetic changes.

19. Option D is correct.

Lytic viruses are used to deliver radioisotopes into cancer cells

20. Option E is correct.

All the given components are involved in cellular communication.

21. Option D is correct.

Signal transmission can occur via phosphotransfer systems, ion channels, and second messengers.

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