Author Question: Brachytherapy is being used to treat cancer in a patient. What types of cancers respond well to ... (Read 67 times)

jparksx · **on:** Jun 25, 2018

Brachytherapy is being used to treat cancer in a patient. What types of cancers respond well to brachytherapy? (select all that apply)

a. Prostate
b. Cervix
c. Head
d. Neck
e. Lung

Question 2

Which genetic change causes alterations in only one or a few nucleotide bases?

a. Insertions
b. Deletions
c. Point mutations
d. Amplification mutations

Sweetkitty24130 · **Reply #1 on:** Jun 25, 2018

Answer to Question 1

ANS: A, B, C, D
Radiation sources can be temporarily placed into body cavities through a delivery method termed brachytherapy. Brachytherapy is useful in the treatment of cervical, prostate, and head and neck cancers. It is not used in the treatment of lung cancer.

Answer to Question 2

ANS: C
Genetic changes may occur by both mutational and epigenetic mechanisms. Mutation generally means an alteration in the DNA sequence affecting expression or function of a gene. Mutations include small-scale changes in DNA, such as point mutations, which are the alteration of one or a few nucleotide base pairs. The process involved with insertions, deletions, or amplification muta-tions is different.