WHAT IS LIFE? A GUIDE TO BIO 3E+LAUNCHPA
3rd Edition
ISBN: 9781319103316
Author: PHELAN
Publisher: Macmillan Higher Education
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Chapter 5, Problem 10MC
Summary Introduction
Introduction:
Mutations are changes in the sequence of nitrogenous bases in DNA.
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Which of the following terms refer to the case when a mutation results in a significant decrease or a complete loss of the functional activity of a gene product?
a. gain-of-function mutation
b. loss-of-function mutation
Which of the following is NOT true about mutations?
A. Mutations can be harmful but not beneficial to the cell
B. Nucleotide substitution in DNA can cause nonsense mutations
C. Nucleotide substitution in DNA can cause missense mutations
D. Mutagens increase the rate of mutation, but mutations are still random
E. Nucleotide insertion or deletion in DNA can cause frameshift mutations
Which of the following statements about genes is incorrect?
Select one:
O a. During fertilization, both the sperm and the ovum contribute genes to the resulting fertilized egg.
b. Genetic differences can result from changes in the DNA called mutations.
O c. Genes correspond to segments of DNA.
d. Under normal circumstances, each chromosome contains precisely one gene.
e. Many genes contain the information needed for cells to synthesize enzymes and other proteins.
Chapter 5 Solutions
WHAT IS LIFE? A GUIDE TO BIO 3E+LAUNCHPA
Ch. 5 - Prob. 1SACh. 5 - Prob. 2SACh. 5 - Prob. 3SACh. 5 - Prob. 4SACh. 5 - Prob. 5SACh. 5 - Prob. 6SACh. 5 - Prob. 7SACh. 5 - Prob. 8SACh. 5 - Prob. 9SACh. 5 - Prob. 10SA
Ch. 5 - Prob. 11SACh. 5 - Prob. 12SACh. 5 - Prob. 13SACh. 5 - Prob. 14SACh. 5 - Prob. 15SACh. 5 - Prob. 1MCCh. 5 - Prob. 2MCCh. 5 - Prob. 3MCCh. 5 - Prob. 4MCCh. 5 - Prob. 5MCCh. 5 - Prob. 6MCCh. 5 - Prob. 7MCCh. 5 - Prob. 8MCCh. 5 - Prob. 9MCCh. 5 - Prob. 10MCCh. 5 - Prob. 11MCCh. 5 - Prob. 12MCCh. 5 - Prob. 13MCCh. 5 - Prob. 14MCCh. 5 - Prob. 15MCCh. 5 - Prob. 16MCCh. 5 - Prob. 17MC
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- Which of the following statements best describes the outcome of a mutation? a. A mutation always results in a mutant genotype b. A mutation always results in a mutant karyotype c. A mutation always results in a mutant phenotype d. A mutation always results in a mutant proteinarrow_forwardWhich of the following is true about the enzyme telomerase? A. It is found only in adult cells. B. It is responsible for telomere shortening. C. It can re-establish telomere length. D. It may speed up the aging process. E. It is expressed at low levels in cancer cells.arrow_forward18) MUTATIONS: A. Explain the difference between a point mutation and a frameshift mutation. B. Explain how the mutation (both a point mutation and frameshift mutation) might impact the production of proteins. C. Name one type of chromosome mutation and explain what it is.arrow_forward
- Which statement(s) below regarding DNA mutations is true: A. Mutations only occur in genes B. Mutations always result in phenotypic alterations C. Mutations are only induced by extrinsic (environmental) factors D. Mutations can occur in promoters E. Point mutations can be caused by transposons or “jumping genes”arrow_forwardA.) There is no change in the DNA sequence if nucleotides are added or removed, it will have no effect to the cell. B.) Mutations in the DNA sequence are all irreversible. A. Statement A is correct B. Statement B is correct C. Both A and B are correct D. Both A and B are incorrectarrow_forwardWith regard to human cancer cells, which of the following statements is true? A. Cancer cells within one tumor usually do not share common mutations B. Cancer cells generally have lost the ability to divide C. Oncogenes are non-human genes not related to normal genes in the human genome D. Mutations in DNA repair genes result in an increased chance of getting cancer.arrow_forward
- When using gene therapy to treat an hereditary disease, the idea is to: A. Introduce the correct gene into the patient's DNA B. Inject the patient with a specific protein to cure the disease. C. Blood transfusions from healthy individuals. D. ntroduce mRNA molecules with the correct genetic information to the patient. E. Introduce a virus to the patient that will specifically destroy mutated cells.arrow_forwardNonsense mutations occur when: A.The new codon causes an incorrect amino acid to code for an incorrect protein B.The loss or gain of 1 or 2 nucleotides that affects the coding for a protein. C.An alteration in sequence results in a new codon that causes the code to create an incomplete protein. D.Chromosomes break, causing a loss of DNA E.Genes in chromosome mutate and code for incorrect DNAarrow_forwardA genetic researcher notices that individuals with a particular genetic disease have a shortened version of key protein involved in the diseased biochemical pathway. Which of the following mutations is most likely to result in the premature termination of protein synthesis? A. The disease is caused by a silent mutation. B. The disease is caused by a frameshift mutation. C. The disease is caused by a missense mutation. D. The disease is caused by a nonsense mutation.arrow_forward
- For each statement below indicate whether it is true or false: A. Strand discrimination during the process of DNA repair is based on DNA methylation B. The genetic code has 64 amino acid-specifying codons C. Mutations in germline cells are more consequential to subsequent generations than mutations in somatic cells.arrow_forwardAccording to our class discussions, which of the following is the most correct definition of a mutation? a. A permanent, heritable change in DNA base sequence b. Changes in the form of DNA packaging used in the nucleus C. Damage to DNA caused by random chemical reactions inside cells d. Damage to DNA bases caused by environmental factors, such as UV light or cigarette smokearrow_forwardA.) DNA encodes for the cell genome and is therefore a permanent copy to have a functioning cell. B.)Different changes to the structure of messenger RNA can cause mutations and genomic instability which could lead to abnormal cells in the body. a. Statement A is correct b. Statement B is correct c. Both A and B are correct d. Both A and B are incorrectarrow_forward
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