BIOL1107 LECTURE 19 CLASS ACTIVITY | CHAPTER 14: DNADAMAGE AND REPAIR | 100 % CORRECT (2026/2027)

BIOL1107 Lecture 19 Class activity Chapter 14: DNA
Damage and Repair




BIOL1107 LECTURE 19 CLASS
ACTIVITY
CHAPTER 14: DNADAMAGE AND
REPAIR | 100 % CORRECT
(2026/2027)
Study Ace Smart




JUNE 7, 2025


0

, BIOL1107 Lecture 19 Class activity Chapter 14: DNA
Damage and Repair




DNA DAMAGE AND REPAIR
KNOWLEDGE OBJECTIVES
1. Describe the effects of small-scale mutations
2. Describe how mutations occur and how DNA damage is repaired.


Questions
Use complete sentences to answer the questions below and/or select the best answer.

1. Complete the table


Mutations in a protein Effect: harmful, beneficial, or neutral
Nonsynonymous mutations alter a codonso that the result is a sing
Nonsynonymous replacement in a protein; they mayaffect protein function if the new causes
misfolding or impairsinteractions with other molecule of nonsynonymous mu
areusually harmful, but can occasion
Synonymous beneficial
Synonymous mutations produce a codonthat enco am
acid as thenonmutant. These mutations are
Nonsense Nonsense mutations result in stop codons that
terminate polypeptide



elongation; they are typically harmful.
1


2. Which of the answer choices is most likely to result in a nonfunctional polypeptide?
A. a silent mutation
B. a missense mutation
C. a nonsense mutation

3. Single-stranded DNA breaks are more harmful to an organism than double-stranded DNA breaks.
A. true




1