Exam 1: BIOS242 / BIOS 242 (Latest Update 2025 / 2026) Fundamentals of Microbiology with Lab | Questions and Answers | Grade A | 100% Correct - Chamberlain

Exam 1: BIOS242 / BIOS 242 (Latest
Update ) Fundamentals
of Microbiology with Lab | Questions
and Answers | Grade A | 100%
Correct - Chamberlain


Question:
are Genes That Can Move From One Part of the Genome to Another
"Jumping genes"
From chromosome to chromosome From a chromosome to a plasmid From a
plasmid to a chromosome
Answer:
Transposons




Question:
A random change in the DNA arising from errors in replication that occur
randomly
Answer:
Spontaneous mutation

,Question:
Result from exposure to known physical or chemical agents that damage DNA
(known as mutagens)
Answer:
Induced mutation




Question:
Causes cross-links between adjacent pyrimidines
Answer:
ultraviolet




Question:
Form free radicals that cause single or double breaks in DNA
Answer:
ionizing (gamma rays and X rays)




Question:
Small mutations that affect only a single base on a gene Involve addition,
deletion, or substitution of single bases
Answer:
point mutations

,Question:
Mutations that lead to cell dysfunction or death
Answer:
lethal mutation




Question:
Produce neither adverse nor helpful changes
Answer:
neutral mutation




Question:
Any change in the code that leads to the placement of a different amino acid
Answer:
missense mutation




Question:
Changes a normal codon into a stop codon
Answer:
nonsense mutation

, Question:
Alters a base but does not change the amino acid
Answer:
silent mutation




Question:
Frameshift mutation?
Answer:
Result in nonfunctional protein
Occurs when one or more bases are insert into or deleted from a new
synthesize dna strand
- do not disturb reading frame




Question:
Name 4 structures that are found in all bacteria types
Answer:
Cytoplasmic
Bacterial chromosome or nucleoid
Ribosomes
Cytoplasm