Exam 1: BIOS242 BIOS 242 Latest

Exam 1: BIOS242 / BIOS 242 (Latest

Update 2025 / 2026) 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

• / 4

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 2 / 4

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

• / 4

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

• / 4