Microbial Genetics

What is the smallest unit of heredity (genotype)?

• chromosome
• gene
• codon
• nucleotide

Tags

NGSS.HS-LS3-1

carries the codon

• mRNA

• tRNA

• rRNA

• promoter of the gene

Messenger RNA is formed by ______ of a gene on the DNA template strand.

• transcription
• replication
• translation
• transformation

Tags

NGSS.HS-LS1-1

The entire compliment of genes in an organism

• Gene

• Chromosome

• DNA

• Genome

A mutation that changes a normal codon to a stop codon is called a

• nonsense mutation.

• point mutation.

• silent mutation.

• missense mutation.

Tags

NGSS.HS-LS3-2

A permanent, inheritable change in the genetic information is called

• mutation.

• translation.

• transcription.

• alteration.

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-2

A three base sequence on mRNA is called a(n)

• codon.

• exon.

• anticodon.

• intron.

what is an operon?

• a part of a ribsome
• a part of a Rna
• a unit made up of linked genes that code for proteins needed to do a specific task
• needed for dna replication

What is the role of operons in prokaryote gene expression?

• It makes the genes prokaryotes be turned on
• It accounts for the regulation of gene activity in response to the needs of the cells
• To make DNA for the gene
• To make the gene turn of and off

Operons are found in the cells of which of the following types of organisms?

• prokaryotes (bacteria)
• eukaryotes (plant and animals)
• animals only
• viruses