Genetics Unit: Section 13 Quiz

The process by which the genetic code of DNA is copied into a strand of RNA is called...

• translation

• transcription

• transformation

• replication

Which of the following describes RNA?

• RNA is usually double-stranded and contains the base thymine

• RNA is longer than DNA and uses five bases to encode information

• RNA is usually single-stranded and contains the base uracil

• RNA is made in the nucleus of eukaryotic cells and stays there to carry out its functions

What are portions that are cut out of the mRNA message and discarded?

• introns

• exons

• histones

• promoter

Regions of DNA that have specific base sequences...

• histones

• introns

• exons

• promoters

Tags

NGSS.HS-LS3-2

These pieces are spliced back together to form final mRNA?

• nitrogenous bases

• introns

• exons

• promoters

In messenger RNA, each codon specifies a particular...

• nucleotide

• enzyme

• amino acid

• promoter

Tags

NGSS.HS-LS1-6

The number of codons in the genetic code is...

• 3

• 4

• 20

• 64

Which of the following statements about the genetic code is true?

• Every codon specifies a different amino acid

• A codon can specify more than on amino acid

• Some codons specify the same amino acid

• Some codons have no function at all

The process of making proteins on the ribosomes based on instructions from messenger RNA is called...

• transcription

• transformation

• translation

• molecular biology

What is used to help read codons?

• Square of life

• DNA sequence

• Circle of life

• Ribosome reader