SB2A

At the beginning of DNA replication, what happens to the two strands of original DNA?

• They are separated by breaking the hydrogen bonds between the nitrogen bases.

• They act as a template to build an mRNA strand.

• They are separated by breaking the nitrogen bonds between the hydrogen bases.

• They attract extra nitrogen bases to the nucleus to build a new strand of tRNA.

Which of the following accurately describes the two DNA molecules that are made after DNA replication?

• opposite

• identical

• inverse

• unable to replicate again

What process is represented by Process D?

• transcription

• translation

• DNA replication

• mRNA processing

Tags

NGSS.HS-LS1-1

What process makes an mRNA molecule?

• duplication

• translation

• transcription

• crystallography

Which letter represents amplitude? (a)  

• A

• B

• C

• D

• E

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-5

What term describes each combination of three nitrogen bases on an mRNA molecule?

• anticodon

• codon

• enzyme

• tRNA

Which of the following would NOT befound at the ribosome during protein synthesis?

• tRNA

• rRNA

• DNA

• mRNA

Which strand is transcribed?

• Strand A

• Strand B

Tags

NGSS.HS-LS1-1

What is the function of tRNA?

• carry the message from DNA to the ribosome

• bring amino acids to the ribosome

• create the structure of the ribosome

• store & transmit hereditary information

What does each codon in mRNA specify?

• A particular nucleotide

• a specific purine base

• a particular amino acid

• a general carbohydrate

Tags

NGSS.HS-LS1-6