DNA and RNA

Genes contain instructions for assembling

• operons

• chromatin

• protein

• mutagens

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-6

The genetic code in DNA is in the sequence of

• nitrogen bases

• hydrogen bonds

• sugars

• phosphate groups

One mRNA molecule carries the message of only one gene.

• This statement is True.

• This statement is False - change the underlined word to tRNA to make it true.

• This statement is False - change the underlined word to rRNA to make it true.

• This statement is False - change the underlined word to DNA to make it true.

The amino acids are carried by the rRNA.

• This statement is True.

• This statement is False - change the underlined word to mRNA.

• This statement is False - change the underlined word to tRNA.

• This statement is False - change the underlined word to DNA.

What is produced during transcription?

• mRNA

• DNA

• RNA Polymerase

• proteins

What happens during translation?

• Messenger RNA is made from a DNA code.

• The cell uses a messenger RNA code to make proteins.

• Transfer RNA is made from a messenger RNA code.

• Copies of DNA molecules are made.

The Figure shows the % of bases in a DNA sample. How much Thymine should you expect to find in the sample?

• 44%

• 28%

• 24%

• 22%

During DNA replication, a DNA strand that has the bases CTAGGT produces a complementary strand with the bases

• GAUCCA

• AGCTTG

• GATCCA

• TCGAAC

What is the shape of DNA?

• double helix

• triple helix

• complementary helix

• nitrogenous helix

Which scientist made x-ray diffraction photos of DNA?

• Franklin

• Wilkins

• Watson

• Crick