Unit 5 DNA and Protein Synthesis

What scientist produced the first image of DNA using x-ray technology but didn't get credit for the discovery?

• Erwin Chargaff

• Rosalind Franklin

• James Watson

• Francis Crick

What is a codon?

• a sequence of 3 amino acids
• a sequence of three nitrogen bases
• a sequence of 3 enzymes
• a sequence of 3 proteins

The DNA nucleotide is composed of three parts. Which two components make up the nucleotide backbone?

• ribose sugar and base
• ribose sugar and phosphate group
• nitrogen base and deoxyribose sugar
• deoxyribose sugar and phosphate group
  

Which type of RNA delivers the genetic code to the ribosome?

• tRNA
• mRNA
• rRNA
• tmRtmRNA

What is the function of transfer RNA?

• It is a part of the ribosome.
• It bonds to other RNA molecules, leading to their destruction.
  
• It delivers the correct amino acid to the ribosome.
• It carries the information coding for the amino acid sequence of a protein.

Which nucleotide is complementary to adenine?

• adenine
• thymine
• cytosine
• guanine

DNA codes for __________ which determine ___________

• mRNA, tRNA
• mRNA, ribosomes
• proteins. traits
• proteins, peptide bonds

Tags

NGSS.HS-LS1-1

Which correctly outlined the central dogma

• DNA --> mRNA --> rRNA
• DNA --> tRNA --> protein
• DNA --> mRNA --> protein
• DNA --> amino acid --> protein

The drawing shows the structure of what molecule?

• A DNA molecule
• A lipid molecule
• A carbohydrate molecule
• A protein molecule

Translate the following into AA:

GGA CUG AAA

• Glu, Lys, STOP

• Gly, Leu, Lys

• Lys, Leu, Arg

• Gly, His, Pro