Exam Review DNA and Protein Synthesis

What is a codon?

• a sequence of 3 amino acids

• a sequence of three nitrogen bases that name a particular amino acid

• 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
  

Tags

NGSS.MS-LS3-1

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

Which most directly affects the sequence of amino acids in a protein?

• the DNA in the nucleus of the cell
• the amino acids found in the cytoplasm
• the type of cell in which the protein is made
• the region of the cell in which the protein is made

Tags

NGSS.HS-LS1-1

How are the amino acids linked together during translation?

• by creating peptide bonds
• by creating hydrogen bonds
• by creating covalent bonds
• by creating phospate bonds

DNA codes for __________ which determine ___________

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

Tags

NGSS.HS-LS1-1

Which of the following best defines a gene?

• A diploid cell containing two sets of chromosomes
• A unit made up of chromosomes that control for a specific trait
• A segment of DNA that codes for a particular protein
• All the other answers are correct.

Tags

NGSS.HS-LS3-1

What is the difference between DNA and RNA

• DNA has uracil and RNA has thymine
• DNA is involved in transcription and RNA is involved in translation
• DNA contains thymine and RNA contains uracil
• DNA is made of nucleotides and RNA is not

What will be the resulting mRNA from this DNA sequence:
GAT-TAC-AGA-TTA-CAT?

• CTA-ATG-TCT-AAT-GTA
• GAU-UAG-UGA-UUA-GUT
• CUA-AUG-UCU-AAU-GUA
• CAT-ACA-TAC-ATA-TAG
  

Tags

NGSS.HS-LS1-1