Protein Synthesis and mutations 2025

Which conclusion is best supported by the presence of ribosomes in prokaryotes and eukaryotes?

• Ribosomes have different functions in prokaryotes and eukaryotes .
• Both prokaryotes and eukaryotes store energy to power life functions .
• Ribosomes developed independently inside prokaryotes and eukaryotes .
• Both prokaryotes and eukaryotes make proteins to perform life functions .

Tags

NGSS.HS-LS2-3

A student develops a model to show how DNA and proteins are related. Which sequence correctly completes the model to show the protein synthesis process? DNA sequence -->?-->?-->?-->protein

• amino acid sequence ➞ tRNA sequence ➞ mRNA sequence
• tRNA sequence ➞ mRNA sequence ➞ amino acid sequence
• mRNA sequence ➞ tRNA sequence ➞ amino acid sequence
• mRNA sequence ➞ amino acid sequence ➞ tRNA sequence

Tags

NGSS.HS-LS1-1

Which sequence represents the process by which snake venoms are most likely formed?

• protein molecules from prey are broken down and used to form sugars. Sugars form amino acids in the venom.
• sugar molecules from prey are broken down and used to form proteins. Proteins form amino acids in the venom.
• sugar molecules from prey are broken down and used to form amino acids. Amino acids form proteins in the venom.
• Protein molecules from prey are broken down and used to form amino acids. Amino acids form sugars in the venom.

Tags

NGSS.HS-LS1-6

Which genetic mutation is shown in the diagram?

• a point mutation caused by a base deletion
• a point mutation caused by a base substitution
• a frameshift mutation caused by a base insertion
• a frameshift mutation caused by a base substitution

Tags

NGSS.HS-LS3-2

A scientist wants to make a change to a genetic code that will lead to the removal of one amino acid from the sequence of a protein . Which genetic material should the scientist remove?

• three genes
• three alleles
• three nucleotides
• three chromosomes

Tags

NGSS.HS-LS1-1

Which sequence of events correctly describes the process of protein synthesis?

• DNA --> transcription -->mRNA --> translation --> proteins produced
• DNA -->translation -->mRNA --> transcription --> proteins produced
• mRNA -->transcription -->polypeptides form --> translation -->proteins produced
• mRNA -->translation -->polypeptides form -->transcription -->proteins produced

Tags

NGSS.HS-LS1-1

A mutation present in a parent’s genetic code impacts offspring . Which statement most likely describes the mutation?

• The mutation can be recognized and repaired by enzymes .
• The mutation is observed in the somatic cells of the parent .
• The mutation changes a base without changing an amino acid .
• The mutation alters the function of the protein made by the gene .

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-1

A gene is composed of 300 nucleotides. How many amino acids will the protein have?

Tags

NGSS.HS-LS1-1

What is the monomer of a protein called?

Tags

NGSS.HS-LS1-6

DNA's instructions are found in the __________________ of the cell. Messenger RNA copies the instructions and travels to the _________________________ to make the protein.

• ribosome, nucleus
• nucleus, ribosome
• nucleus, mitochondria
• mitochondria, chloroplast

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-6