DNA and protines
Which of the following is most likely to result from a change in the sequence of nucleotides within DNA?
A change in the amino acid sequence of the polypeptide chain
Information in mRNA is read as a series of triplets called _____, which are collectively referred to as the genetic code.
Codons
Within the cell, the information needed to make proteins is stored within______
DNA
Within the cell, gene expression follows a certain patterned order. What is that pattern?
DNA; RNA; protein
Complete the following sentence: Within our cells, _____ stores the instructions for making _____.
DNA; proteins
Which of the following best states the role of the genetic code?
It is used to translate mRNA codons into amino acids.
Which of the following best explains how mutations cause changes to protein structure?
Mutations in DNA mean that the instructions for making proteins are changed, possibly resulting in different proteins being synthesized.
Which of the following best describes the overall goal of translation?
The goal of translation is to take information in the form of an RNA intermediary and translate it into a polypeptide chain.
Which of the following best describes the fate of information contained within a gene?
The information within genes can be used as instructions for making proteins through the processes of transcription and translation.
Which of the following best states the overall goal of gene expression?
To take the genetic information within DNA and use it to create a protein or other gene product
Which of the following best describes the overall goal of transcription?
Transcription creates an mRNA copy of a gene, allowing that information to be transported to the cytoplasm to be turned into a protein or other gene product.
Which of the following best describes the role of transcription in the cell?
Transcription creates an mRNA copy of a gene, allowing that information to be transported to the cytoplasm to be turned into a protein or other gene product.
Select two of the following challenges that transcription must overcome.
Transferring information from within the nucleus to the ribosomes that exist outside of the nucleus Converting the instructions within DNA into an RNA copy that can be read by ribosomes
The process of translating information from mRNA molecules into functional proteins is called_______
Translation
Which of the following statements is true regarding the role of translation within the cell?
Translation is the second step of gene expression and involves the production of a polypeptide chain.
Which of the following best explains the role of translation in cells?
Translation takes genetic information in the form of an RNA intermediary and translates it into a polypeptide chain. It is the second step in gene expression.
Which of the following best summarizes the process of transcription? Multiple choice question.
Within the nucleus of the cell, a copy of mRNA is made from a gene within a strand of DNA.
Complete the following sentence. The overall goal of transcription is to:
convert the genetic information within DNA to an intermediary RNA molecule.
When mutations occur, they change the sequence of _______ within DNA.
nucleotides
In the genetic code, _____ codons initiate the translation process and _____ codons terminate the translation process.
start; stop
The role of transcription in cells is to
take the information stored within DNA and convert it into an mRNA copy that can be used outside the nucleus.
Transcription can best be defined as
the process of creating a RNA intermediary in order to transport genetic information from the DNA of the nucleus to the ribosomes of the cytoplasm.
Translation is best defined as
the process of translating information within a mRNA molecule into a functional protein molecule.
The overall goal of translation is
the production of a polypeptide chain.
The process of making an intermediary RNA copy of a gene is called_______
transcription
