Podcast
Questions and Answers
What is the primary function of mRNA in protein synthesis?
What is the primary function of mRNA in protein synthesis?
- Transporting specific amino acids to the ribosome
- Translating tRNA into proteins
- Replicating DNA sequences
- Carrying the genetic code from DNA to the ribosome (correct)
If a mutation occurs where one nitrogenous base is replaced by another in a DNA sequence, this is known as what type of mutation?
If a mutation occurs where one nitrogenous base is replaced by another in a DNA sequence, this is known as what type of mutation?
- Deletion
- Insertion
- Substitution (correct)
- Translocation
During DNA replication, which enzyme is primarily responsible for proofreading and correcting errors in the newly synthesized DNA strand?
During DNA replication, which enzyme is primarily responsible for proofreading and correcting errors in the newly synthesized DNA strand?
- Primase
- DNA polymerase (correct)
- Helicase
- Ligase
What is the role of tRNA in the process of translation?
What is the role of tRNA in the process of translation?
Which of the following is a characteristic of RNA but NOT of DNA?
Which of the following is a characteristic of RNA but NOT of DNA?
In what part of the cell does translation occur?
In what part of the cell does translation occur?
Which of the following describes a deletion mutation?
Which of the following describes a deletion mutation?
Adenine always pairs with which nitrogenous base?
Adenine always pairs with which nitrogenous base?
What is the purpose of transcription?
What is the purpose of transcription?
Which of the following defines a nucleotide?
Which of the following defines a nucleotide?
Which of the following is NOT a component of a nucleotide?
Which of the following is NOT a component of a nucleotide?
If a strand of DNA has the sequence 5'-GATTACA-3', what would be the sequence of its complementary strand?
If a strand of DNA has the sequence 5'-GATTACA-3', what would be the sequence of its complementary strand?
Which type of RNA carries specific amino acids to the ribosome during protein synthesis?
Which type of RNA carries specific amino acids to the ribosome during protein synthesis?
Which base sequence represents the anticodon?
Which base sequence represents the anticodon?
Which nitrogenous base is typically found in RNA but not in DNA?
Which nitrogenous base is typically found in RNA but not in DNA?
Which statement accurately describes the role of rRNA?
Which statement accurately describes the role of rRNA?
Assuming the typical base pairing rules, how would guanine pair?
Assuming the typical base pairing rules, how would guanine pair?
Which statement accurately describes replication?
Which statement accurately describes replication?
Which process results in mRNA?
Which process results in mRNA?
If a DNA sequence undergoes an insertion mutation, what can be expected?
If a DNA sequence undergoes an insertion mutation, what can be expected?
An experiment shows that proteins are made of what types of material?
An experiment shows that proteins are made of what types of material?
Which statement accurately describes mutation?
Which statement accurately describes mutation?
How many mRNA codons are there?
How many mRNA codons are there?
If the DNA sequence 'ATT' became 'ATC,' what type of mutation occurred?
If the DNA sequence 'ATT' became 'ATC,' what type of mutation occurred?
If you want to explain to a student the function of RNA, which statement is most accurate?
If you want to explain to a student the function of RNA, which statement is most accurate?
Following mutation, if one nitrogenous base is replaced with another, what is that called?
Following mutation, if one nitrogenous base is replaced with another, what is that called?
Which molecule stores an organism's genetic information?
Which molecule stores an organism's genetic information?
Where does translation typically occur in a cell?
Where does translation typically occur in a cell?
Which sequence is involved in base pairing?
Which sequence is involved in base pairing?
If you add one or more nitrogenous bases to the DNA, what is that process called?
If you add one or more nitrogenous bases to the DNA, what is that process called?
Which of the following is NOT involved in protein synthesis?
Which of the following is NOT involved in protein synthesis?
Which process involves making proteins from RNA?
Which process involves making proteins from RNA?
How do nitrogenous bases attach?
How do nitrogenous bases attach?
Which of these statements defines 'replication'?
Which of these statements defines 'replication'?
What makes up a nucleotide?
What makes up a nucleotide?
If you remove a nitrogen base, what type of mutation is that?
If you remove a nitrogen base, what type of mutation is that?
What would the anticodon pair with in the mRNA?
What would the anticodon pair with in the mRNA?
Flashcards
DNA
DNA
Organism's genetic material, contains instructions for development and function.
Nucleotide
Nucleotide
Molecule made of a nitrogenous base, a sugar, and a phosphate group.
Replication
Replication
Process of copying a DNA molecule to make another one.
RNA
RNA
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Transcription
Transcription
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Translation
Translation
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Mutation
Mutation
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Substitution (mutation)
Substitution (mutation)
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Insertion (mutation)
Insertion (mutation)
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Deletion (mutation)
Deletion (mutation)
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Anticodon
Anticodon
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Cytoplasm
Cytoplasm
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mRNA
mRNA
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rRNA
rRNA
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tRNA
tRNA
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Components of a nucleotide
Components of a nucleotide
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Base Pairing: A-T
Base Pairing: A-T
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Base Pairing: C-G
Base Pairing: C-G
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Study Notes
- DNA is an organism's genetic material.
- A nucleotide is a molecule made of a nitrogenous base, a sugar, and a phosphate group.
- Replication is the process of copying a DNA molecule to make another one.
- RNA is a type of nucleic acid that carries the code for making proteins.
- Transcription is the process of making mRNA from DNA.
- It's the first step in making protein.
- Translation is the process of making a protein from RNA.
- Mutation is a change in the nucleotide sequence of a gene.
Types of Mutations
- Substitution: one nitrogen base is replaced with another.
- Insertion: one or more nitrogenous bases are added to the DNA.
- Deletion: one or more nitrogen bases are left out of the DNA sequence.
- Three nitrogenous bases on tRNA are called anticodons.
- Translation occurs in the cytoplasm.
- Proteins are made of amino acids.
- There are 64 codons but only 20 amino acids.
Types of RNA
- mRNA carries the genetic code from DNA to the ribosome.
- rRNA translates mRNA into proteins.
- tRNA carries specific amino acids to the ribosome.
Components of a Nucleotide
- Nitrogenous base (A-T, C-G).
- Sugar
- Phosphate group
Base Pairing Rules
- Adenine pairs with Thymine.
- Thymine pairs with Adenine.
- Cytosine pairs with Guanine.
- Guanine pairs with Cytosine.
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