Podcast
Questions and Answers
The sequence of amino acids in a protein is referred to as its primary structure.
The sequence of amino acids in a protein is referred to as its primary structure.
True (A)
Regardless of the amino acid to be bound to a tRNA molecule, all tRNA molecules use the same sequence at their 3' end to serve as the amino acid attachment site.
Regardless of the amino acid to be bound to a tRNA molecule, all tRNA molecules use the same sequence at their 3' end to serve as the amino acid attachment site.
True (A)
Which is a function of the signal-recognition particle (SRP)?
Which is a function of the signal-recognition particle (SRP)?
- The SRP binds to the SRP receptor on the rough endoplasmic reticulum. (correct)
- The SRP speeds up translation.
- The SRP binds to sugars added to proteins in the Golgi apparatus.
- The SRP direct proteins to the nuclear pores of the nuclear envelope.
Structurally and functionally related groups of proteins are referred to as:
Structurally and functionally related groups of proteins are referred to as:
Which one of the statements about translation in eukaryotes is correct?
Which one of the statements about translation in eukaryotes is correct?
Some enzymes are translated in the cytosol but remain inactive until they are phosphorylated by another enzyme, a kinase. Once they are phosphorylated, these enzymes become active. The phosphorylation of the enzyme would be considered a posttranslational modification.
Some enzymes are translated in the cytosol but remain inactive until they are phosphorylated by another enzyme, a kinase. Once they are phosphorylated, these enzymes become active. The phosphorylation of the enzyme would be considered a posttranslational modification.
There is approximately the same number of protein families as there are folding domains.
There is approximately the same number of protein families as there are folding domains.
The tRNA that binds the start codon has the sequence ______ at its ______.
The tRNA that binds the start codon has the sequence ______ at its ______.
Flashcards
Primary protein structure
Primary protein structure
The sequence of amino acids in a protein.
tRNA amino acid attachment site
tRNA amino acid attachment site
Specific 3' end sequence on all tRNA molecules.
Signal-recognition particle (SRP) function
Signal-recognition particle (SRP) function
Directs proteins to the endoplasmic reticulum.
Protein families
Protein families
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Eukaryotic translation initiation
Eukaryotic translation initiation
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Posttranslational modification
Posttranslational modification
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Protein families vs. folding domains
Protein families vs. folding domains
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tRNA start codon
tRNA start codon
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Primary protein structure example
Primary protein structure example
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tRNA - amino acid binding
tRNA - amino acid binding
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SRP function specifics
SRP function specifics
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Protein families - example
Protein families - example
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Eukaryotic translation - mRNA processing
Eukaryotic translation - mRNA processing
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Post-translational enzyme activation
Post-translational enzyme activation
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Protein folding domains
Protein folding domains
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tRNA start codon sequence
tRNA start codon sequence
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mRNA 5' cap role
mRNA 5' cap role
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What are Protein families?
What are Protein families?
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Study Notes
Biology 1050 Final Exam (2023FA)
- The sequence of amino acids in a protein is called its primary structure.
- All tRNA molecules use the same 3' end as the amino acid attachment site, regardless of the amino acid.
- The signal-recognition particle (SRP) directs proteins to the rough endoplasmic reticulum.
Protein Related Groups
- Structurally and functionally related proteins are called families.
Translation in Eukaryotes
- An initiation complex recognizes the 5' cap structure and scans for the first AUG triplet.
- Translation continues until the ribosome reaches the end of the mRNA.
- There is an untranslated region at the 3' end of mRNA.
Post-translational Modification
- Some enzymes are translated in the cytosol and remain inactive until they are phosphorylated by a kinase.
- Phosphorylation of an enzyme is a post-translational modification.
Protein Families and Folding Domains
- There are approximately the same number of protein families as folding domains.
tRNA Sequence
- The tRNA that binds the start codon has the sequence 5'-AUG-3' as an anticodon.
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Description
Prepare for your Biology 1050 final exam with this comprehensive review quiz. It covers key concepts such as protein structure, translation in eukaryotes, and post-translational modifications. Test your knowledge and ensure you're ready for the exam!
