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WorksheetsReview #2 - RNA, Transcription, Translation
Total questions: 50
Worksheet time: 55mins
What is the main role of RNA in cells?
Energy storage
Genetic information transfer
Providing structure
Catalyzing reactions
Which molecule is classified as a type of RNA?
DNA
mRNA
Enzyme
Lipid
What type of sugar is present in RNA?
Deoxyribose
Ribose
Fructose
Glucose
Which nitrogenous base is unique to RNA?
Thymine
Adenine
Uracil
Cytosine
What is the typical structural form of RNA?
(a)
What type of RNA is responsible for carrying amino acids to the ribosome?
mRNA
tRNA
rRNA
snRNA
What is the full name of rRNA?
Ribosomal RNA
Recombinant RNA
Regulated RNA
Reverse RNA
What does mRNA primarily do?
Transport amino acids
Transfer genetic code from DNA
Assemble ribosomes
Catalyze biochemical reactions
Which pair correctly matches a nitrogenous base with its complement in RNA?
Adenine - Thymine
Cytosine - Guanine
Uracil - Adenine
Thymine - Cytosine
What is the purpose of a codon in mRNA?
Stabilizes RNA structure
Determines amino acid sequence
Initiates the transcription process
Prevents genetic errors
In which part of the cell does transcription take place in eukaryotes?
Cytoplasm
Nucleus
Ribosome
Mitochondria
Which enzyme synthesizes RNA during the transcription phase?
DNA polymerase
RNA polymerase
Ligase
Helicase
What serves as the template for the synthesis of mRNA?
tRNA
rRNA
DNA
Protein
What is the initial step in the transcription process?
Elongation
Termination
Initiation
What is produced as a result of transcription?
DNA
Protein
mRNA
tRNA
What indicates the termination of transcription?
Promoter
Terminator sequence
Ribosome
Codon
Which of the following is NOT necessary for transcription?
RNA polymerase
Ribosomes
DNA template
Nucleotide triphosphates
How does RNA differ from DNA structurally during transcription?
RNA contains ribose, DNA contains deoxyribose
RNA is double-stranded, DNA is single-stranded
RNA has thymine, DNA has uracil
RNA has fewer nucleotides
In the context of mRNA, what does splicing refer to?
Adding a cap
Removing introns
Adding a tail
Replicating DNA
What is the function of the 5' cap and poly-A tail in eukaryotic mRNA?
To regulate transcription
To protect mRNA and facilitate translation
To splice introns
To signal the end of translation
Where does the translation process occur in the cell?
Nucleus
Cytoplasm
Mitochondria
Golgi apparatus
What is the ribosome's primary role during translation?
To synthesize mRNA
To interpret mRNA into proteins
To splice RNA
To replicate DNA
What is an anticodon?
A sequence of DNA
A sequence of mRNA
A tRNA sequence that pairs with mRNA
Which of the following codons serves as the start codon?
UAA
AUG
UAG
GUA
What does tRNA transport to the ribosome?
mRNA
Amino acids
Ribosomal RNA
DNA
Which amino acid is always the first in a newly formed polypeptide chain?
Met
Ala
Ser
Gly
The sequence of nucleotides in mRNA is translated into which of the following?
DNA
Amino acids
tRNA
RNA
How many nucleotides comprise a single codon?
One
Two
Three
Four
What indicates the conclusion of the translation process?
Start codon
Stop codon
Promoter
Terminator
Which of the following is NOT classified as a stop codon?
UAA
UAG
UGA
AUG
What amino acid does the codon UUU specify?
Leu
Phe
Met
Ser
If the mRNA codon is ACG, what amino acid does it encode?
Thr
Ala
Gly
Tor
What amino acid is represented by the codon GGC?
Gly
Glu
Asp
Arg
If the mRNA sequence is UAC, which amino acid is specified?
Tyr
Trp
Cys
Ser
What is the amino acid corresponding to the codon CCA?
Pro
Leu
Ser
His
Which codon is associated with Methionine?
AUG
UGG
GUG
CUG
For the codon AUA, which amino acid is produced?
Iso
Ala
Ser
Val
Using the codon table, what amino acid does UGG code for?
Trp
Tyr
Glu
Cys
If the mRNA codon is UAU, which amino acid does it indicate?
Tyr
Asp
Ser
Glu
Why is the sequence of transcription and translation crucial?
To ensure proper protein folding
To accurately express genes
To maintain cell structure
To ensure polymorphisms occur
What is the function of the small subunit in the ribosome?
To synthesize amino acids
To bind mRNA
To add amino acids
To release proteins
During elongation in translation, what occurs?
Ribosome assembles
Amino acids are joined together
mRNA is synthesized
Introns are removed
Which of the following is responsible for forming peptide bonds between the amino acids eventually resulting in a polypeptide?
Ribosomal RNA
mRNA
tRNA
Enzymes
When a cell is synthesizing a protein, which molecule contains the instructions?
DNA
tRNA
mRNA
rRNA
What is the process of translating mRNA into a protein called?
Replication
Transcription
Translation
Transformation
Which molecule serves as the adapter between mRNA and amino acids?
rRNA
mRNA
tRNA
DNA
What is the role of the large subunit of the ribosome?
To read mRNA
To facilitate peptide bond formation
To exit the nucleus
To produce rRNA
What does it mean that the genetic code is "redundant"?
Multiple codons can specify the same amino acid
Genes can be expressed in different forms
RNA can be synthesized in various ways
Even an ignorant person can do it.
Which of the following statements is true?
Multiple codons can specify the same amino acid
Each codon specifies a different amino acid
Codons are not related to amino acids
Proteins can have multiple roles
Which process directly follows transcription in eukaryotic cells?
Translation
DNA replication
RNA splicing
Protein folding
