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WorksheetsU3L5C Central Dogma
Total questions: 15
Worksheet time: 8mins
What is the first step of DNA replication?
Transcription
Translation
Helix unwinding
RNA processing
During transcription, which molecule is synthesized from the DNA template?
Protein
mRNA
tRNA
DNA
What is the role of mRNA in the process of translation?
It carries amino acids to the ribosome.
It replicates the DNA.
It provides the template for protein synthesis.
It adds nucleotides to the new DNA strand.
Which of the following is not a component of the genetic code?
Codons
Anticodons
Ribosomes
Nucleotides
What is the significance of the genetic code being described as 'universal'?
It is the same in all organisms.
It only applies to humans.
It varies greatly between different organisms.
It changes every generation.
Which enzyme is primarily responsible for DNA replication?
RNA polymerase
Helicase
DNA polymerase
Ligase
What is the function of tRNA during translation?
To replicate DNA
To carry amino acids to the ribosome
To transcribe mRNA
To unwind the DNA helix
In RNA processing, what is added to the 5' end of the pre-mRNA?
Poly-A tail
Amino acid
5' cap
Introns
Which of the following is a correct base pairing in DNA?
Adenine with Guanine
Cytosine with Adenine
Thymine with Adenine
Uracil with Thymine
How many nucleotides make up a codon?
2
3
4
5
What process removes introns from pre-mRNA to produce mature mRNA?
Translation
DNA replication
RNA splicing
Transcription
Which molecule is responsible for bringing the correct amino acid to the ribosome based on the codon sequence of the mRNA?
rRNA
mRNA
tRNA
DNA
What is the role of ribosomes in protein synthesis?
They replicate DNA.
They synthesize mRNA.
They join amino acids to form a polypeptide chain.
They modify mRNA after transcription.
Which of the following is not directly involved in the process of transcription?
DNA
RNA polymerase
Ribosomes
Nucleotides
What is the main purpose of DNA replication?
To produce different types of RNA
To create amino acids
To ensure each new cell has a complete set of DNA
To synthesize proteins
