U3L5C Central Dogma

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.

Tags

NGSS.HS-LS1-1

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