Which statement correctly describes transcription?
Answer and explanation
Correct answer: B. RNA polymerase copies one DNA strand into RNA
- Step 1: Transcription happens in the nucleus.
- Step 2: RNA polymerase builds a complementary RNA copy of the gene.
Answer
RNA polymerase copies one DNA strand into RNA.
Why not the others: Ribosomes make a protein using mRNA: this is translation. DNA is copied to make two identical molecules: this is replication. tRNA delivers amino acids to the ribosome: this is part of translation.
Practise more Cell Biology, Metabolism and Genetics.
Free questions with an explanation for every one, and full timed Scottish Highers mock tests.
More Cell Biology, Metabolism and Genetics questions
- Which molecule carries the genetic code in the nucleus of a human cell?
- What is the function of the enzyme DNA polymerase during replication?
- In the polymerase chain reaction, why is the DNA heated to about 95 degrees Celsius in the first stage?
- Which type of cell is described as pluripotent?
- Which statement about the structure of a eukaryotic gene is correct?
- A single mRNA can code for several different proteins in a eukaryotic cell. Which process explains this?