10 Questions
Which process is primarily responsible for the lac operon in gene regulation?
Transcription of structural genes
In the absence of lactose, what state is the lac operon in?
Repressed
Which molecule acts as the inducer of the lac operon?
Lactose
Which enzyme is responsible for breaking down lactose in the lac operon?
Beta-galactosidase
Which part of the lac operon acts as an on/off switch for transcription?
Operator
Which enzyme is responsible for unwinding the DNA double helix during replication?
DNA helicase
During DNA synthesis, adenine (A) pairs with:
Thymine (T)
What is the primary enzyme responsible for DNA synthesis?
DNA polymerase
Which direction does DNA synthesis occur in?
5' to 3'
Which of the following is not required for DNA synthesis?
Ribosome
Test your knowledge on the regulation of gene expression with this practice quiz by Dr. Eman Ibrahim. Explore the lac operon and its role in gene regulation, including the transcription of structural genes. Challenge yourself with questions on DNA replication, protein translation, and cell division.
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