Gene Regulation and Development Quiz

What is the default state of a repressible operon?

• Inactive

• Partially on

• Off

• On

Which of the following is an example of an inducible operon?

• Trp Operon

• Arg Operon

• Lac Operon

• His Operon

What role does the operator play in an operon?

• Encodes structural genes

• Acts as a switch to regulate transcription

• Binds RNA polymerase

• Produces repressor proteins

Which process involves the removal of introns and joining of exons?

• Capping

• Polyadenylation

• Splicing

• Methylation

What is the function of histone acetyltransferases (HATs)?

• Condense chromatin

• Loosen chromatin

• Methylate DNA

• Remove acetyl groups

Which type of chromatin is highly condensed and inaccessible?

• Euchromatin

• Heterochromatin

• Nucleosome

• Chromatid

What is the purpose of the Trp operon?

• Synthesis of glucose

• Degradation of proteins

• Synthesis of tryptophan

• Breakdown of lactose

Which of the following is a key stage in embryonic development?

• Translation

• Cell Division

• Transcription

• RNA Processing

Tags

NGSS.HS-LS1-4

What is the role of cytoplasmic determinants in development?

• Bind to enhancers

• Evenly distribute molecules

• Act as transcription factors

• Inhibit gene expression

Tags

NGSS.HS-LS1-4

What is the function of specific transcription factors?

• Bind to all promoters

• Bind to control elements unique to certain cell types

• Inhibit RNA polymerase

• Methylate histones