BL 150 Final Exam

Front

What is DNA fingerprinting?

Back

DNA fingerprinting is a method used to distinguish individuals based on the unique number and pattern of tandem repeats in their DNA, which can be visualized through gel electrophoresis.

Front

True or False: The effects of a noncompetitive inhibitor on an enzyme can be reversed by increasing the amount of substrate present.

Back

False

Front

Which RNA molecule is involved in RNA processing?

Back

Small nuclear RNA (snRNA) is involved in RNA processing.

Front

What enzyme converts circular DNA into linear DNA?

Back

Restriction enzyme is responsible for converting circular DNA into linear DNA.

Front

What role do small interfering RNAs (siRNAs) play in gene regulation?

Back

Small interfering RNAs (siRNAs) are involved in post-transcriptional regulation by modifying mRNA stability or translation efficiency.

Front

Define noncompetitive inhibitor.

Back

A noncompetitive inhibitor is a substance that reduces the activity of an enzyme by binding to a site other than the active site, regardless of the substrate concentration.

Front

What is the function of RNA polymerase?

Back

RNA polymerase is an enzyme that synthesizes RNA from a DNA template during the process of transcription.

Front

What is gel electrophoresis used for?

Back

Gel electrophoresis is a technique used to separate DNA, RNA, or proteins based on their size and charge.

Front

What is the role of the spliceosome in gene expression?

Back

The spliceosome is a complex that removes introns from pre-mRNA, allowing for the formation of mature mRNA.

Front

What is the difference between mRNA and tRNA?

Back

mRNA (messenger RNA) carries genetic information from DNA to the ribosome for protein synthesis, while tRNA (transfer RNA) brings amino acids to the ribosome during translation.