You Experimentally Change the DNA Sequence Directly Upstream of a Start

question 10

Multiple Choice

You experimentally change the DNA sequence directly upstream of a start codon of an operon in E. coli to investigate the function of this region of DNA. Analysis reveals that after the change the same amount of mRNA is made from the operon, but there are very few proteins made from the operon. What is the most likely function of the DNA sequence that you changed?

• A) The DNA sequence likely functions as a ribosome-binding site.
• B) The DNA sequence likely functions as a promoter.
• C) The DNA sequence likely functions as a termination sequence.
• D) The DNA sequence likely functions as in transcriptional regulation.

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Definitions:

Abstract

A short summary of a research article, thesis, review, or other in-depth analysis, highlighting the main points and conclusions.

Logic

The science of correct reasoning, particularly as it involves the structure of arguments and the principles that lead to valid conclusions.

Cognitive Abilities

Cognitive Abilities are the mental skills that enable learning, problem-solving, reasoning, and understanding, including memory, attention, and executive functions.

Piaget

A Swiss psychologist known for his pioneering work in child development, particularly in the field of cognitive development.