Scenario You Conducted a Series of Experiments to Test Whether the the Expression

question 25

Multiple Choice

Scenario
You conducted a series of experiments to test whether the expression of hexokinase, an important enzyme involved in glycolysis, varies under different conditions. In the first experiment, you measured the production of hexokinase mRNA in cells at three different temperatures: 37°C, 25°C, and 10°C. Your results showed that the mRNA levels for hexokinase were 5× and 20× lower at 25°C and 10°C than at 37°C, respectively. Based on these results, you are going to conduct further experiments to attempt to answer your research question.
-What can you conclude from these results?

• A)Unpacking of the hexokinase gene occurs only at 37°C.
• B)Transcription of the hexokinase gene occurs less frequently at lower temperatures.
• C)The levels of hexokinase protein are not affected by temperature.
• D)Translation of the hexokinase gene occurs more frequently at higher temperatures.

---

Definitions:

Functional Group

A specific grouping of atoms within a molecule that has a characteristic chemical behavior and properties.

R-(C=O)H

A general formula representing aldehydes, organic compounds where the carbonyl group is bonded to a hydrogen atom.

Butanal

An aldehyde with the formula C4H8O, recognized by its sharp, sweet smell, commonly used in the flavoring and perfume industries.

Line Structure

A simplified representation of a chemical structure using lines to represent chemical bonds and showing the arrangement of atoms within molecules.