In an Experimental Situation,a Student Researcher Inserts an MRNA Molecule

question 37

Multiple Choice

In an experimental situation,a student researcher inserts an mRNA molecule into a eukaryotic cell after she has removed its 5' cap and poly-A tail.Which of the following would you expect her to find?

• A)The mRNA would not be transported out of the nucleus.
• B)The cell recognizes the absence of the tail and adds a new poly-A tail to the mRNA.
• C)The molecule is digested by restriction enzymes in the nucleus.
• D)The molecule is degraded by hydrolytic enzymes because it is no longer protected at the 5' end and the 3' end.

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Definitions:

Proton Gradient

A gradient formed by the difference in proton concentrations across a membrane, often used to generate ATP in cellular respiration and photosynthesis.

Mitochondrial Membrane

The membrane that encloses the mitochondrion, consisting of an outer membrane and an inner membrane with folds known as cristae, where energy production occurs.

Citric Acid Cycle

A key component of cellular respiration, this cycle processes acetyl-CoA to produce energy, NADH, FADH2, and carbon dioxide.

Mitochondrial Matrix

The innermost compartment of the mitochondrion, enclosed by the inner membrane, containing enzymes, DNA, and ribosomes.