Gene Expression Can Be Altered More Easily at the Level

question 50

Multiple Choice

Gene expression can be altered more easily at the level of post-transcriptional processing in eukaryotes than in prokaryotes because ________.

• A) eukaryotic mRNAs get 5' caps and 3' tails
• B) prokaryotic genes are expressed as mRNA, which is more stable in the cell
• C) eukaryotic exons may be spliced in alternative patterns
• D) prokaryotes use ribosomes of different structure and size

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Definitions:

Plate Boundary

The edges where two or more of Earth's tectonic plates meet, which are zones of seismic and volcanic activity.

Seafloor Spreading

The formation of fresh oceanic crust at mid-ocean ridges, which gradually drifts away from the ridge, aiding in the movement of continents.

Magnetic Stripe

Linear patterns of magnetism found on the seabed that are parallel to ocean ridges, providing evidence for the theory of plate tectonics.

Magnetic Field

a vector field surrounding magnets and electric currents, representing the force exerted by magnets on moving charges and magnetic materials.