A Brush Border of Microvilli,specialized for the Active Transport of Small

question 8

Multiple Choice

A brush border of microvilli,specialized for the active transport of small molecules across transporter proteins in the cell membrane,is typically found in which type of epithelium?

• A) Pseudostratified columnar epithelium
• B) Simple columnar epithelium
• C) Simple squamous epithelium
• D) Stratified squamous epithelium
• E) Transitional epithelium

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Definitions:

Gene Duplication

A process in which a segment of genetic material or a whole gene is copied or duplicated, leading to multiple copies of that segment or gene in the genome.

Paralogs

Genes that arise by duplication within the same organism, often developing new functions while retaining some characteristics of the original gene.

Functional Redundancy

The phenomenon where multiple species or genes perform similar functions within an ecosystem or biological system, providing resilience against environmental changes or perturbations.

Engrailed Gene

A gene that plays a crucial role in defining the segments and patterning of the body parts in many organisms, including their limb development.