Extreme Halophiles Absorb Light to Form ATP, Using a Molecule

question 72

Multiple Choice

Extreme halophiles absorb light to form ATP, using a molecule called microbial rhodopsin.This molecule is formed by combining a protein with _______, a pigment also found in the vertebrate eye.

• A) NaCl
• B) ammonia
• C) retinal
• D) chlorophyll
• E) sulfur

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Definitions:

Convert Ammonia

The biochemical process of transforming ammonia into urea or other safe compounds for excretion, primarily occurring in the liver.

Disaccharides

Carbohydrates composed of two monosaccharides joined together, such as lactose, sucrose, and maltose, important in nutrition and metabolism.

Bile Secretion

The process by which the liver produces bile, a substance that helps digest fats.

Cystic Duct

A tube that transports bile from the gallbladder into the common bile duct and then into the small intestine.