Many of the Steps in the Pathways Described in This $\rightarrow$

question 24

Essay

Many of the steps in the pathways described in this chapter are essentially irreversible (for A $\rightarrow$ B $\Delta$ G << 0). As a result, if the cell wants to carry out the reverse transformation, it must use a different pathway to go from B $\rightarrow$ A. For each of the enzymes on the left, pick the enzyme on the right that carries out the reverse transformation (not necessarily the reverse reaction).

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Definitions:

Fecal Occult Blood

A medical test looking for hidden (occult) blood in the stool, often used to screen for colon cancer or other digestive system issues.

Occult

Pertaining to supernatural phenomena or hidden knowledge that is beyond the range of ordinary understanding.

Kidney Tubules

Part of the renal nephron where filtration, reabsorption, and secretion take place, crucial for maintaining body's electrolyte and fluid balance.

Protein

A large, complex molecule made up of one or more chains of amino acids, essential for structure, function, and regulation of the body's tissues and organs.