__________ are complexes that remove iron from transferrin for their own use.ANSWERProteasesCoagulasesSiderophoresLipases

Break Down the Problem

1. Identify the function of the options provided.
2. Determine which option specifically is known for removing iron from transferrin.

Relevant Concepts

• Transferrin is a blood plasma protein that binds iron and transports it in the bloodstream.
• Siderophores are molecules produced by bacteria and fungi to scavenge iron from their environment, including from proteins like transferrin.

Analysis and Detail

1. Proteases: Enzymes that break down proteins but do not specifically target iron acquisition from transferrin.
2. Coagulases: Enzymes that cause coagulation, mainly associated with blood, irrelevant to iron acquisition.
3. Siderophores: Specifically designed to chelate iron, enabling organisms to utilize transferrin-bound iron.
4. Lipases: Enzymes that hydrolyze lipids, unrelated to iron acquisition.

Verify and Summarize

Based on the definitions and functions of the mentioned complexes, siderophores are the only ones that actively remove iron from transferrin for their own use.

Final Answer

Siderophores are complexes that remove iron from transferrin for their own use.