Questions: Question 18 1 pts What biological process did scientists use as an inspiration for engineering enzymes to remove molecular tags from red blood cells? phosphate transfer from ATP endocytosis enzyme activation natural selection

The answer is the fourth one: natural selection.

Explanation for each option:

1. Phosphate transfer from ATP: This process involves the transfer of a phosphate group from ATP to another molecule, which is a common way to activate or deactivate enzymes and other proteins. However, it is not directly related to the engineering of enzymes to remove molecular tags from red blood cells.

2. Endocytosis: This is a cellular process in which cells engulf external substances, bringing them into the cell. While important in many biological contexts, it is not relevant to the engineering of enzymes for removing molecular tags from red blood cells.

3. Enzyme activation: This refers to the process by which enzymes are activated to perform their catalytic functions. While enzyme activation is crucial for their function, it does not specifically address the inspiration for engineering enzymes to remove molecular tags from red blood cells.

4. Natural selection: This is the process by which organisms better adapted to their environment tend to survive and produce more offspring. Scientists often use principles of natural selection in directed evolution, a method to engineer enzymes by mimicking the process of natural selection to evolve proteins with desired properties. This approach is relevant to the engineering of enzymes to remove molecular tags from red blood cells.

Summary: Scientists used the principles of natural selection as an inspiration for engineering enzymes to remove molecular tags from red blood cells.