Why Do Metabolic Pathways Require Tens to Hundreds of Different

question 57

Multiple Choice

Why do metabolic pathways require tens to hundreds of different enzymes?

• A) The enzymes are used up after one reaction and the molecules have to undergo multiple rearrangements.
• B) The enzyme is deformed by the interaction with the substrate and needs a period of time to return to its
• Original reactive form, so many enzymes are needed to keep the pathway going.
• C) Each enzyme has a specific substrate and produces a specific product.
• D) Multiple enzymes are not required for the pathway, but having them speed up the production of the final product.
• E) The enzymes are attached to a membrane and cannot move to the location of the new intermediate, so

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Definitions:

Sampling Error

The discrepancy between a sample statistic and its corresponding population parameter, arising purely by chance because the sample is not a perfect representation of the population.

Nondirectional Research Hypothesis

A hypothesis suggesting a correlation between variables without defining the nature of their interaction.

Generalizability

The extent to which the findings from a study can be applied to a wider population or different contexts.

Null Hypothesis

A statement that asserts there is no effect or no difference, and it is the hypothesis that researchers aim to test against.