Which of the Following Molecules Is Not Considered a Porphyrin

question 55

Multiple Choice

Which of the following molecules is not considered a porphyrin?

• A)Chlorophyll
• B)Vitamin B12
• C)Hemoglobin
• D)Peptidoglycan

---

Definitions:

Distribution

The spread of values within a dataset or the pattern showing how often each value occurs.

Chi-square Test

A statistical test used to determine if there is a significant difference between observed and expected frequencies in one or more categories.

Null Hypothesis

A default hypothesis that there is no effect or no difference, and it is assumed true until evidence indicates otherwise.

Significant Change

A statistical term used to describe a change in data that is likely not due to random chance alone.