MCAT Biochemistry Question 69: Answer and Explanation
Home > MCAT Test > MCAT biochemistry practice tests
Test Information
- Use your browser's back button to return to your test results.
- Do more MCAT biochemistry practice tests.
Question: 69
9. Which of the following is/are true about sphingolipids?
I. They are all phospholipids.
II. They all contain a sphingosine backbone.
III. They can have either phosphodiester or glycosidic linkages to their polar head groups.
- A. I only
- B. III only
- C. II and III only
- D. I, II, and III
Correct Answer: B
Explanation:
Sphingolipids can either have a phosphodiester bond, and therefore be phospholipids, or have a glycosidic linkage and therefore be glycolipids. Not all sphingolipids have a sphingosine backbone, as in statement II; some have related (sphingoid) compounds as backbones instead.