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Which molecule type does bile emulsify?

A.

Lipids and proteins

B.

Proteins

C.

Carbohydrates and proteins

D.

Lipids

Answer and Explanation

The Correct Answer is D

A. Lipids and proteins: While bile is involved in fat digestion, it does not emulsify proteins.

B. Proteins: Bile does not emulsify proteins. Proteins are broken down by enzymes like pepsin.

C. Carbohydrates and proteins: Bile has no role in the digestion of carbohydrates or proteins.

D. Lipids: Bile emulsifies lipids, breaking them into smaller droplets to facilitate enzymatic digestion by lipases.


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Related Questions

Correct Answer is B

Explanation

A. Brain and aortic arch: The aortic arch contains peripheral chemoreceptors, but the central chemoreceptor is in the medulla.

B. Medulla of the brain stem: Central chemoreceptors located in the medulla monitor the levels of carbon dioxide (via pH changes) in the cerebrospinal fluid to regulate breathing.

C. Carotid arteries and brain stem: The carotid arteries contain peripheral chemoreceptors, but not central chemoreceptors.

D. Carotid arteries and aortic arch: These locations house peripheral chemoreceptors, not central ones.

Correct Answer is D

Explanation

A. Eosinophil: Eosinophils are involved in allergic reactions and parasitic infections, but they are not responsible for B and T cell functions.

B. Basophil: Basophils are involved in inflammatory responses, particularly releasing histamine, but do not include B or T cells.

C. Monocyte: Monocytes are large white blood cells that develop into macrophages but do not include B or T cells.

D. Lymphocyte: Lymphocytes are a subtype of white blood cells that include B cells (which produce antibodies) and T cells (which are involved in cell-mediated immunity), making this the correct answer.

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