The Reason That Lack of Vitamin B₁₂ Causes Megaloblastic Changes

question 23

Multiple Choice

The reason that lack of vitamin B₁₂ causes megaloblastic changes is that vitamin B₁₂:

• A) Is needed for the formation of nucleotide bases
• B) Is needed for the conversion of methionine to SAM
• C) Initiates mitosis
• D) Is needed for synthesis of intrinsic factor

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Definitions:

Multicelled Fungi

Organisms from the fungi kingdom that consist of more than one cell, including molds, mushrooms, and yeasts, known for their roles in decomposition and as pathogens.

Spores

Resistant, dormant forms of certain fungi, plants, and bacteria that can survive adverse conditions and give rise to a new individual.

Infectious Disease

Illnesses caused by pathogens such as bacteria, viruses, fungi, or parasites, which are contagious.

Microorganisms

Tiny living organisms that can only be seen with the aid of a microscope, including bacteria, viruses, fungi, and protozoa.