A Characteristic That Is Unique to Vitamin B₁₂ Is That

question 14

Multiple Choice

A characteristic that is unique to vitamin B₁₂ is that it requires:

• A) lipids for absorption.
• B) the mineral magnesium for full activity.
• C) intrinsic factor for absorption.
• D) an acidic intestinal environment for synthesis.

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Definitions:

Tay-Sachs Disease

A genetic disorder that destroys nerve cells in the brain and spinal cord progressively due to the absence of a vital enzyme, leading to severe neurological disability and death.

Genetic Drift

Refers to the random fluctuations in the frequency of alleles within a population over time, not due to natural selection.

Sympatric Speciation

Speciation pattern in which speciation occurs within a population, in the absence of a physical barrier to gene flow.

Physical Barrier

Any natural or artificial structure that blocks or limits movement, spread, or access of organisms or materials.