The Purple Color of the Anion Formed in the Ninhydrin

question 59

Multiple Choice

The purple color of the anion formed in the ninhydrin test for α-amino acids is due to:

• A)the attraction of the anion to a metal in a pi-complex.
• B)intermolecular hydrogen bonding.
• C)molecular vibrations.
• D)the highly conjugated nature of the anion.
• E)the color of the ninhydrin.

Grasp the epidemiological trends among rural vs. urban populations and among different racial or ethnic groups.

Understand the types of risk factors that aging adults face, emphasizing the psychosocial aspect.

Analyze the role of leading health indicators in motivating public health actions and measuring progress.

Understand the rapid pace of changes in Nursing Informatics (NI) relative to technology sectors.

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Definitions:

Osteoporosis

A bone disease characterized by decreased bone mass and density, leading to increased risk of fractures, often occurring with age.

Bone Density

A measure of the amount of minerals (such as calcium) contained in a certain volume of bone, indicating its strength and risk of fracture.

Brittleness

describes a material's tendency to fracture or break without significant deformation or distortion.

Integrity Versus Despair

A stage of psychosocial development in late adulthood, as proposed by Erik Erikson, where individuals reflect on their lives, leading to either a sense of fulfilment or a sense of despair.