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Unformatted text preview: atin. Only plant protein that is complete is soy Only (tofu). (tofu). Foods that don’t contain all essential amino Foods acids are incomplete proteins. acids Nitrogen Balance The amount of nitrogen consumed (N in) as The compared with the amount of nitrogen excreted (N out) in a given period of time. The laboratory scientist can estimate the protein in a sample of food, body tissue, or excreta by measuring nitrogen in it. nitrogen Positive Nitrogen Balance N in > N out Childhood and adolescence Negative Nitrogen Balance N in < N out Kwashiorkor Kwashiorkor Vitamin A and Beta-Carotene Retinol, Retinal, and Retinoic Acid are active Retinol, forms of Vitamin A. forms Beta-Carotene is a precursor of active Vitamin A. Metabolic Roles Vision Maintains healthy cornea Participates in light detection in retina Protein Synthesis and Cell Differentiation Reproduction and Growth Vitamin A Deficiency Vitamin D Can be converted from vitamin D precursors with Can aid of UV rays, though not entirely essential. aid Vitamin D is a hormone which targets the Vitamin intestines, kidneys, and...
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- Spring '08