Biology: Concepts and Investigations
Biology: Concepts and Investigations
5th Edition
ISBN: 9781260259049
Author: Hoefnagels
Publisher: MCG
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Chapter 25.6, Problem 1MC
Summary Introduction

To determine:

The overlap between areas colored gray and areas marked with distantly spaced lines in figure 25.13 , and how vitamin D explains these data.

Concept introduction:

A precursor molecule in skin is converted to vitamin D after exposure to ultraviolet light. Vitamin D is modified in the kidneys and then the liver until it becomes calcitriol, which is needed for calcium absorption in intestine.

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Biology: Concepts and Investigations

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