ANATOMY+PHYSIOLOGY-CONNECT ACCESS
ANATOMY+PHYSIOLOGY-CONNECT ACCESS
4th Edition
ISBN: 9781264265398
Author: McKinley
Publisher: MCG
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Chapter 7, Problem 7DYKB

_____ 7. Which statement is correct about an osteon?

  1. a. The circumferential lamellae surround the blood vessels and nerves within an osteon.
  2. b. Canaliculi allow for nutrient and waste exchange among the osteocytes.
  3. c. The middle region of an osteon is called the perforating canal.
  4. d. They are oriented perpendicular to the diaphysis of a long bone.
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. Consider a base substitution mutation that occurred in a DNA sequence that resulted in a change in the encoded protein from the amino acid glutamic acid to aspartic acid. Normally the glutamic acid amino acid is located on the outside of the soluble protein but not near an active site. O-H¨ A. What type of mutation occurred? O-H B. What 2 types of chemical bonds are found in the R-groups of each amino acid? The R groups are shaded. CH2 CH2 CH2 H2N-C-COOH H2N-C-COOH 1 H Glutamic acid H Aspartic acid C. What 2 types of bonds could each R-group of each of these amino acids form with other molecules? D. Consider the chemical properties of the two amino acids and the location of the amino acid in the protein. Explain what effect this mutation will have on this protein's function and why.
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