Zacchias has been in a horrible fire, and 50% of the total surface of his skin has been destroyed. Given the information in this chapter, why is it so important to replace the burned skin, and what is his best specific option for replacement?
What will be an ideal response?
Unbroken skin is a very important physical barrier of the first line of defense against pathogens. Skin is acidic and provided with oils and other chemicals that discourage bacteria. In addition, the outer skin cells are tough and constantly flake off, making it difficult for bacteria to penetrate more deeply into the body. Since Zacchias has many areas of his skin that are still healthy, the most sensible solution is for his physicians to remove skin from one part of his body and transplant it to the burned areas.
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What mineral is found in horsetails that help
protect it from insects?
a. siderite b. aluminum c. silica d. feldspar e. amethyst
External fertilization is most common in animals living in ____
a. mountains b. prairies c. forests d. oceans e. deserts
Agar and carrageenan are extracted from ____ for use as thickeners or stabilizers in foods, cosmetics, and personal care products
a. brown algae b. red algae c. green algae d. brown algae and green algae e. red algae and green algae
Both existing mammals and extinct mammal-like
groups are a. synapsids. b. archosaurs. c. sauropsids. d. anapsids. e. pleiosaurs.