Select all of the following ways that the flu virus may impact body systems.A) The breakdown of muscle fibers and accumulation of fluid cause muscle and joint achiness.B) The restriction of blood vessels in the skin conserves heat and results in chills.C) The abundance of cytokines signals the hypothalamus to increase body temperature, resulting in a fever.D) Appetite centers in the brain show reduced action, resulting in a loss of appetite and nausea.E) Toxins produced by the virus break down muscles, resulting in muscle aches and pains.F) A rapid loss of epithelial cells within the respiratory system results in a shortness of breath and rapid heart rate.
What will be an ideal response?
A, B, C, D
The flu is responsible for fever, muscle aches, chills, and a loss of appetite. It does not produce toxins however and there is no rapid loss of epithelial cells.
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Plants are a:
a. polyphyletic group. b. monophyletic group. c. group without a common ancestor. d. group with many ancestors. e. paraphyletic group.
A primary difference between a normal cell and a cancerous cell is
a. the cell must be directly exposed to a carcinogen. b. the cell must lose normal cell division controls c. the cell must go through mitosis at least 25 times. d. the cell must be located in either connective tissue or muscle. e. the cell must be located in epithelial tissue..
Why is the presence of clay particles important in soil?
a. They provide macronutrients- particularly nitrogen, phosphorus, and potassium. b. They bind metal ions, which would be toxic if absorbed by plants. c. They allow water to percolate through the soil, making oxygenrich air pockets available. d. The negative charges on clay bind to positively charged ions and prevent them from leaching.
Which one of the following cell types is found only in flowering plants?
A. vessels B. tracheids C. parenchyma D. sieve tubes E. epidermis