One type of bacteria, called gram-negative bacteria, has a pyrogen molecule that is part of its membrane structure. This endogenous pyrogen is released when the cell is destroyed by the immune system. Why would a severe gram-negative bacterial infection
be particularly dangerous to a patient?
What will be an ideal response?
Large numbers of gram-negative bacteria would stimulate an immune response, leading to the destruction of the microorganisms. The problem is that by destroying large numbers of these bacteria, large amounts of the endogenous pyrogen are released all at once. This can cause a dangerous spike in body temperature. A very high fever (over 105°F, or 40.6°C) is dangerous. It can inactivate enzymes needed for biochemical reactions within body cells.
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In Type I diabetes, the body fails to produce insulin and thus individuals must inject themselves with insulin before eating
Based on your knowledge of the control of glucose levels in the blood, what would be the result of a Type I diabetic injecting themselves with too much insulin? A. Their blood sugar levels would drop to potentially dangerous low levels. B. Excess stores of glycogen would be broken down and released from the liver. C. Glucagon would be released from the pancreas. D. Muscle tissue would begin to break down. E. All of the answer options are correct.
In eukaryotes, gene amplification is tolerated well when the amplified gene encodes for RNA products. However, it is rare or detrimental when the product is a protein. Why would it be advantageous for the cell to amplify the RNA-producing genes and not the protein-producing ones?
A) It allows for the manufacture of many RNA molecules when needed in the cell. B) Proteins are amplified from a single mRNA molecule. C) More RNA than protein is needed by the cell. D) RNAs are amplified from a single protein molecule. E) both choices A and B
What intestinal processes would be inhibited by a toxin that blocked the basolateral Na+/K+ ATPases on the intestinal epithelium? (Select all that apply.)
a. Movement of fatty acids across the apical membrane b. Transport of glucose into the epithelium across the apical membrane c. Transport of fructose into the epithelium across the apical membrane d. Transport of potassium into the epithelium across the basolateral membrane
The plant genus Pinus reaches optimal growth when it grows with the fungal genus Suillusis. The ________ of the fungus give Pinus water and mineral nutrients, while Pinus gives the fungus sugars and organic macromolecules. Pinus and Suillusis have a
________ relationship. A) hyphae; symbiotic B) spores; symbiotic C) chitin; eukaryotic D) fruit; endothermic