lipid soluble must be oxidized before they are excreted from.otherwise the toxins would not be able to pass through the
a)bowman capsule
b)red blood cells
c)cell membranes
d)cytoskeleton
To answer this question, we need to understand the concept of lipid solubility and excretion of toxins.
Lipid-soluble substances are those that can dissolve in fats and oils. These substances have the ability to pass through lipid-based barriers, such as cell membranes. When it comes to toxin excretion, the body's main route is through the kidneys, where toxins are filtered and eliminated in the urine. The kidney filtration process involves passing the blood through tiny structures called nephrons, which are composed of several parts, including the Bowman's capsule.
Now, let's analyze the options:
a) Bowman's capsule: The Bowman's capsule is an essential part of the nephron in the kidney. It acts as a filter, allowing small molecules to pass through while retaining larger ones. Lipid-soluble toxins, without being oxidized first, would not be able to pass through the Bowman's capsule since it is not permeable to lipid-soluble substances. Therefore, the correct answer is NOT (a).
b) Red blood cells: Red blood cells play a role in transporting oxygen and carbon dioxide in the body. They are not involved in the excretion of toxins. Thus, the correct answer is NOT (b).
c) Cell membranes: Cell membranes are composed of a lipid bilayer and are permeable to lipid-soluble substances. However, when it comes to toxin excretion, the cells in the body do not directly excrete toxins through their cell membranes. Rather, the toxins are processed and excreted through specific organs like the kidney. So, the correct answer is NOT (c).
d) Cytoskeleton: The cytoskeleton is the network of fibers that provides structure and support to cells. It is not involved in the excretion process. Therefore, the correct answer is NOT (d).
In conclusion, lipid-soluble toxins must be oxidized before they can pass through the Bowman's capsule in the kidneys for excretion. Hence, the correct answer is (a) Bowman's capsule.