Question 1. Explore drugs carrier proteins. Question 2. Explore nutritional diseases of the Nervous system Question 3. Nutritional deficiency disease of the reproductive system of male and female.

Here are the answers to your questions:

1. Drug carrier proteins are specialized proteins that bind to and transport drugs within the body, facilitating their delivery to target sites or aiding in their absorption, distribution, metabolism, and excretion. They can improve a drug's solubility, stability, and bioavailability, often reducing side effects by directing the drug more specifically. An example is albumin, which can bind to many hydrophobic drugs in the bloodstream.

2. Nutritional diseases of the nervous system are conditions caused by deficiencies or excesses of essential nutrients that impair the normal function of the brain, spinal cord, and peripheral nerves. Examples include Wernicke-Korsakoff syndrome, caused by severe thiamine (Vitamin B1) deficiency, leading to confusion, ataxia, and memory loss. Another is pellagra, resulting from niacin (Vitamin B3) deficiency, which can cause dementia, among other symptoms.

3. Nutritional deficiency diseases of the reproductive system occur when a lack of specific nutrients impairs the normal functioning of male and female reproductive organs and processes. In females, iron deficiency anemia can lead to irregular menstruation and reduced fertility. In males, zinc deficiency can impair sperm production and testosterone levels, affecting fertility and sexual function.