Answer:
Forms of passage of substances across the blood–brain barrier. (A) Passive diffusion: fat-soluble substances dissolve in the cell membrane and cross the barrier (e.g., alcohol, nicotine and caffeine). Water-soluble substances such as penicillin have difficulty in getting through.
Answer:
it would result in transcriptional activity of certain genes
Explanation:
Exposure to Teratogen can cause defects if a foetus is exposed to it. There are several kinds of teratogens that can range (as mentioned in the question) from a chemical to a virus or radiations. Teratogen is the term used for any such agent that can result in harming the unborn baby due to exposure to it.
What I think about Genetic Counseling is it takes a lot of responsibility.Genetic counseling is the process of determining the risk you have of passing on an inheritable disease to your baby. It also involve a specially trained health care professional who identifies families at risk, investigates the problem present in the family, interprets information about the disorder, analyzes inheritance patterns and risk of recurrence, and reviews available options with the family. You have questions like: Do you have a history of diabetes, hypertension, cancer, or twins? Are there any diseases that seem to run in your family? so on.But it takes a person with respect, brave and caring to do Genetic Counseling.
Good Luck!
Avian flu, Anthrax, SARS [Severe Acute Respiratory Syndrom]
