Best Answer: Transcription. DNA---Transcription---mRNA---Translatio... In transcription DNA is unzipped and the enzyme RNA polymerase runs along the template strand of the DNA. The template strand of DNA can be identified by finding the nucleotide sequence T A C at the 3â end (you can see this on your template strand).RNA, or messenger RNA, is generated by reading a strand of DNA. RNA polymerase (an enzyme that specifically makes mRNA) moves along the strand of DNA and joins complementary strands (in RNA, the complement to adenine is uracil instead of thymine). mRNA is produced only for the gene that is being read at that time.
Anxiety and the Brain: An Introduction. It should come as little surprise that your brain is the source of your anxiety. Not only does anxiety manifest itself in thoughts â it also affects your brain chemistry in a way that can alter future thoughts and affect the way your entire body operates.
The negative effects of stress. When you perceive a crisisâ-or think a stressful thoughtâ-your brain secretes corticotrophin-releasing hormone (CRH). This master stress hormone triggers the release of glucocorticoid stress hormones, such as cortisol. Stimulated by glucocorticoids and other stress hormones (like adrenaline), the brain and body shift into crisis mode. Your breathing and pulse quicken, making more oxygen available to your muscles.