Biochemistry

Survivors of severe childhood abuse and veterans with post-traumatic stress syndrome are found to have smaller hippocampal volumes than other patients.85 This damage is caused by the release during traumatization of a cascade of cortisol, adrenaline and other stress hormones that not only damage brain cells and impair memory but also set in motion a long-lasting disregulation of the brain's biochemistry. Animals that are traumatized when they are young grow up to be cowardly bullies, with less vasopressin, which regulates aggression, and serotonin, the calming neurotransmitter, which has been shown to be low in delinquents and in children who have been regularly beaten by their parents.86 Low serotonin is the most important marker for violence in animals and humans, and has been correlated with high rates of homicide, suicide, arson, antisocial disorders, self-mutilation, and other disorders of aggression.87 Early emotional abandonment by the mother or significant family members regularly lowers the serotonin level of children. Harlow's motherless monkeys who became extremely fearful and socially violent as adults like Coleman's eleven-month-old patient whose serotonin level dropped by half following the death of his sister, demonstrate the dramatic effects of trauma on serotonin levels.88 Imbalances in neurotransmitter levels resulting from trauma can last for decades in post-traumatic stress disorders and even in Holocaust survivors.

Hi, I am currently studying highschool biochemisty and recently did an experiment on factors affecting enzyme function. I wanted to measure the rate at which pepsin could disolve a protien in a solution.

I know that pepsin is present in stomach acid and is used to break down protiens into amino acids, so in my experiment i exposed pepsin in a solution of pH 2 to various sized cubes of agar.

I'm not sure how widely agar is used, but it is a firm geletin like substance made of seaweed protien. I selected it for its rigidity and convenience, and that it is mostly protien.

I realized that the agar would not be exposed to exactly the same conditions as it would be inside a human stomach, it would not be chewed etc. I was hoping to measure any change in mass as a result of chemical breakdown.

how does CN, CS, CR act as tear gases? what is the biochemistry behind it?

comparison between photosynthesis and respiration

what is denaturation and give its importance to biological systems.

hi, i am neck deep in a project about detergents and their negative impact on the environment.can you please please suggest some sites related to that topic

what is lipid peroxidation?
Highlight the causes and consequences of lipid peroxidation.

Hello everyo one ..i am student of intermediate science & i am having a difficulty in above subject..........

The problem is that.I cand not differciate in Fatty acid ...and carbohydrates......i just get confuse........so ....could u ppl help me in this problem
well u can mail me......or.......u can talk to me online...... my email address is given below.

maneshbansari@yahoo.com

Thanks
MANESH

Does anyone know how a cell breaks down carbohydrates, vitamins, lipids, etc. Does this happen in the mitochondria? Are the stages similar to the glucose break-down process?