Essays on Opsin

Summary: The interaction between the limbic system and the subcortical dopaminergic system, is important in the experience of reward by the individual. The hypothesis in the present study is that, increased excitability of the medial prefrontal cortex, exerts a suppressive effect on the interaction between subcortical dopaminergic system and the limbic striatum structures (Ferenczi et al.). Lack of a reward seeking behavior is seen in patients with depression and MRI studies in these subjects have identified increased excitability of the medial prefrontal cortex. This finding was suggested as a rationale for the study. The experiments were designed to demonstrate ...

What is an alkane? Any hydrocarbon which has only single bonds is an alkane and because these

hydrocarbons have a hydrogen in all possible locations they are called saturated and thus they have this general formula, CnH2n+2.

But an alkyne is an unsaturated hydrocarbon which has at least one carbon-carbon triple bond

without any other functional groups thus they have given general formula of CnH2n-2.

Cis-trans isomerism is a type of stereoisomerism in which the position of the functional groups

differs, also known as geometric isomerism. The different is the orientation of the functional groups as we know in cis isomerism the both functional groups are on the same side though in trans isomerism they are located on the opposite side.

In retinal section of the eye the visual pigment are located which contain rhodopsin which has a

reddish color in darkness but as it’s exposed to light the color fades. The rhodopsin molecules contain opsin and 11-cis-retinal ...