Attention-deficit/hyperactivity disorder (ADHD) is a complex neurodevelopmental disorder that affects many children and often continues into adulthood. The biology of ADHD involves various factors, including genetics, neurotransmitter systems, brain structure and functioning, and environmental influences, all contributing to the disorder's wide range of symptoms. Genetic factors are believed to play a significant role in ADHD. Twin and family studies have consistently shown a heritable component to the disorder, with estimates suggesting

G Protein-Linked Receptors An organism must respond appropriately to its internal and external environments day after day in order to survive. The organism's cells respond to internal and external stimuli much like tiny computers that process numerous inputs and also produce numerous outputs in daily existence (Kennedy 2004). These stimuli are signals that come from the general environment or the cells of other or co-existing organisms, proximate or distant, and this

The responses will be tabulated into data sheet that exhibit the participants ease of remembering that facts. The coding will produce levels which showing the proportionate ability to remember. The data will then be input in a statistical program to give distributions and this will be subjected to a T-test to assess their significance level at 5%. The decision rule will be such that reject the null hypotheses if probability

killer whales. It has 6 sources. The following is a brief overview of the biological classification, diet, distribution and social behavior of the mammalian orcinus orca. The research also outlines the factors that are responsible for the decline in orcinus orca population around the world today. Special emphasis has been given to resident orcinus orca to demystify the concept that orcas are lethal to the fishermen and hence should be

1997). The basis of all plants' alternating generations and complex life cycles could be found in a common ancestor shared with fern species, even though ferns are no better reproducing sexually than moss are fully dependent on a saturated enough environment to perform a task that flowers have developed innumerable methods of getting done (Munster et al. 1997; Mehltreter et al. 2010). Conclusion The life cycles of moss and ferns are

Melanogaster Stubble Gene The author of this scientific report has been asked to offer a thorough review of the stubble gene if a D. melanogaster. Items that will be covered will be a brief overview of the stubble gene, an introduction to the gene, the basic biological process when it comes to the gene, the phenotypic characteristics of the gene, the mode of inheritance of the gene, at least two mutant