Steve was born a male with an extra x chromosome on the 23rd pair. as result he has reduced masculine characteristics, enlarged breasts, and is obese and excessively tall. which disorder is likely to be diagnosed?

The correct answer is: Klinefelter syndrome (KS) or XXY syndrome.

This syndrome usually occurs randomly and it may come in different forms:

•When there is an extra X chromosome in each cell

•When there is an extra X chromosome in some cells (mosaic Klinefelter)

•When there is more than one extra X chromosome.

Men with this syndrome often don’t have visible symptoms but can also lead to infertility. On the other hand, some of them have symptoms such as weaker muscles, greater height, less body hair, breast growth…

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.