Please capitalize where necessary: two of these proteins are albumin, which helps to maintain blood pressure and keep blood in the vessels, and antithrombin iii, which prevents blood clots from forming.
A: Two of these proteins are albumin, which helps to maintain blood pressure and keep blood in the vessels, and antithrombin III, which prevents blood clots from forming.

Please capitalize where necessary: on friday we can expect sunny weather. morning temperatures will be around 21 c. during the day they will reach a maximum of 35 c. low temperatures at night will be around 19c. we have weak westerly winds.
A: On Friday we can expect sunny weather. Morning temperatures will be around 21 C. During the day they will reach a maximum of 35 C. Low temperatures at night will be around 19C. We have weak westerly winds.

Please capitalize where necessary: notice here an important function of the church.
A: Notice here an important function of the Church.

Please capitalize where necessary: systems supposedly allow the gambler to have an edge.
A:
Systems supposedly allow the gambler to have an edge.