IOWA STATE U:No, you cannot go from a BS degree to a PhD degree program. You must complete a masters degree first.
UIUC: You should indicate M.S. and then on the application you will be asked if you plan to continue in the Ph.D. program. Also, you should mention in your statement of purpose that you goal is to obtain a Ph.D.
CMU:Thank you for your e-mail. Requirements for the MS degree must be completed before beginning Ph.D. studies.
You are welcome to apply to our MS program through our online application at
UMD:You can but generally the faculty will then recommend your application be changed to MS