Biology

Recent Answers

2012-02-10 Chemistry (including Biochemistry) - Electrophoresis:

Hello Nathaniel!    Gel electrophoresis is one of the last steps of the forensic DNA test. This technology has been around a long time and is considered very reliable.    What is considered less reliable

2012-02-10 Pathology - a partial thyroidectomy pathology report:

Hi Helen:    A surgeon during surgery removes tissue whihc he thinks may conatain nodes. Sometimes this tissue may not show any nodes. Since your pathologist mentioned "cannot be assessed" I am assuming

2012-02-10 Chemistry (including Biochemistry) - Biochemistry:

Hi Malory!    You need the Henderson-Hasselbach equation to do that.    Try these links.    http://en.wikipedia.org/wiki/Henderson%E2%80%93Hasselbalch_equation    http://chemistry.about.com/od/acidsbase1/a/hendersonhasselbalch

2012-02-09 Pathology - a partial thyroidectomy pathology report:

Hello Helen:    The hemithyroidectomy specimen was fragmented, that happens if the surgeon is unable to remove the tissue as one piece or there is dead tissue(not in this case) and sometimes presence of

2012-02-09 Chemistry (including Biochemistry) - hydrogen:

Hi Ayee!    For hydrogen gas to burn there must be oxygen gas around. If you struck a spark in a chamber of pure hydrogen, nothing would happen.    The chamber would technically *not* be a vacuum, because