jiunshan

Hi iNow, thanks for ur comments, I had changed the word u mentioned. Anyway, I had submitted my report...sigh...I will check with my lecturer regarding my questions. Thanks

Does lactose helps stimulate bowel movements to expel waste from the colon?

I had carried out a lab session and I am facing a big problems which I cant get through, I hope somebody here can help me. While I was getting UV absorbance at 510 nm for glucose standard curve, I get a negative reading for one of the tube. Is this possible? Why? somehow, I get negative reading for [ethanol] produced and [glucose] catabolised. Is that means no ethanol being produced nor glucose being catabolised? I had attached my lab report with this thread, hope someone can answer my problems. Thanks a lot!!! Experiment 2.doc