Proteins can not be transported by carrier proteins through cell membranes because A.) they are lipid soluble

B.) they are very large molecules

C.) they contain nitrogen

D.) the membrane is made of protein

This is a time line from 685 to 978

I'm sorry to hear that. i will try to answer your other questions if it is within my ability. : )answers: my favourite colour is black.my favourite food is pasta.my favourite school subject is english, but i do also like lunch time.my least favourite subject is history as well as geography. i have currently garnered a quite equal hatred for both of the subjects.what about you? well, you for the points. : )