Which set of substances requires either channel or transport proteins in order to cross the cell membrane?
A. H20, NaCl, C6H1206
B. NaCl, NH CONH2, 02
C. N2, H20, C6H1206
D. N2, H20, NH3

Four types of motile cells in human body?

Students in biology are studying the macromolecules of life. they used a calorimeter to determine the calories in various types of food. once the lab was completed, the students ate the left over food samples. monica commented that in just 6 or 7 "chews" of the saltine, it was gone; nothing but a sticky paste in her mouth. elaborate on what happened chemically while chewing the saltine. include the macromolecules present.

1) strawberry plants typically reproduce by making runners, which are miniature versions of themselves, that grow off of the roots and stems of the parent. this type of vegetative reproduction is known as a) pollination. b) fragmentation. c) binary fission. d) vegetative propogation.