The structural backbone of a membrane is provided by the __? Phospholipid bilayer
Protein bilayer
Glycoproteins and Glycolipids
Carbohydrates

Milk production during breastfeeding is increased by the suckling of a newborn from his mother's nipple. this type of feedback mechanism best describes a positive or negative

Natural resources are any materials that humans obtain from the earth to meet our wants and needs.

Membrane vesicles containing an internal sodium chloride (nacl) concentration of 0.14 m are placed into separate beakers each containing a different solution. the first beaker contains 0.14 m sucrose, while the second beaker contains 0.14 m calcium chloride (cacl2). the temperature is 25°c. what is the solute potential inside the vesicles, expressed in units of mpa?