b. phosphate. The polar head of a phospholipid is negatively charged and is made up of phosphate molecules. This polar head region attracts water (hydrophilic) and is positioned outward to interact with water.
Answer:
WHAT IS IMPORTANT FUNCTIONALLY ABOUT THE SPECIALIZED EPITHELIUM
(TRANSITIONAL EPITHELIUM)
IN THE BLADDER? THEY HAVE ABILITY TO SLIDE OVER ONE ANOTHER, THUS DECREASING THE THICKNESS OF THE MUCOSAL LAYER AS THE BLADDER FILLS & STRETCHES TO ACCOMMODATE THE INCREASED URINE VOLUME.
Answer:
In primary active transport, the carrier protein uses energy directly from ATP through hydrolysis.
In secondary active transport, it uses energy stored in the concentration gradients of ions.
Petrifaction happens jvgocg igcgicigcicg