The covalent bonds between the oxygen and the hydrogen atoms result from a sharing of the electrons. This is what holds the water molecules themselves together. The hydrogen bond is the chemical bond between the water molecules that holds the mass of molecules together.
The answer to this is letter A) mitochondria. Mitochondria is an organelle that is bounded or wrapped in a double membrane. These membranes or <span>phospholipid bilayer </span>contains embedded proteins. The outer layer is characterized to be smooth while the inner layer has cristae. These cristaes are the folds.
B the organ that turns into the shell of the animals
