Moisture in food can be divided into "bound water" and "free water" according to different properties. Which of the following is not bound water?
A: The first layer of water molecules adsorbed to glucose molecules
B: Water molecules with unpaired electrons entering the outer empty orbits of sodium ions
C: Water molecules adsorbed in capillaries in food tissue
D: Water molecules bound to the negative ion of glutamic acid on the protein peptide chain
A: The first layer of water molecules adsorbed to glucose molecules
B: Water molecules with unpaired electrons entering the outer empty orbits of sodium ions
C: Water molecules adsorbed in capillaries in food tissue
D: Water molecules bound to the negative ion of glutamic acid on the protein peptide chain
举一反三
- According to the state of water in the soil, the liquid phase can be divided into ____, bound water, and free water.
- In a microwave oven, radiation penetrates food and is then absorbed primarily by water molecules, caused heat to spread through the food.（） A: food B: primarily C: caused D: the food
- High above the _________ , water molecules change into liquid that falls down in precipitation of rain to the earth.
- 中国大学MOOC: When water cools, but does not freeze, the molecules move ______________ and take up ______________ space.
- 束缚水（bound water）