Eggs are, but I'm not sure about the rest.
Living things need water in their cells. Water is the universal solvent - most of the chemicals a cell needs is dissolved and transported in water. Water is an environment where chemical reactions can occur and water is needed in many of those reactions - like the hydrolysis reaction (needed in the break down of food molecules). If a cell becomes dehydrated chemical reactions slow down. Chemical balance of the cell is changed as waste materials are not removed fast enough, food is not broken down, etc. Water also helps regulate the heat that can build up in a cell during chemical reactions. A dehydrated cell = increase in cell temp. Water content of a cell also affects the pH of a cell environment. Certain reactions occur better at certain pH. Homeostasis is maintaining a balance with the the environment. Without water the balance is upset.
Answer: C.
Explanation: putting on gloves and properly changing them out while working with a certain food can prevent contamination. I hope I’m correct and this helps!
Answer:
Because of a spinal reflex
Explanation:
Phototropism is a reaction to light but it only occurs in plants.
