Ovulation occurs when a follicle releases an egg cell
Enzymes are usually very specific as to which reactions they catalyze and the substrates that are involved in these reactions. The enzyme and the substrate possess specific complementary geometric shapes that fit exactly into one another. This is often referred to as "the lock and key" model.
The following statements apply:
1. Salt is not chemically bonded to water.
2. The ratio of salt to water may vary.
3. Salt and water retain their own chemical properties.
The solution formed by dissolving salt in water is an example of a mixture, it is a physical change and no new substance is formed. The salt and the water are not chemically bonded and salt can easily be recovered from the water by mean of evaporation. Any amount of salt can be dissolved in the water and each of the component, that is, salt and water still retain their individual chemical properties.
