<span>True! stomata open and close to maintain the homeostatis of the plants. its function is to keep the internal temperature and the water level.</span>
The lock and key model is where the substrate has a specific shape which can fit into the specific shape of the active site of the enzyme, just like how a key has a specific shape which can fit into a specific lock.
In other words, the substrate is complementary (same shape) to a specific enzyme, so the substrate can bind/fit to the enzyme.
The plasma membrane is the membrane that surrounds cells and controls what comes in and what goes out of that cell. It is made up of layers of phospholipids whos tails are nonpolar (no charge) and the heads of the Phospholipids are Polar (have a charge).
The not acceptable method is putting hot food in the refrigerator (or freezer).
This could raise the temperature in the fridge (upper than 6°C or 41°F), and so the other food contained in it.
Food should be put in the fridge in small pieces to cool faster.
As a tip, you should know that stainless steel cools food faster than plastic when it is on contact. And transfer heat also faster than plastic. Use it at your convenience if you want to heat (or cool) food faster.
<span>carriers are not eliminated by the disease before passing the defective alleles on to their offspring</span>
