解析 B。原因:文章中明确提到“When we cook, various chemical reactions take place. The heat causes the molecules in the food to break down and combine in different ways.”,即烹饪时是热量导致食物中的分子分解并以不同方式结合。反馈 收藏
So molecules like this ended up on Earth. In fact, what we call meteorites are pieces broken away from comets and asteroids that came in our atmosphere and left their extra-terrestrial organic matter on the surface of primitive Earth.这样的分子最终来到了地球上。事实上，我们所说的陨石是来自彗星...
The start of spring has an unmistakable, yet unplaceable smell. It’s a bit reminiscent of dirt, but there’s something else beneath the surface.
the respiratory system consists of the airways the lungs and the respiratory muscles that mediate the movement of air into and out of the body. Within the alveolar system of the lungs molecules of oxygen and carbon dioxide are passively exchanged by diffusion beeen the gaseous environm...
While you can't mix pee and bleach, there is a way to deal with the situation when your whole house smells like dog urine. There are a lot of commercially available options marketed as enzymatic cleaners. These products contain enzymes, which are biological molecules that break down compounds...
Chemical bonds are formed when you mix the PVA glue and slime activator together. Slime activators (borax, saline solution, or liquid starch) change the position of the molecules in the glue in a process called cross-linking! A chemical reaction occurs between the glue and the borate ions, ...
Have you ever seen a flower change color or noticed how food changes when cooked? These are all examples of chemical reactions that occur due to changes in the arrangement of atoms and molecules. Pharmaceuticals Chemistry plays a crucial role in the development of new medicines. Pharmaceutical com...
We had the standard mold air testing done when we bought the house. The levels came back in a range acceptable to the bank. I didn’t know at the time thatmost functional medicine doctors say those tests are not enough. They aren’t sensitive enough for many mold spores and may not pi...
Some molecules are more prone to linger in the air or adhere to surfaces, prolonging the odor. 4 What role do smells play in nature? In nature, smells play a critical role in communication among species, navigation, and signaling danger, such as the scent of smoke indicating fire. Share ...
The Swee Tango, as a cross between a Honeycrisp and a Zestar apple, takes on flavors of honey and a bit of orange. Usually in apple recipes, other materials are added to improve the apple flavor, but the Swee Tang...