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
What is the most concentrated form of food energy? Types of Food Energy: There are three types of food energy (also called macromolecules, big molecules made of smaller molecules). They include proteins, carbohydrates, and fat. Some macromolecules are more concentrated based on the amount of cal...
Which enzyme(s) is/are responsible for the chemical breakdown of carbohydrates? What pancreatic cells produce somatostatin? What does mechanical digestion in the stomach involve? What happens to food in the duodenum? What is the primary chemical reaction during enzymatic digestion? What enzymes class...
A polymer is made up of very large chains of molecules. The glue used in slime comprises long chains of polyvinyl acetate molecules (that’s why we recommend PVA glue). These chains slide past one another fairly easily, that keeps the glue flowing. Chemical bonds are formed when you mix t...
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...
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...
What are simple carbohydrates? Simple carbohydrates are smaller molecules of sugar unlike the long chains in starch. For example the individual sugars themselves – glucose, fructose and galactose ( monosaccharides ), or two sugars bonded together ( disaccharides ). ...
There are three ways in which plants have been found to be useful in medicine. First, plants are used directly as teas or in other forms for their natural constituents. Secondly, they can be used for the synthesis of drugs. Finally, organic molecules found in plants might be used as model...
Cats that eat only (or even predominantly) dry food are at greater risk than those that eat exclusively (or predominantly) wet food.Cats that previously had a urethral obstruction are at increased risk of obstructing again — especially if management and preventive measures haven't been ...
Additive manufacturing techniques are now utilized to produce food products. Modern 3D printers feature pre-loaded recipes and enable users to create customized food remotely via computers and smartphones. Users can tailor the texture, color, shape, flavor, and nutrition of the3D-printed foodto thei...