a substrate is the substance on which an enzyme operates. enzymes are biological catalysts that speed up chemical reactions by lowering the activation energy needed for the reaction. an enzyme is a protein that catalyses the conversion of a substrate reactant to a product in a chemical process....
Substitution reminds us that with the exception of the biological nutrient elements nitrogen, phosphorus and potassium, we do not need raw materials as such, but only properties and functions they can fulfil. Therefore, raw materials help us find solutions for functions. Various options are available...
the media, the transport system. It is even difficult to call them tools, rather it is a reflection of our activities. For simplicity, we will call everything that people do with their own hands a tool, meaning that they speed us up, make our ...
“Height is not just about height. It’s about the biological growth of an organism,” biologist Terence D. Capellini from Harvard University told Popular Science. Over millions of years, natural selection has influenced the way our organs (器官) grow and therefore the way our bodies grow too...
H2O2 is a by-product of respiration that is poisonous to living cells which have, as a consquence, evolved a highly efficient enzyme (a biological catalyst) that is able to destroy peroxide as quickly as it forms. Catalysts work by enabling a reaction to proceed by an alternative mechanism....
do this simply by looking at your watch every 5 or 10 minutes and noting down the page number you have reached. 3. Obviously there is little point in increasing your reading speed if you do not understand what you are reading. If you find you have lost the thread of the story, or ...
I’m not doing any physical research on this topic but I can help think through the limited discoveries we’re going to reach as humans on this concept. Currently we don’t really know a thing but we do know how to sound smart acknowledging our...
In the field of high fashion accessories, brands often do not specify the measurement spot causing the approval of the quality control step to be highly influenced by the arbitrariness of the operator. Hence, analytical estimators such as Cp and Cpk, fail to represent the correctness of a ...
Material composition and porosity; Accidents, alterations, and previous restorations or treatments; Type of exposure (contaminants, climatic conditions, anthropological activities); Colonization via biological or microbiological agents. By decreasing or counteracting the deterioration kinetics, it is possible to...