A. They are composed of lipids. B. They speed up chemical reactions without being consumed. C. They are always composed of proteins. D. They slow down chemical reactions. E. They are only active at high temperatures. 相关知识点: 试题...
question 1 of 3 Enzymes are special proteins that ___ chemical reactions. Slow downDuplicate Speed upStabilize Worksheet PrintWorksheet 1. Salivary amylase is a type of ___ that helps break down carbohydrates that you eat. Substrate Enzyme ...
Explain how enzymes speed up chemical reactions. What is a factor that could speed up or slow down enzyme speed? What is an enzyme reaction? What are the characteristics of enzymes? (a) Describe how enzyme structure dictates enzyme function. (b) How can d...
Enzymes are biological catalysts that lower the activation energy needed for a reaction to occur. This means that more reactions can occur over a set amount time, so enzymes increase the rate of reaction. A typical role that enzymes play is breaking down large polymers into smaller monomers. Th...
Describe the structure and function of enzymes, and indicate how temperature and pH affect the rate of enzyme reactions. Explain how enzymes speed up chemical reactions. What is a factor that could speed up or slow down enzyme speed...
Because of enzymes, cells can manage millions of chemical reactions per second, making our bodies efficient at creating energy from the raw materials we provide. Some of the key roles that enzymes play include: Digestion– Digestive enzymes help the body break down larger complex molecules into sm...
ramped down to 98% A for 1 min and re-equilibrated at 98% A for 2 min. Analytes were detected using an Agilent DAD detector at a wavelength of 280 nm. Concentrations of TCS-G were determined using a standard curve of TCS-G (0-250 μM). Reaction curves were fit using ...
Always favorable, downhill reaction 左图:Hydrolysis;右图:Condensation Reverse: Condensation reaction (右上图) Water is formed when chemical groups are joined - unfavorable Biological polymers made from condensation reactions: Sugar - polysaccharide(starch, glycogen) ...
some proteins and others break down fats. The enzymes used to digest our food are extra-cellular since they are located outside our cells & enzymes inside our cells are intra-cellular enzymes. Enzymes are used in ALL chemical reactions in living things; this includes respiration, photosynthesis,...
Explain how enzymes speed up chemical reactions. What is a factor that could speed up or slow down enzyme speed? Describe the mechanism of enzyme action within chemical reactions. Include within your answer, information on how temperature and pH impact enzyme function. ...