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Anonymous users2024-02-08Enzymes are biological macromolecules with biocatalytic functions, that is, biocatalysts, which can speed up biochemical reactions, but do not change the direction and products of the reaction. In other words, enzymes can only be used to change the speed of various biochemical reactions, but not the biochemical reactions themselves. Enzyme is a substance composed of amino acids with special biological activity, which exists in all living animals and plants, and is an essential substance for maintaining the normal function of the body, digesting food, repairing tissues and other life activities.
Characteristics of enzymes: 1. High efficiency: The catalytic efficiency of enzymes is higher than that of inorganic catalysts, making the reaction rate faster; 2 Specificity:
An enzyme can only catalyze one or a class of substrates, such as proteases can only catalyze the hydrolysis of proteins into polypeptides; 3. Diversity: There are many types of enzymes, about 4,000 kinds; 4. Mildness: refers to the chemical reaction catalyzed by enzymes that are generally carried out under milder conditions.
5. Activity modulation: including inhibitor and activator regulation, feedback inhibition regulation, covalent modification regulation and allosteric regulation. 6 The catalytic properties of some enzymes are related to cofactors.
7. Denature, because most enzymes are proteins, they will be destroyed by high temperatures, strong acids, strong bases, etc. Factors influencing the rate of enzymatic reactions: The speed of enzymatic reactions is affected by enzyme concentration and substrate concentration, as well as temperature, pH, activators, and inhibitors.
1) Effect of enzyme concentration on enzymatic reaction speed, (2) Effect of substrate concentration on enzymatic reaction speed, (3) Effect of temperature on enzymatic reaction speed, (4) Effect of pH on enzymatic reaction speed, (5) Effect of activator on enzymatic reaction speed, (6) Effect of inhibitors on enzymatic reaction speed.
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Anonymous users2024-02-07It may be that the driving ability is relatively poor, it may be a mistake in judgment, it may be that the road condition information is more complicated, it may be that you do not understand the basic configuration of the car, it may be drunk driving, it may be fatigue driving.
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Anonymous users2024-02-06It may be improper driving, poor operation ability, drunk driving, fatigue driving, or weather conditions.
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Anonymous users2024-02-05Problems with the car, road conditions, surrounding conditions, not having a good rest, being tired, having a bad mentality, these are all things that can be affected.
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Anonymous users2024-02-04Drunk driving, fatigue driving, speeding, poor mental fitness and weather influences can all contribute to the wrong behavior of car drivers.
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Anonymous users2024-02-03Drink. Drug.
Drowsy driving.
The job of the excavator driver is mainly to operate the excavator and complete various engineering construction tasks. The excavator driver needs to master the operation technology of the excavator, be familiar with the performance parameters of various excavators, and be able to skillfully operate the excavator to complete the engineering task. When a problem occurs, the excavator driver needs to analyze the cause of the problem, find a solution, and take effective measures. >>>More
Affects internet speed. The main factors are as follows: 1. The configuration of the personal computer. (1) The core accessories of the computer, such as the processor. >>>More
1. URL length and static.
The length of the URL does affect the ranking of keywords, for example, when searching for a certain keyword, **promotion will rarely find that there is a very long URL in front, not only difficult to remember, but also too long to enter, so try to shorten the length of the URL, and then the static URL, although it does not affect the reading if it is not static, but some dynamic URLs will make the search engine crawl in an infinite loop, a serious waste of search engine resources, so in order to reduce the unnecessary work of the search engine, Static URLs can better increase the number of indexes. >>>More
Answer: 1. Factors that affect product pricing.
1. Product research and development. >>>More
Factors that affect operating profit are: operating income. >>>More