Can anyone tell me how the following numbers are calculated???? 20

In 1963, the Enzymology Committee of the International Biochemical Association recommended the use of international units (IU) to uniformly express the magnitude of enzyme activity.

In 1976, the unit of enzyme activity was defined as the amount of enzyme that can convert 1 mol of substrate in 1 min under specific conditions, that is, 1IU = 1 mol minAt present, most clinical laboratories at home and abroad often omit the word international, that is, IU is abbreviated as U

In 1979, the International Biochemical Association recommended the use of KATAL units (also known as arush doses) in order to make the reaction rate of enzyme activity units consistent with the International System of Units (SI).That is, the amount of enzyme catalyzed to convert 1 mol of substrate per second (s) clock under the specified conditions, i.e., 1katal=

In China's legal unit of measurement, the unit of enzyme catalytic activity is katal, which is often expressed by mkatal or nkatal because the amount of enzyme in plasma is too large. The relationship between IU and Katal is as follows: 1Katal = 6000U, 1U =

What is the relationship between the unit of the enzymatic fraction of biochemistry, cpm and U mg 20

What is the relationship between CPM and U MG? What does each of them mean? Please put it in professional language, thank you.

There are 2 units of enzyme activity size, kat and u

The amount of enzyme that can convert 1 mol of substrate in 1 min is called 1 enzyme unit (U).

The amount of enzyme that can convert 1mol of substrate in 1s is 1KATAL (KAT for short).

Their conversions are as follows.

1kat=6*10^7 u

1u= kat

In addition, there is also an enzyme activity unit called specific activity, which refers to the enzyme activity per unit mass of sample, that is, the number of U per mg of protein or the number of kat per kg of protein.

U mg refers to the number of U contained in 1mg of protein, and as for Mu mg, it naturally refers to the number of mu contained in 1mg of protein.

When you say cpm, you probably mean the number of substrates converted per minute, i.e. 1cpm = 1kat 1kg

Because.. I haven't seen cpm either. If you look at it from the International System of Units this is so.

You can do the math yourself.

You may be mistaking 4ml of solution for only 200,000.

Dissolve 800,000 to 4ml, the total amount is still 800,000, and the concentration is equivalent to 200,000 per ml.

Then take a milliliter of solution of this concentration, and simply calculate that it contains 20,000 ah.

The same is true for the rest of the world.

Carry out trigonometric operations first, and then directly substitute the formula into the formula. Friend.

For reference, please smile.

20,000 is the principal.

It's profit. It's the tax rate.

k=1。。。k=5, the sum of the formulas brought in. k

0 seems to be a bit of a problem.

Isn't the steps clearly written ==

=（4a²-b²）（x-y）

2a+b）（2a-b）（x-y）

If you don't understand it, ask me again I will say more details, I wish you progress in your studies!