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2 years ago

Which compound is a reusable, complex protein that speeds up chemical reactions?

2 answers:

5 0

Hello there!

The answer is enzymes.
Enzymes are biological catalysts, which means they decrease the amount of activation energy needed to start a reaction, therefore speeding up the rate of the reaction. They are part of the protein macromolecule group. Without them, our bodies would not process things efficiently or fast enough for us to live.

Hope I helped. Have a nice day.

Ludmilka [50]2 years ago

4 0

Answer:

An Enzyme

Explanation:

An enzyme is a protein that speeds up chemical reactions by bringing the reactants together. Enzymes can be used over and over again.

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A 10-7 is performed on a culture of bacteria in order to perform viable plate counts. From the dilution, *0.1 mL* of solution is

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Answer:

$66 * 10^8$ CFU/mL

Explanation:

Given -

a) Number of colonies of bacteria is equal to $66$

b) Total volume of the solution is equal to $0.1$ mL

c) Dilution factor is equal to $10^{-7}$

As we know that

CFU/mL $= \frac{N * DF}{V}$

Where N is the number of bacterial colonies, DF is the dilution factor and V is the volume

Substituting the given values in above equation, we get -

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2 years ago

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Explanation:

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1 year ago