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WINSTONCH [101]
4 years ago
11

Which is one source that scientists use to

Biology
2 answers:
ozzi4 years ago
8 0

Answer:

fossils frozen in glaciers.

Explanation:

Hope it helps.

Artemon [7]4 years ago
5 0

Answer:

a

Explanation:

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A doctor notices that a patient is having difficulty absorbing nutrients. Which structure is most likely involved in the patient
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What are the common properties of salt and glass?
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Properties of Salt

Crystals or white crystalline powder.

Transparent and colourless in crystalline form – rather like ice.

Crystallises in the isometric system, usually in the form of cubes.

Soluble in water (35.6g/100g at 0°C and 39.2g/100g at 100°).

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8 0
3 years ago
A couple plans to have children until they get a boy, but they agree that they will not have more than four children even if all
DiKsa [7]

Answer:

1.875  is the expected number of children the couple will have.

Explanation:

<em>The probability of an event </em><em>X</em><em> is denoted by </em><em>P(X)</em><em>.</em>

Let assume that X is the number of children to whom the couple will give birth. The couple can have at most <em>four children</em> with the following probabilities.

  • The couple will have one child if the first is boy, thus:

For one child P(X)=1/2=0.50

  • The couple will have two children if the first is girl and the second is a boy, thus:

For two children P(X)=0.5×0.5=0.25

  • The couple will have three children if the first two are girls and the third is a boy, thus:

For three children P(X)= 0.5×0.5×0.5=0.125

  • The couple will have four children if the first three are girls and the fourth is a boy, or if all the four are girls. thus:

For four children P(X) =(0.5×0.5×0.5×0.5)+(0.5×0.5×0.5×0.5)=0.125

<u>Now calculating the expected number of  children the couple will have:</u>

NOTE: Formula is given in the attached pic

Expected number of children = E(X)= (1×0.50)+(2×0.25)+(3×0.125)+(4×0.125)

E(X)= 1.875

5 0
3 years ago
The turnover number is defined as the maximum number of substrate molecules that can be converted into product molecules per uni
Andreyy89

Answer:

Vmax/ total enzyme concentration (Et)

Explanation:

According to the kinetics of Enzyme catalyzed reaction, the enzyme binds substrate and form the enzyme-substrate complex. The rate constant for this complex formation is K₁.

The enzyme complex later dissociates into the product and the enzyme itself ans the rate constant for this reaction is k₂. An enzyme-catalyzed reaction has the maximum velocity called Vmax.

The k₂ is also known as the turnover number which represents how many substrate molecules are converted into the products. The mathematical expression for this reaction is the:  

Vmax/ total enzyme concentration

Thus, Vmax/ total enzyme concentration (Et) is correct.

6 0
3 years ago
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