¿cual es la importancia de la biologia en la actualidad?

Biology

1 answer:

irakobra [83]3 years ago

5 0

No English or no epytu was a good morning and yes yes you are right I don’t want you in your

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Please help me!!!!!! i’m stuck. 19 points!!!!!

rewona [7]

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<h2><u><em>TRIPIN</em></u></h2>

8 0

3 years ago

What is the function of a cell’s selectively permeable plasma membrane?

salantis [7]

<h2>The correct answer is explained below:</h2>

Explanation:

The plasma membrane of a cell is selectively permeable.
This means that the membrane specifically allows only certain molecules to move across it from the interior of the cell to the exterior or from the exterior of the cell to the interior.
The functions of such selective permeability of the membrane are:

It allows only those polar or non polar molecules or ions to traverse them and enter into the cell which are necessary for the cell metabolism or other functions of the cell.
It removes those ions or molecules from the cell interior to the cell exterior which are not necessary for the cells.
It prevents the movement of essential cellular components like non-polar or polar molecules, ions, amino acids, fatty acids, or carbohydrates from the cell interior to the cell exterior.
It prevents the movement of those molecules from the cell exterior to the cell interior which are not essential for the cell functioning.

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3 years ago

When you chew on food are you causing a physical or chemical change

8_murik_8 [283]

<span>Chewing food Is both a Physical and Chemical change. Digestions begins in the mouth when food is chewed, it is mixed with enzymes from our spit (saliva) which is a chemical change and it breaks down the food. When you chew, You break the food into smaller chunks, making it more little and little as you chew which is a Physical change. </span>

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3 years ago

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kotegsom [21]

Answer:

??? wdym

Explanation:

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3 years ago

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Cultures of a bacterial species were incubated on the shelf of a refrigerator, out on a lab bench top, on the shelf of a 37°C in

Oksana_A [137]

Answer:

D. Psychrophile

Explanation:

Psychrophiles or cryophiles are a type of extremophiles i.e. they live in extreme environment. They grow well in low temperatures ranging from -20 to +10 degree Celsius.

Here, the bacteria was incubated at different temperatures. It did not show growth at standard incubation temperature of 37°C which indicates that it might be an extremophile preferring either very hot or very cold environment. But it also did not show growth at 50°C which means that it does not survive well at high temperature.

Lab bench top has generally colder surface compared to the surrounding environment and a little growth was observed there which indicates that this bacteria might require cold temperature for growth. The result was finally confirmed with abundant growth observed inside refrigerator which is only possible if it is a psychrophile.

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3 years ago