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3 years ago

What is a real world example of a molecular pump in the human body?

2 answers:

7 0

There are many cells in your body that use pumps to move molecules. For example, your nerve cells (neurons) would not send messages to your brain unless you had protein pumps moving molecules by active transport. The sodium-potassium pump (Figure below) is an example of an active transport pump! Have a nice day

Alja [10]3 years ago

6 0

Answer:

The most common example of a molecular pump in the human body is the pump for sodium and potassium.

Explanation:

Sodium ions and ATP bind to the pump to use energy to change the shape. The sodium then leaves and the potassium can now bind due to the shape change. The potassium ions are then released and the pump goes back to normal for the cycle to repeat again.

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What is the vent in earths surface through which magma and gases are expelled

lutik1710 [3]

Answer:

A volcano

Explanation:

Is a vent or fissure in the Earth's surface through which molten rock and gases are expelled. Molten rock is called magma.

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3 years ago

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3 years ago

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Explain this statement in your own words. “Photosynthesis is an essential process for all life on Earth because it is the set of

natima [27]

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4 years ago

Las consecuencias de la sobreexplotación de los recursos naturales

alexira [117]

Answer:

Destrucción de hábitats naturales, tanto terrestres como marinos y otros acuáticos. Destrucción de ecosistemas de todo tipo. Extinción de especies animales y vegetales. Interrupción de las redes y relaciones tróficas.

Explanation:

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3 years ago

Imagine you are a student trying to decode the genetic code. An artificial mRNA molecule consisting of poly-CA (5ʹ... CACACACACA

Semmy [17]

Answer:

ACA: Threonine

CAC: Histidine

Explanation:

To answer this question we need to remember that the ribosome reads every three bases or 'codon' in order to assign the right tRNA carrying the amino acid.

In the first artificial mRNA we see two patterns of three letter:

CAC and ACA.

In the second artificial mRNA we are able to identify three different patterns:

CAA

AAC

ACA

And they repeat, so we end with three different polypeptides: polythreonine, polyglutamine and polyasparagine. This will depend on the initial letter the ribosome starts reading.

The only amino acid that repeats in both artificial mRNAs is Threonine, and we see its pattern ACA also repeated.

So, we could assign this codon (ACA) to threonine.

We can then assume that the pattern CAC codifies for histidine since we only get this two polypeptides in the first mRNA.

Lastly with the information provided we cannot determine the codons AAC and CAA for glutamine or asparagine. We would need further experiments.

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3 years ago