Nitrogen 2 COPY Flashcards

1
Q

Which is the only amino acid that can loose its nitrogen by transamination?

A

Glutamate

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2
Q

How ammonia transported safely in the blood stream?

A

As glutamine

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3
Q

When is alanine made in the muscle and how?

A

Vigorously working muscles that operate anaerobically yield pyruvate that cannot be metabolised.

Pyruvate is converted to alanine and transported to the liver

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4
Q

What does the liver do with the pyruvate?

A

Gluconeogenesis

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5
Q

What is the charge of glutamate, glutamine and alanine?

A

Glutamate has a negative charge

Glutamine and alanine have no charge

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6
Q

What happens after the removal of the amino group in amino acids?

A

Carbon skeletons are converted to glucose or oxidised as part of the the citric acid cycle.

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7
Q

How many amino acids are essential?

A

There are 8

We need to get these from our diet

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8
Q

What are the two different types of ketone bodies?

A

Glucogenic and ketogenic

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9
Q

What are glucogenic carbon skeletons?

A

They feed into gluconeogenesis and so produce glucose or glycogen in the liver

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10
Q

What are ketogenic carbon skeletons?

A

They feed into acetoacetate or acetyl CoA (and cannot result in gluconeogenesis)

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11
Q

Which compound donates nitrogen into the urea cycle?

A

Carbomyl phosphate

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