You have a mixture of three proteins X, Y, and Z.a. X is positively charged, has a mass of 100 kDa, it binds sugars.
b. Y is positively charged, has a mass of 200 kDa, it does not bind sugars.
c. Z is negatively charged, has a mass of 100 kDa, it does not bind sugars.

What will be the most efficient method to purify protein X from the mixture of X, Y, and Z?

i. washing
ii. drying
iii. ion-exchange chromatography
iv. gel filtration chromatography
v. affinity chromatography

Answers

Answer 1

Answer:

Answer:

iii. ion-exchange chromatography

Explanation:

We have to purify the proteins and column chromatography is used widely for the purification of proteins. Ion-Exchange chromatography is also a type of column chromatography.

When the sugar binding protein X passes through the column, the sugar and proteins binds together by exchanging ions and coagulated out no matter what the nature of charge on proteins...

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Answers

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Explanation:

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Answers

Answer:

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Explanation:

Keiko’s teacher was discussing the theory of endosymbiosis. She asked Keiko to mark the organelles in the diagram that most closely resembled prokaryotes. Which organelles should Keiko mark?

Answers

Answer:

The correct answer would be mitochondria or chloroplast.

Endosymbiosis refers to the evolution theory which explains the origin of eukaryotic cells from prokaryotic cells.

It is believed that cell organelles like chloroplast, mitochondria et cetera were free-living early prokaryotic cells which were taken inside the other cells by the process of endosymbiosis. It led to the origin of eukaryotic cells which were able to perform photosynthesis.

Thus, Keiko should mark chloroplast or mitochondria in the diagram.

Answer:

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Explanation:

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Answers

Answer: c. The cuticle prevents water loss in a terrestrial environment.

Explanation:

The earthworms have a thin cuticle outside their epidermis. The cuticle performs different functions in the worm body. The cuticle protects the worm from predators. The thin cuticle remains moist with the slimy mucus. The cuticle helps in the exchange of gases from the external environment. The cuticle helps in absorbing the oxygen from the external environment whereas it expels the carbon dioxide to the external environment. The cuticle prevents the loss of moisture and allows the gaseous exchange which facilitates the survival of the worm in a harsh terrestrial environment.

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Answers

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Explanation:

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