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lidiya [134]
3 years ago
12

The protein keratin is composed of two helical strands that wrap around each other in what is called a coiled coil. The two stra

nds remain in contact with each other over the entire length of the protein via hydrophobic interactions. What amino acid might you predict occupies multiple sites along the entire length of the keratin sequence?
Chemistry
1 answer:
kenny6666 [7]3 years ago
7 0

Answer: Alanine, leucine, arginine, cysteine are the polypeptides that are mostly present in the alpha-helix structure of keratin.

Explanation:

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ValentinkaMS [17]

Answer:

The answer is Facilitated Diffusion

Explanation:

Osmosis is most similar to facilitated diffusion.

Osmosis can be defined as : Osmosis is the movement of water molecules across a semi-permeable membrane, down a concentration gradient from a low concentrated solution into a more concentrated solution.

Facilitated diffusion is defined as: Facilitated diffusion is the flow of molecules requiring the aid of a protein, across a membrane, down a concentration gradient  from a low concentrated solution into a more concentrated one.

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Answer:

The correct answer will be option-D.

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The semi-conservative mode of replication is the common method of replication used by mostly organisms on earth which were demonstrated by the Meselson and Stahl in 1958.

They used the isotopes of the nitrogen which contains extra neuron which makes the nitrogen-heavy and cultured them in bacteria

The experiment concluded that newly replicated double stranded DNA contains one newly synthesized DNA strand which is complementary to another parental strand. Thus new DNA molecule has one parental strand while other newly synthesized strand.

This is best illustrated by the option-D in the figure and therefore is the correct answer.

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