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OlgaM077 [116]
3 years ago
7

Which of the following steps has not yet been accomplished by scientists studying the origin of life?

Biology
1 answer:
EastWind [94]3 years ago
3 0

Answer:

The correct answer is option c. "formation of protocells that use DNA to direct the polymerization of amino acids".

Explanation:

The polymerization of amino acids is a complex biological function that involves multiple proteins and cofactors working together at different locations in the cell. Even though there are some scientific advances in the production of synthetic protocells (cell like structures made from synthetic particles), the formation of protocells able to synthesize amino acids from DNA directly has not been accomplished.

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irina1246 [14]

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What levels of protein structure would be affected if all hydrogen bonding interactions were prevented? check all that apply?
fgiga [73]

The proteins exhibit four levels of organization:  

1. Primary structure: It refers to a sequence of amino acids join together by the peptide bonds to produce a polypeptide chain.  

2. Secondary structure: It is a localized twisting of the polypeptide chain by producing a hydrogen bond. Two types are formed, that is, the alpha helix and beta pleated sheet.  

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6 0
3 years ago
How much space is there between particles of frozen water?
denpristay [2]

Explanation:

When water turns to ice, it expands/contracts

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Which of the following functions does active transport perform in a cell ?
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