Which of the Following Steps Has Not Yet Been Accomplished

question 31

Multiple Choice

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

• A)synthesis of small RNA polymers by ribozymes
• B)abiotic synthesis of polypeptides
• C)formation of molecular aggregates with selectively permeable membranes
• D)formation of protobionts that use DNA to direct the polymerization of amino acids
• E)abiotic synthesis of organic molecules

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Definitions:

Immune Response

The body's defense mechanism against pathogens, involving both specific and non-specific components.

Mucous Membranes

The moist linings of various body cavities, including the nose, mouth, lungs, and digestive tract, that secrete mucus.

Indirect Contact

A method of disease transmission where an infectious agent is transferred from one individual to another through a secondary object or person.

Pathogen

An agent, particularly a microorganism, that causes disease in its host.