« previous next »

Author Question: Which of the following steps has not yet been accomplished by scientists studyin (Read 871 times)

penguins

  • Hero Member
  • *****
  • Posts: 903
on: Jul 12, 2013
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 protocells that use DNA to direct the polymerization of amino acids
E) abiotic synthesis of organic molecules


Millan

  • Sr. Member
  • ****
  • Posts: 368
Reply #1 on: Jul 13, 2013
I know it's D, we did this last week ;)


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

penguins

  • Hero Member
  • *****
  • Posts: 903
Reply #2 on: Jul 18, 2013
Thank you, thank you!!


« previous next »
 

Did you know?

It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

Did you know?

More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").

Did you know?

In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

The steps of the scientific method, also known as hypothesis testing The steps of the scientific method, also known as hypothesis testing
Steps of Infection via Viruses Steps of Infection via Viruses
The steps of wound repair. The steps of wound repair.
The 10 Steps to Better Test-Taking The 10 Steps to Better Test-Taking
Steps in the development of colorectal cancers Steps in the development of colorectal cancers
Proposed steps in the evolution of jaws Proposed steps in the evolution of jaws
Video: Energy inputs and release in glycolysis Animation

For a complete list of videos, visit our video library