What elements differentiate the amino acids of a protein from the sugars of a carbohydrate?

According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes

Explain why autonomous underwater explorers (aue) will provide entirely new kinds of information about ocean processes

The part of the eye that closes and opens to let light in is .