Using the model presented, what is represented by a? defend your answer.. a) a represents rna. translation is the synthesis of an rna copy of a segment of dna . b) a represents rna. transcription is the synthesis of an rna copy of a segment of dna . a represents protein. translation is the synthesis of a protein using dna as a template for the assembly of the protein d) a represents proteintranscription is the synthesis of a protein using dna as a template for the assembly of the protein.

B

Explanation:

Although we cannot see the model present, the only correct option here is B.

A cannot be correct, as translation represents the synthesis of protein from an RNA template.

C cannot be correct, as protein synthesis uses RNA as a template.

D cannot be correct, as transcription is the synthesis of RNA from DNA.

B is correct, as transcription is the synthesis of an RNA copy of a segment of DNA

answer; ///as energy flows through an ecosystem,energy (decreases) at each

it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.