Which of the following is an accurate statement about ecosystems? A) There is a continuous process by which energy is lost as heat, and chemical
elements leave the ecosystem through runoff.

B) Energy is recycled through the trophic structure.
C) Chemicals are recycled between the biotic and abiotic sectors, whereas energy
makes a one-way trip through the food web and is eventually dissipated as heat.
D)A food web shows that all trophic levels may feed off each other.
E) Energy is usually captured from sunlight by primary producers, passed to secondary consumers in the form of organic compounds and lost to detrivoresIn in the form of heat.

Proteins are the workhorses of the cell, controlling virtually every reaction within as well as providing structure and serving as signals to other cells. proteins are long chains of  amino acids  , and the exact sequence of the amino acids determines the final structure and function of the protein. instructions for that sequence are encoded in  genes  . to make a particular protein, a messenger ribonucleic acid (mrna) copy is made from the gene (in the process called  transcription  ), and the mrna is transported to the  ribosome  . protein synthesis, also called  translation  , begins when the two ribosomal subunits link onto the mrna. this step, called initiation, is followed by elongation, in which successive amino acids are added to the growing chain, brought in by transfer rnas (trnas). in this step, the ribosome reads the  nucleotides  of mrna three by three, in units called  codons  , and matches each to three nucleotides on the trna, called the anticodon. finally, during termination, the ribosome unbinds from the mrna, and the  amino acid  chain goes on to be processed and folded to make the final, functional protein

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what are the options