B. Each enzyme catalyzes only a certain reaction or set of reactions.
Answer:
to renewable energy; this is because of the high levels of limitations from ... These categories of barriers are political and regulatory, technical ... This means that it will be hard to replace coal as a source of energy, ... forms of energy, because people usually prefer to use what is readily available to them.
first step in protein production is the transcription of DNA to mRNA in the nucleus. the next organelles involved are ribosomes. if the protein is not destined to the cell membrane the mRNA is translated on a cytoplasmic free-floating ribosome
