In the early 1900s a scientist hypothesized a link between dna and the production of proteins in the cytoplasm. however, the fact that dna could not be found outside the nucleus led scientists to believe that another substance was also involved in the synthesis of protein in the cytoplasm. in the 1940s scientists performed an experiment that ultimately identified the site of protein synthesis. they also identified the molecule responsible for transporting information from the nucleus to the site of protein synthesis. what was this newly identified molecule?

an adaptation is a change or process by which an organism takes to be better suited for its environment. for example; migration is a behavioral adaptation, this is needed because birds are not built to last extremely cold climates. there are different adaptations because there are different species needing to adjust to different things, bears don't migrate; they hibernate.

the right answer is a. skin cells forming from sunlight.

the liver is an organ endowed with a fantastic ability to regenerate

. thus, if a hepatectomy (ablation) of 70% of the hepatic mass is performed in the rat, there is complete recovery in 7 to 10 days.

prokaryotes are beings that have existed since the existence of life on earth, and do not come from another realm.

ribosomes are organelles that exist naturally in eukaryotes, either in free form or attached to the endoplasmic reticulum.

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