In eukaryotes, the wrapping of dna around nucleosomes introduces negative supercoiling. why?

Wht happens as electrons in the electron transport chain release their energy

Which organism is the producer in this food web? 7th grade question. a) arthropods b) birds c) fungi d) plants

Use the drop-down menu to match the following definitions to the corresponding terms. the total variety of organisms that live in the biosphere a group of organisms that breed and produce offspring that can breed all of the biotic and abiotic factors in an area