Gas exchange is the process of obtaining oxygen either directly from the air as in the case of unicellular organisms or by a respiratory system as in the case of multicellular organisms and releasing...
Nucleic acids They are biological macromolecules ( polymers ) made up of many smaller molecules ( monomers ) called nucleotides , Nucleic acids are composed of hydrogen , oxygen , nitrogen , carbon and...
What are the gens? They are the parts of DNA present on the chromosomes and they control the individual’s hereditary traits, And the hereditary traits are transferred from the parents to their offspring through...
