Every one of us started out as a single cell that contained all our . the of each cell contains chromosomes. chromosomes are , which is . each cell contains pairs of chromosomes. are short segments of dna. they direct cells to . the human genome consists of . they also interact with . therefore, whether a gene is active or not is caused by .

Which of the following matches the organisms described with the correct domain? a. bacteria--unicellular, eukaryotic organisms with cell walls that do not contain peptidoglycanb. archaea--multicellular, eukaryotic organisms that do not have cell wallsc. eukarya--single-celled and multicellular organisms, with a defined nucleus and a variety of nutritional sourcesd. bacteria--unicellular, eukaryotic organisms that always lack cell walls

The human body needs energy in order to carry out life processes such as breathing. where does the body get this energy? a. from eating food b. from learning about new things c. from lying in the sun d. from sleeping

Based on the data in the graphs do you think pepsin and trypsin are found in the same part of the body? explain your answer.