There are two competing hypotheses put forth to explain the origin of eukaryotic cells. which of the following correctly states one of these hypotheses? question options:

ancient eukaryotic cells resembling archaeal cells first acquired symbiotic cyanobacteria that eventually took up permanent residence to become chloroplasts.
a symbiotic relationship between cyanobacteria and proteobacteria created the first ancient eukaryotic cell.
two types of prokaryotic cells, one of which was photosynthetic, fused to become the first ancient eukaryotic cell.
ancient eukaryotic cells resembling archaeal cells first acquired symbiotic bacteria that eventually took up permanent residence to become mitochondria.

How many variables are altered in a good experiment? a.1 b.0 c.2 d.3

What molecules does hemoglobin decay into over time

Ms. w, a 21-year-old woman, came into a clinic after suffering a deep laceration on her foot while walking barefoot around her yard. the wound was cleaned, sutured, and bandaged, and she was released to return home after receiving tetanus antitoxoid. within 72 hours, the wound area was red and swollen, the suture line was dark in color, and it was accompanied by severe throbbing pain. ms. w had a high fever, her heart felt like it was racing, and she was finding it hard to concentraten even on simple tasks. she returned to the clinic and was immediately taken to the hospital. following lab tests, a diagnosis of acute necrotizing fasciitis was made. discussion questions 1. explain why ms. w. received a tetanus antitoxoid before leaving the hospital. (see chapters 3 and 4, infection and passive immunity.) 2. explain how acute necrotizing fasciitis developed in this case and the pathophysiology involved. (see acute necrotizing fasciitis.) 3. what is the potential outcome for ms. w if antibiotic drugs do not reduce the infection quickly?