Do all eukaryotic cells contain a cell wall

What best explains the inability for life to exist in earth early atmosphere

In which of the following relationships is one organism always benefited while the other organism is always harmed

Anurse is preparing to administer ampicillin 500 mg in 50 ml of dextrose 5% in water (d5w) to infuse over 15 min. the drop factor of the manual iv tubing is 10 gtt/ml. the nurse should set the manual iv infusion to deliver how many gtt/min? (round the answer to the nearest whole number. use a leading zero if it applies. do not use a trailing zero.)