Which of the following is true of gene expression in cells? Choose all that apply 1. Some genes are expressed
2. Some genes are repressed
3. A cell's entire genome (collection of genes) are always expressed
4. Stem cells are undifferentiated
5. Stem cells are differentiated
6. A differentiated cell can change which genes are active and which ones are not

please help meh taking a quiz and i have no idea what this answer is );

Name the organs of humanelemintary canal.

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.)

Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.