Which of the following statements are true of the cell membrane? i. composed of proteins and lipids ii. composed of proteins and cellulose iii. located in animal cells iv. located in plant cells v. semipermeable vi. not permeable at all

How do the 2 types of endoplasmic reticulum differ?

All living organisms are composed of a. only one cell. b. at least 100 cells. c. at least three cells. d. one or more cells.

Cpr, or cardiopulmonary resuscitation, is a first-aid technique to save lives. it involves compressions of the patient's chest cavity. which description is the best description of the functions of chest compressions in cpr? chest compressions are done to pump the heart. chest compressions are done to strengthen the rib bones. chest compressions increase carbon dioxide inhalation. chest compressions allow the patient's muscles to wake up.