9.  The cell membrane is composed of a lipid and a(n)  ________ component. A. hydrophilic                           B. hydrostatic                          C. hydromosaic                       D. hydrophobic

41.  Internal organelles are held in place by a ____________. A. cytoligaments                          B. cytoskeleton                              C. cytofibers                   D. cytopillars

35.  Which organelle consists of stacks of pancake-like membranous structures? A. Golgi                      B. ribosomes                          C. lysosomes                        D. peroxisomes  

47.  The structure which is continuous with the nuclear membrane is the _______.  A. DNA                            B. RER                            C. RNA                           D. DER  

17. A once free living organism now lives in all of our cells. This is now called a(n) _________. A. cellular motor                          B. mitochondrion                             C. ectondrion                               D. phagosome

26.  Ribosomes are structures where _________ are manufactured.   A. glycogen                     B. lysosomes                          C. SERs                         D. enzymes

19.  The goal of homeostasis is to make the extracellular fluid spaces _______ with those of the intracellular spaces. A. hypotonic                    B. isotonic                        C. hypertonic                       D. osmotonic

33.  A person with a broken femur must reabsorb the damaged bone cells and quickly begin the manufacture of new bone cells. Where would the body be able to get some extra calcium without stealing it from bones or muscles.  A.  plastids                          B. RER                     C. plasmids                          D. SER

31.  The first animal cells that were seen under a microscope were in  _______. A. a cork                      B. blood                          C. a sperm                     D. water

39.  Materials released by the endoplasmic reticulum and Golgi are moved about the cell in vesicles. When a vesicle interacts with the cell membrane so the material can be released into the extracellular fluids this is referred to as ________. A. exocytosis                             B. endorcytosis                             C. endocytosis                           D. epicytosis