ASU BIO 181 Exam 1 Questions and Answers 100% Verified

ASU BIO 181 Exam 1 Questions and Answers 100% Verified The association of ribosomes with _____ invaginations would support the _____ theory. - answermembrane, endomembrane After a cell is pancake shaped in a cell culture dish, the order of events that occurs as a cell walks is? - answerfilapodia, lamellipodia, cell muscle, retraction fiber T/F It is presumed that the peroxisomes evolved in these primitive, proto-eukaryotes to remove oxygen, which was toxic to the primitive cells. - answertrue T/F In an extant prokaryotic cell the outer boundary of life is the capsule. - answerfalse T/F When cancer cells are crowded by surrounding cells, the cancer cells become spherical and they can still go through cell division. - answertrue T/F Loss of the cell wall was required for the endomembrane system theory. - answertrue T/F Fluorescence microscopy is form of light microscopy - answertrue T/F Loss of the cell wall is required for the endosymbiotic theory. - answertrue T/F TEM provides a thin, two-dimensional section of the object being studied. - answertrue T/F The sytoskeleton enabled the primitive cell to become motile. - answertrue T/F the ancient earth did not contain much oxygen - answertrue A normal cell is _____ and ____ for growth. - answermortal, anchorage dependent T/F Ribosomes bound to some of the membrane invaginations in the endomembrane theory - answertrue T/F the cytoskeleton gave rise to the nuclear envelope - answerfalse What limits how big a cell can be? - answerthe surface area to volume ratio T/F DNA in extant prokaryotic cells is circular. - answerTrue Why did Motility improved the fitness of these early cells? - answerit allowed them to move away from predators and towards food T./F the end of the retraction fiber touching the cell culture plate still contains the cell equivalent of super glue. - answertru