ASU Bio 181 Exam 1 questions and answers well illustrated.

ASU Bio 181 Exam 1 questions and answers well illustrated. The association of ribosomes with _____ invaginations would support the _____ theory. - correct ane, endomembrane After a cell is pancake shaped in a cell culture dish, the order of events that occurs as a cell walks is? - correct odia, 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. - correct T/F In an extant prokaryotic cell the outer boundary of life is the capsule. - correct T/F When cancer cells are crowded by surrounding cells, the cancer cells become spherical and they can still go through cell division. - correct T/F Loss of the cell wall was required for the endomembrane system theory. - correct T/F Fluorescence microscopy is form of light microscopy - correct T/F Loss of the cell wall is required for the endosymbiotic theory. - correct T/F TEM provides a thin, two-dimensional section of the object being studied. - correct T/F The sytoskeleton enabled the primitive cell to become motile. - correct T/F the ancient earth did not contain much oxygen - correct A normal cell is _____ and ____ for growth. - correct l, anchorage dependent T/F Ribosomes bound to some of the membrane invaginations in the endomembrane theory - correct T/F the cytoskeleton gave rise to the nuclear envelope - correct What limits how big a cell can be? - correct surface area to volume ratio T/F DNA in extant prokaryotic cells is circular. - correct answers.True Why did Motility improved the fitness of these early cells? - correct 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. - correct T/F the presumed first step in the transition of the primitive, proto-prokaryotic cell into the primitive, proto-eukaryotic cell was the loss of the cell wall. - correct 1n order to examine cells which are smaller than can be detected by the human senses what needs to be used ? - correct ology A cell that is itself an organism must have a minimum of four needs presented in lecture - correct food, find shelter, find mate, and reproduce. compared to bacteria which of the cell types below are not responsible for finding food? - correct ocyte, macrophage, and fibroblast T/F In your own mulitcellular body, different cells in your body have a division of labor between them. - correct T/F The paramecium swims by way of using a flagella - correct T/F A normal cell is anchorage-dependent for growth and mortal - correct what limits the paramecium from acquiring more complex functions? - correct t fit anymore biomachinery into its space comparing a singled cell eukaryotic organism with a multicellular organism such as yourself identify the major difference from the list below. - correct ion of labor in the cell biology what can limit the progress of science - correct ology T/F a cell that is anchorage-dependent for growth will also exhibit contact inhibiton. - correct explain what limits an individual cell from becoming more complex - correct idual cell have a limit number of biomolecular machines. In a multicellular organism you get a division of labor between different cell types so that the whole can do more than the sum of the parts with similar number of biomolecular machines per cell. T/F the contractile vacuole of the paramecium is possibly an evolutionary of the kidney - correct a singled celled eukaryotic organism - correct a limited number of biomolecular machines must find food, shelter, a mate and reproduce escape from predators the paramecium discussed in class contained an organelle the contractile vacuole. this is the presumed precursor of the: - correct y T/F in your own multicellular body, cell with functions have different DNA. - correct answers.False T/F A cancer cell will be anchorage-dependent for growth and immortal - correct if something is soluble in water a of hydration forms around it and it is termed. - correct philic T/F active transport uses ATP to move components in parallel with their concentration gradient, that is: from a high concentration to a low concentartion - correct facilitated diffusion uses a channel to let components move down their concentration gradient. - correct T/F a single pass trans-membrane protein that is an alpha helix can make a channel. - correct when a vesicle fuses with the plasma membrane the contents of the lumen of the vesicle are - correct ds that are used in cell communication T/F the ER is contiguous with the golgi apparatus - correct amino acids can be largely subdivided into groups. what are the two groups - correct phobic and hydrophlic what are the orphaned organelles orphaned from? - correct are mitochrondria and chloroplast and they orphaned from the endomembrane system what is the difference between a single pass transmembrane protein and a 7 pass transmembrane protein? - correct e is singular protein that passes once through the bilayer and cannot create ion channel. a 7 passes through the bilayer 7 times creating channels for ion passage. for protein to enter the endoplasmic reticulum as part of the endoplasmic reticulum's lumen or part of the endoplasmic reticulum membrane: - correct answers.a ribosome binds to the mRNA and a short stretch of protein is synthesized that contains a signal sequence. we are made up of ____ percent water - correct answers.50-70