ASU BIO 181 Practice Test Solved

ASU BIO 181 Practice Test Solved Actin Filaments are present in: - The cell's cortex Microtubules are present in: - The cell's interior Cytokinesis in plant and animal cells takes two forms: - Animal: Contractile Ring Formation Plant: Phragmoplast Formation An important checkpoint regulator is at the Gap 2/M-phase transition. Here, Cyclin B and cdkl1 activate and form MPF which becomes a _____ _____ and causes DNA to condense into _____. - Histone Kinase Chromosomes The _____ begins to be destroyed at the Metaphase of the cell cycle causing the chromosomes to begin to _____. - Cyclin B1 Decondense The activation of both MPF and MAPK result in _____ _____ of the cytoplasm during M-phase. - Settling down MAPK has two different functions depending on where this Kinase acts in the _____ _____. If the Kinase becomes active during interphase, the cell is triggered to progress through the _____ _____. - Cell cycle Cell cycle Two types of second messengers discussed in lecture can exist downstream of a plasma membrane receptor. These are _____ and _____. - Cyclic AMP MAP Kinase There are two basic forms of cytoplasmic signaling (i.e signal transduction). One uses _____ and the other uses _____. - Protein Kinases Calcium Signal What is the difference between a single-pass transmembrane protein and a 7-pass transmembrane protein? - A single pass TMP is a singular protein that passes once through the bilayer. A 7-pass protein passes through the bilayer 7 times, creating a channel for ions to pass through. A single pass TMP cannot create an ion channel. Is a cancer cell anchorage independent and immortal, or is it anchorage dependent and mortal? Do they exhibit contact inhibition? - They are anchorage independent and immortal, and they do not exhibit contact inhibition, because they continue to grow despite their surroundings. If something is soluble in water, a hydration forms around it and it is termed: - Hydrophilic. What limits the paramecium from acquiring more complex functions? - The paramecium cannot fit any more biomachinery into its space. What limits an individual cell from becoming more complex? - Division of labor. T/F: In your own multicellular body, different cells have a division of labor between them: - True. T/F: A normal cell is anchorage-dependent for growth and mortal: - True. Comparing a single-celled Eukaryotic organism with a multi-cellular organism such as yourself, what is the major difference: - Division of labor. T/F: In your own multicellular body, cells with different functions have different DNA: - False. A single celled Eukaryotic organism: - Has a limited number of biomolecular machines Must find food, shelter, a mate, and reproduce Must escape from predators The paramecium discussed in class has contained an organelle called the contractile vacuole. This is the presumed precursor of the: - Kidney. T/F: A cell that is anchorage-dependent for growth will also exhibit contact inhibition: - True. In order to examine cells that are smaller than can be detected by the human eye, what needs to be used? - Technology. Compared to bacteria, which of the cell types are not responsible for finding food? - Lymphocyte Macrophage Fibroblast In cell biology, what can limit the progress of science? - Technology. T/F: The contractile vacuole of the paramecium is possibly an evolutionary precursor of the kidney: - True. T/F: A cancer cell will be anchorage-dependent for growth and immortal: - False. T/F: The paramecium swims by way of using a flagella: - False. T/F: The cytoskeleton allowed the primitive cell to become motile: - True. T/F: Ribosomes bound to some of the membrane invaginations in the endomembrane theory: - True.