Self-Checks - Bio 181 questions and answers | Bio 181 Module 1-16 Self Check _all answers (2021/2022)

Self-Checks - Bio 181 Module 1 Self Check 1. The paramecium swims by way of using a flagella. • False 2. In order to examine cells which are smaller than can be detected by the human senses, what needs to be used? (pick the best answer). • Technology 3. A normal cell is anchorage-dependent for growth and mortal. • True 4. A single-celled eukaryotic organism: • A,B,C, above 5. In your own multicellular body, different cells in your body have a division of labor between them. • True 6. In your own multicellular body, cells with different functions have different DNA. • False 7. Compared to bacteria which of the cell types below are not responsible for finding food • A, B, C 8. A cell that is anchorage-dependent for growth will also exhibit contact inhibition. • True 9. In Cell Biology what can limit the progress of science? • Technology 10. A cancer cell will be anchorage-dependent for growth and immortal. • False 11. The contractile vacuole of the paramecium is possibly an evolutionary precursor of the kidney. • True 12. The paramecium discussed in class contained an organelle calledthe contractile vacuole. This is the presumed precursor of the: • Kidney 13. Comparing a single-celled eukaryotic organism with a multicellular organism such as yourself identify the major difference from the list below. • Division of labor 14. A cell that is itself an organism must have a minimum of four needs presented in lecture. List these four things. • Food, shelter, reproduce, and mating 15. Write a few sentences that explain what limits an individual cellfrom becoming more complex. • There are a few things that limit an individual cell from becoming more complex and that would include having a limited number of biomolecular machines which affects the S - The Marketplace to Buy and Sell your Study Material division of labor. 16. What limits the paramecium from acquiring more complex functions? S - The Marketplace to Buy and Sell your Study Material • Since it is a single celled organism there is only so much space in the cytoplasm and therefore the number of biomolecular machines that it can contain limits it from acquiring more complex functions. Module 2 Self Check 1. A normal cell is and for growth. • Mortal, anchorage dependent 2. In an extant prokaryotic cell, the outer boundary of life is the capsule. • False 3. The cytoskeleton enabled the primitive cell to become motile. • True 4. Loss of the cell wall is required for the endosymbiotic theory. • True 5. DNA in extant prokaryotic cells is circular. • True 6. It is presumed that the peroxisomes evolved in these primitive, protoeukaryotes to remove oxygen, which was toxic to the primitive cells. • True 7. What limits how big a cell can be? • The surface area to volume ratio 8. The presumed first step in the transition of the primitive, protoprokaryotic cell into the primitive, proto-eukaryotic cell was the loss of the cell wall. • True 9. List one limitation of the cell culture technique. • Not all cells grow in culture 10. Ribosomes bound to some of the membrane invaginations in the endomembrane theory. • True 11. The cytoskeleton gave rise to the nuclear envelope. • False 12. The ancient earth did not contain much oxygen. • True 13. Finish the sentence based on my lectures: The association of ribosomes with invaginations would support the theory. • Membrane, endomembrane 14. Fluorescence microscopy is a form of light microscopy. • True 15. The end of the retraction fiber touching the cell culture plate still contains the cell equivalent of super-glue. • True 16. TEM provides a thin, two-dimensional section of the object being studied. • True 17. Motility improved the fitness of these early cells because: