Chapter 3 - Chapter 3 Cells The Living Units 1 Each daughter cell resulting from mitotic cell division has exactly as many chromosomes as the

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Chapter 3: Cells: The Living Units 1) Each daughter cell resulting from mitotic cell division has exactly as many chromosomes as the parent cell. True 2) Apoptosis is programmed cell suicide, but cancer cells fail to undergo apoptosis. True 3) The spindle is formed by the migration of the chromatin. False 4) Final preparation for cell division is made during the cell life cycle subphase called G2. True 5) Chromatin consists of DNA and RNA. False 6) In osmosis, movement of water occurs toward the solution with the lower solute concentration. False 7) The genetic information is coded in DNA by the regular alternation of sugar and phosphate molecules. False 8) A process by which large particles may be taken into the cell for food, protection of the body, or for disposing of old True or dead cells is called phagocytosis. True 9) The orderly sequence of the phases of mitosis is prophase, metaphase, anaphase, and telophase. True 10) Diffusion is always from areas of greater to areas of lesser concentration. False 11) Facilitated diffusion always requires a carrier protein. False 12) Pressure caused by gravity is necessary for any filtration pressure to occur in the body. False 13) DNA transcription is another word for DNA replication. False 14) The glycocalyx is often referred to as the "cell coat," which is somewhat fuzzy and sticky with numerous cholesterol chains sticking out from the surface of the cell membrane. False 15) In their resting state, all body cells exhibit a resting membrane potential ranging from -50 to about +50 millivolts. False 16) Microfilaments are thin strands of the contractile protein myosin. False 17) Interstitial fluid represents one type of extracellular material. True 18) Hyperplasia generally means that an organ will increase in size due to the excessive formation of extracellular fluids. False 19) A chemical that inhibits DNA synthesis has yet to be found in aging cells. False 20) The cell (plasma) membrane normally contains substantial amounts of cholesterol. True 21) Aquaporins are believed to be present in red blood cells and kidney tubules, but very few other cells in the body. False 22) Most organelles are bounded by a membrane that is quite different in structure from the lipid bilayer of the plasma membrane. False 23) Only one cell type in the human body has a flagellum. True 24) Microtubules are hollow tubes made of subunits of the protein tubulin. True 25) Telomeres are the regions of chromosomes that code for the protein ubiquitin. False 26) Nitric oxide may act as a biological messenger. True 1) Which of the following is true regarding the generation of a membrane potential? A) Both potassium and sodium ions can "leak" through the cell membrane due to diffusion. B) In the polarized state, sodium and potassium ion concentrations are in static
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This note was uploaded on 07/24/2011 for the course BIO 201 taught by Professor Quintana during the Spring '10 term at TAMU Intl..

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Chapter 3 - Chapter 3 Cells The Living Units 1 Each daughter cell resulting from mitotic cell division has exactly as many chromosomes as the

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