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| 6251791347 | When biologist wish to study the internal ultrastructure of cells, they can achieve the finest resolution by using : | a Transmission Electronic Microscope (pg. 96 TEM definition) | 0 | |
| 6251820789 | The advantage if light microscopy over electron microscopy is that : | light microscopy allows one to view dynamic processes in living cells ( pg.96 3rd paragraph) | 1 | |
| 6251901587 | A primary objective of cell fractionation is : | separate the major organelles so that their particular functions can be determined ( pg. 97 cell fractionation definition ) | 2 | |
| 6251935677 | In the fractionation of homogenized cells using centrifugation, the primary factor that determines whether a specific cellular component ends up in the supernatant or pellet is : | the size and weight of the component ( pg. 97 1st paragraph) | 3 | |
| 6251967799 | Which of the following correctly lists the order in which cellular components will be found in the pellet when homogenized cells are treated with increasingly rapid spins in a centrifuge : | Nucleus, Mitochondria, Ribosomes ( pg. 96 fig. 6.4) | 4 | |
| 6252031141 | Green fluorescent protein (GFP) can be used to fluorescently label a specific protein in cells by genetically engineering cells to synthesize the target protein fused to GFP. What is the advantage of using GFP fusions to visualize specific proteins, instead of staining cells with fluorescently labeled probes that bind to the target protein : | GFP fusions enable one to track changes in the location of the protein in living cells; staining usually requires preserved cells (pg. 95 fig. 6.3) | 5 | |
| 6252055089 | What is the reason that a modern electron microscope (TEM) can resolve biological images to the subnanometer level, as opposed to tens of nanometers achievable for the best super-resolution light microscope : | electron beams have much shorter wavelengths than visible light ( pg.94 paragraph 4) | 6 | |
| 6252092771 | what technique would be most appropriate to use to observe the movements of condensed chromosomes during cell division : | light microscopy | 7 | |
| 6252157738 | All the following are part of a prokaryotic cell except : | Endoplasmic reticulum ( pg.97 fig 6.5) | 8 | |
| 6252239355 | The volume enclosed by the plasma membrane of plant cells is often much larger than the corresponding volume in animal cells. The most reasonable explanation for this observation is that: | plant cells captain a large vacuole that reduces the volume of the cytoplasm ( pg. 101 fig. 6.8) | 9 | |
| 6252571386 | A mycoplasma is an organism with a diameter between 0.1 and 1.0 µm. What does the organism's size tell you about how it might be classified? | It could be a very small bacterium. | 10 | |
| 6252575617 | Which of the following is a major cause of the size limits for certain types of cells? | the need for a surface area of sufficient area to support the cell's metabolic needs | 11 | |
| 6252578855 | Which of the following statements concerning bacteria and archaea cells is correct? | Archaea cells contain small membrane-enclosed organelles; bacteria do not. | 12 | |
| 6259364479 | the evolution of eukaryotic cells most likely involved : | endosymbiosis of an aerobic bacterium in a larger host cell- the endosymbiont evolved into mitochondria | 13 | |
| 6259408315 | prokaryotes are classified as belonging to two different domains : | bacterium & archaea | 14 | |
| 6259426491 | if radioactive dTTP is added to a culture of rapidly growing bacterial cells, where in the cell would you expect to find the greatest concentration of radioactivity : | nucleoid | 15 | |
| 6259450822 | which organelle or structure is absent in plant cells : | centrosomes | 16 | |
| 6259461832 | large numbers of ribosomes are present in cells that specialize in producing : | proteins | 17 | |
| 6259490970 | the nucleus lamina is an array of filaments on the membrane. if a method were found that could cause the lamina to fall into disarray, what would you expect too be the most likely consequence : | a change in the shape of the nucleus | 18 | |
| 6259517831 | recent evidence shows that when chromosomes decondense during interphase, their DNA molecules do not intermingle. Instead, they occupy distinct territories with the nucleus. Considering the location of the following structures, which is most likely to be involved in chromosome location : | the nuclear matrix | 19 | |
| 6259633278 | A cell with a predominance of free ribosomes is most likely : | producing primarily cytoplasmic proteins | 20 | |
| 6259646843 | Which type of organelle or structure is involved in the synthesis of oils, phospholipids, and steroids : | smooth endoplasmic reticulum | 21 | |
| 6259656809 | which structure is the site of the synthesis of proteins that may be exported from the cell : | rough endoplasmic reticulum | 22 | |
| 6259672519 | the Golgi apparatus has a polarity or sidedness to its structure and functions. Which of the following describes this polarity : | All of the above | 23 | |
| 6259688414 | the fact that the outer membrane of the nuclear envelope has bound ribosomes allows one to most reliable conclude that : | at least some of the proteins that function in the nuclear envelope are made by the ribosomes on the nuclear envelope | 24 | |
| 6259713687 | the difference in lipid and protein composition between the membranes of the endomembrane system is largely determined by : | the function of the golgi apparatus in spring and directing membrane components. | 25 | |
| 6259729469 | Hydrolytic enzymes must be segregated and packaged to prevent general destruction of cellular components. which of the following organelles contains these hydrolytic enzymes in animal cells : | lysosomes | 26 | |
| 6259743379 | which of the following statements correctly describes some aspect of protein secretion from prokaryotic cells : | proteins that are secreted by prokaryotes are synthesized on ribosomes that are bound to the cytoplasmic surface of the plasma membrane. | 27 | |
| 6259776014 | tay-sacks disease is human genetic abnormality that results in cells accumulating and becoming clogged with very large and complex lipids. Which organelle must be involved in the condition : | lysosomes | 28 | |
| 6259788669 | the liver is involved in detoxification of many poisons and drugs. Which of the following structures is primarily involved in this process and therefore abundant in liver cells : | Smooth ER | 29 | |
| 6259797711 | which of the following produces and modifies polysaccharides that will be secreted : | golgi apparatus | 30 | |
| 6259805721 | which of the following contains hydrolytic enzymes : | lysosomes | 31 | |
| 6259811488 | which organelle often takes up much of the volume of a plant cell : | vacuole | 32 | |
| 6259826135 | which organelle is the primary site of ATP synthesis on eukaryotic cells | mitochondrion | 33 | |
| 6259834381 | which plant cell organelle contains its own DNA and ribosomes | mitochondrion | 34 | |
| 6259843217 | which anima cell organelle contains enzymes that transfer hydrogen from various substrates to oxygen : | Peroxisomes | 35 | |
| 6259855929 | thylakoids, DNA, and ribosomes are all components found in : | chloroplast | 36 | |
| 6259863081 | in a plant cell, DNA may be found in | the nucleus, mitochondria, and chloroplast | 37 | |
| 6259886025 | The chemical reactions involved in respiration are virtually identical between prokaryotic and eukaryotic cells. In eukaryotic cell, ATP is synthesized primarily on the inner membrane of the mitochondria. In light if the endosymbiont theory for the evolutionary origin of mitochondria, where is the most ATP synthesis like to occur in the prokaryotic cells : | on the plasma membrane | 38 | |
| 6259908410 | one of the key innovations in the evolution of eukaryotes from a prokaryotic ancestors is the endomembrane system. What eukaryotic organelles or features might have evolved as a part of the endomembrane system | nuclear envelope | 39 |
