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1、生物专业细胞生物学课程试题（5）一、选择填空（每小题2分，共60分，请做在答题卡上）1The first man that described the cell structures is A. Robert Hook. B. van Leeuwenhoek. C. W. Flemming. D. J. E. Pukinye. 2Phase contrast microscope can be used to observe A. Alive cell.B. Stained cell.C. Not stained cell.D. All of the above.3If you wanted
2、to separate eukaryote ribosomal subparticles by size, which of the following techniques would you use? A. Gel electrophoresis.B. Radiolabelling.C. Polymerase chain reaction.D. Density gradient centrifugation.4Which of the following description about prion in not true? A. Prion is a sort of protein t
3、hat causing some severe diseases, such as bovine sponge-form encephalopathies (BSM, mad cow disease). B. Prion can replicate itself by change the conformation of the proteins which are similar to prion. C. Prion is a transcription regulatory protein. D. Prion was discovered by Prusiner in 1982. 5In
4、general, glycoproteins and glycolipids: A. Are on the outer leaflet of the unit membrane, facing the environment of a cell. B. Are on the inner leaflet of the unit membrane, facing the cytosol. C. Are equally distributed on the inner and outer surface of the unit membrane. D. Occur only in internal
5、membranes. 6Which of the following is not the function of the bio-membrane? A. Signal transduction. B. Transportation. C. Transcription. D. Compartmentalization. 7In human intestine glucose are absorbed by the way of A. Na+ powered antiport. B. Na+ powered symport. C. Channel proteins. D. ABC transp
6、orter. 8The Na+/K+ ATPase of eukaryotic cells A. Is a P-type pump. B. Is a V- type pump. C. Is an F- type pump. D. Is an ATP-binding cassette. 9Following organelles are all surrounded by double bio-membranes except A. Mitochondrion B. Chloroplast. C. ER. D. Nucleus. 10Cis, medial and trans specify d
7、ifferent compartments of the.A. Golgi body. B. Endoplasmic reticulum. C. Mitochondrion. D. Nucleus. 11The PH value in lysosome is lower than that in cytoplasm because lysosome membrane exist A. P-type H+ pump. B. F-type H+ pump. C. V-type H+ pump. D. P-type Na+-K+ pump. 12Which of the following stat
8、ements about signal sequences is false? A. Signal sequences are removed from protein by signal peptidase after the sorting process has been completed (except nuclear localization sequence (NLS) and signal patch). B. Each signal sequence specifies a particular destination in the cell. C. NLS direct p
9、roteins into cytoplasm from nucleus. D. Any protein with a proper signal sequence will be transferred into the peroxisome. 13Which of the following about peroxisomes is true A. They are formed by binary fission of existing peroxisomes. B. They contain their own DNA. C. They contain oxidative enzymes
10、. D. Both A and C 14PSI absorb light of wavelength at A. 680nm.B. 700nmC. 280nmD. Both A and B15Which of the following is not encoded by the mtDNA? A. Cytochrome c. B. Cytochrome b. C. F0. D. Keratin. 16Cyclic photophosphorylation is accomplished by A. Photosystem I. B. Photosystem II. C. Photosyste
11、m III. D. Both photosystems I and II. 17G-protein linked receptors are A. Single-pass transmembrane proteins. B. Seven-pass transmembrane proteins. C. Three-pass transmembrane proteins. D. Not a transmembrane protein. 18Which of the following is NOT a second messenger? A. NO. B. cGMP. C. cAMP. D. IP
12、3. 19Dyneins are motor proteins that move from along A. end to +end; microtubules. B. +end to end; microtubules. C. end to +end; microfilaments. D. +end to end; microfilaments. 20Microtubules function in cells A. As structural supports, maintaining the shape of the cell. B. To form the spindle durin
13、g mitosis and meiosis. C. As a part of the system that causes movement in cilia and flagella. D. All of the above. 21Functions of tight junctions include all the following except A. Separation of extracellular fluid. B. Sealing of body cavities. C. Prevention of diffusion of membrane proteins and li
14、pids between apical and basolateral regions. D. Tight communication and extrange of small molecules between neighboring cells. 22Which of the following cytoskeleton structures links to desmosomes and hemidesmosomes? A. Microtubules. B. Intermediate filaments. C. Microfilaments. D. all of the above.
15、23Cell binding domain in fibronectins contain A. RGD sequences. B. KDEL sequences. C. Gly-XY sequences. D. PEST sequences. 24The core proteins in nucleosome are A. H2A, H2B, H3, H4. B. H1A, H1B, H3, H4. C. H1A, H2A, H3, H4. D. H1, H2, H3, H4. 25Eukaryotic chromosomes contain two general domains which relate to the degree of condensation. These two regions are A. Uniform in the genetic information they contain.
