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| CSIR & GATE Question papers |
| CSIR and GATE exams are considered as gate way to do Phd in India in various field ranging from biology to engineering ,even foreign university expecting students applying from India to be csir cleared. This site holds many tips and tricks as well as previous year question paper and model question papers to work out.check it out if you are interested |
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| Solved CSIR Life sciece cell biology questions Part 1 |
| 2011-11-29 12:48:42 |
51. During anaphase II(a) homologues separate and migrate towards opposite poles.(b) sister chromatids separate and migrate towards opposite poles.(c) nuclei reform.(d) chromosomes line up in a single file.52. During anaphase I(a) homologues separate and migrate towards opposite poles.(b) sister chromatids separate and migrate towards opposite poles.(c) nuclei reform.(d) chromosomes line up in a single file.53. Cytokinesis is the(a) exchange of homologous regions of nonsister chromatids.(b) formation of tetrads.(c) independent assortment of chromosomes.(d) division of one cell into two54. Centrioles separate during(a) cytokinesis.(b) prophase I and prophase II(c) metaphase I and metaphase II.(d) anaphase I and anaphase II.55. Crossing over occurs during(a) cytokinesis. (b) metaphase I.(c) ...
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| Solved CSIR Life sciece cell biology questions Part 2 |
| 2011-11-29 12:47:32 |
61. An antigen is(a) a protein molecule that helps defend the body against disease.(b) a type of white blood cell.(c) an invading virus or bacterium.(d) a foreign molecule that evokes a specific response by a lymphocyte.62. How do memory cells differ from effector cells?(a) Memory cells are more numerous.(b) Memory cells are responsible for the primary immune response.(c) Memory cells attack invaders; effector cells do not.(d) Memory cells live longer.63. Following tissue damage or the entry of microorganisms, an inflammatory responsemay be initiated by(a) the accumulation of phagocytes in an injured area.(b) the release of interferon by infected cells.(c) an increased blood flow in an infected or injured area.(d) the release of chemicals such as histamine by damaged cells.64. Which of the...
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| Solved CSIR Life sciece cell biology questions Part 3 |
| 2011-11-29 12:46:06 |
71. The body produces antibodies complementary to foreign antigens. The process bywhich the body comes up with the correct antibodies to a given disease is most like(a) going to a tailor and having a suit made to fit you.(b) ordering the lunch special at a restaurant without looking at the menu.(c) going to a shoe store and trying on shoes until you find a pair that fits.(d) selecting a lottery prize-winner by means of a random drawing.72. The antigen-binding sites of an antibody molecule are formed from the molecule’svariable regions. Why are these regions called variable?(a) They can change their shapes on command to fit different antigens.(b) They change their shapes when they bind to an antigen.(c) They can be different shapes on different antibody molecules.(d) Their sizes vary cons...
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| Solved CSIR Life sciece cell biology questions Part 4 |
| 2011-11-29 12:44:36 |
81. Procollagen consists of _______ and is formed in the lumen of the:(a) 2 b sheets, lysosomes(b) 3 b sheets, E R(c) 3 a chains, Golgi(d) 3 a chains, E R82. The flexibility of the lungs is due mainly to:(a) laminins (c) elastins(b) collagens (d) fibronectins83. A difference between collagen and elastin is that:(a) elastin has hydroxylysines and collagen does not(b) collagen does not have hydroxylated proline residues(c) there are over 15 types of elastins and less than 5 types of collagens(d) elastin molecules are crosslinked by covalent bonds between lysine residues,and collagen is not84. Which is the correct order from least to most complex?(a) Glucuronate, hyaluronate, proteoglycans, GAG(b) Hyaluronate, glucuronate, GAG chains, proteoglycans(c) GAG chains, hyaluronate, glucuronate, pro...
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| Solved CSIR Life sciece cell biology questions Part 5 |
| 2011-11-29 12:43:04 |
91. The three most common cell junctions in animals are:(a) adhesive junctions, tight junctions, gap junctions(b) adhesive junctions, tight junctions, plasmodesmata(c) tight junctions, plasmodesmata, adhesive junctions(d) gap junctions, tight junctions, plasmodesmata92. The reason urine does not seep out of the bladder is due to the role of:(a) adherens junctions (b) hemidesmosomes(c) gap junctions (d) tight junctions93. Desmosomes and hemidesmosomes are anchored in the cytoplasm by:(a) desmocollins (c) actin fibers(b) collagen (d) tonofilaments94. Gap junctions consist of channels formed by:(a) hydrophilic, connexons (b) hydrophobic, cadherins(c) hydrophobic, connexons (d) hydrophilic, cadherins95. A plant cell wall includes all of the following EXCEPT:(a) hemicellulose (b) extensins(c) c...
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| Life Science CSIR NET JRF - Cell Biology questions - Part - 1 |
| 2011-11-27 10:38:23 |
1. Which of the following is not a function of mitotic cell division in(a) repair of damaged organs (b) production of gametes(c) asexual reproduction (d) growth2. Which of the following would not be considered part of a cell’s cytoplasm?(a) a ribosome (b) the nucleus(c) a mitochondrion (d) a microtubule3. It is difficult to observe individual chromosomes with a light microscope during interphase because:(a) they have uncoiled to form long, thin strands(b) they leave the nucleus and are dispersed to other parts of the cell(c) the DNA has not been replicated yet(d) the spindle must move them to the metaphase plate before they become4. The maximum size of a cell is limited by(a) its need for enough surface area for exchange with its environment.(b) the number of organelles that can be packe...
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| Life Science CSIR NET JRF - Cell Biology questions - Part - 2 |
| 2011-11-27 10:37:19 |
11. Cells will usually divide if they receive the proper signal at a(a) M (b) S(c) G2 (d) G112. Dye injected into a plant cell might be able to enter an adjacent cell through a(a) tight junction. (b) microtubule.(c) desmosome. (d) plasmodesma.13. A researcher made an interesting observation about a protein made by the rough ER and eventually used to build a cell’s plasma membrane. The protein in the membrane was actually slightly different from the protein made in the ER. The protein wasprobably changed in the(a) Golgi apparatus. (b) smooth ER.(c) mitochondrion. (d) nucleus.14. When elongated, tube-shaped cells from the lining of the intestine are treated with a certain chemical, the cells sag and become round blobs. The internal structures disrupted by this chemical are probably(a) cell...
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| Life Science CSIR NET JRF - Cell Biology questions - Part - 3 |
| 2011-11-27 10:36:16 |
21. Discontinuous segments of DNA are joined by:(a) telomerase (b) DNA ligase(c) exonuclease (d) DNA polymerase22. The concentration of calcium in a cell is 0.3%. The concentration of calcium in the surrounding fluid is 0.1%. How could the cell obtain more calcium?(a) passive transport (b) diffusion(c) active transport (d) osmosis23. Phospholipid molecules in a membrane are arranged with their ____ on the exterior and their ____ on the interior.(a) hydrophobic heads . . . hydrophilic tails(b) hydrophilic heads . . . hydrophobic tails(c) nonpolar heads . . . polar tails(d) hydrophobic tails . . . hydrophilic heads24. Sister chromatids:(a) are created when DNA is replicated(b) are separated during mitosis(c) are attached at the centromere prior to division(d) all of the above25. Which of the...
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| Life Science CSIR NET JRF - Cell Biology questions - Part - 4 |
| 2011-11-27 10:35:07 |
31. Imagine two solutions separated by a selectively permeable membrane which allows water to pass, but not sucrose or glucose. The membrane separates a 0.2 M sucrose solution from a 0.2 glucose solution. With time how will the solutions change?(a) Nothing happens because the two solutions are isotonic to one another.(b) Water enters the sucrose solution because the sucrose molecule is a disaccharide, and is larger than the monosaccharide glucose.(c) Water leaves the sucrose solution because the sucrose molecule is a disaccharide, and is larger than the monosaccharide glucose.(d) The sucrose solution is hypertonic and will gain water because the total mass of sucrose is greater than that of glucose.32. During cytokinesis in plants:(a) a bundle of actin microfilaments called the contractile...
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| Life Science CSIR NET JRF - Cell Biology questions - Part - 5 |
| 2011-11-27 10:33:07 |
41. A DNA molecule is a polymer made of subunits called(a) bases. (b) amino acids.(c) nucleotides. (d) nucleic acids.42. A human somatic cell contains _____ chromosomes.(a) 23 (b) 47(c) 2n (d) 4643. Which of the following is a normal human female?(a) X Y (b) X X Y(c) X X (d) X44. A karyotype would be least likely to show which of the following?(a) an extra chromosome(b) part of a chromosome duplicated(d) a missing chromosome(d) part of a chromosome turned around45. The diploid stage of a plant that exhibits an alternation of generation is the(a) antheridium. (b) gametophyte.(c) spore. (d) sporophyte.46. DNA replication occurs(a) whenever a cell makes protein.(b) to repair gene damage caused by mutation.(c) before a cell divides.(d) whenever a cell needs RNA.47. Mitosis and cytokinesis resu...
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