Expert NCERT for PMTs Top 10 question for PMTs [ Cell- The Unit Of Life ] 1. Zonula adherens is a kind of (a) filament (b) desmosome (c) membrane (d) mesosome 2. Which of the given statements are correct ? (a) Bacillus subtilis is a Gram (+) bacteria. (b) Escherichia coli is a Gram (-) bacteria. (c) Washing of the Grams stain in Gram (-) bacteria is due to high lipid content of the cell wall, which gets dissolved in organic solvents like acetone. 3. The fluidity of membranes in a plant in cold weather may be maintained by (a) increasing the number of phospholipids with unsaturated hydrocarbon tails (b) increasing the proportion of integral proteins (c) increasing the number of cholestrol in membrane (d) increasing the number of phospholipids with saturated hydrocarbon tail. 4. Enzyme peptidyl transferase occure in (a) larger subunit of ribosome (b) smaller subunit of ribosome (c) endoplasmic reticulum (d) lysosomes. 5. Glycocalyx is (a) glycoprotiens and glycolipids (b) oligosaccharide part of glycolipis and glycoprotiens (c) lipid and protien part of glycolipids and glycoprotiens (d) mucopolysaccharides attached to cell wall. 6. Pollutants and carcinogens are detoxified by (a) P450 and P448 (b) SER in liver (c) RER in liver (d) both (a) and (b). 7. True or False (a) Satellites are secondary constriction at a constant location on a few chromosome, that stain with basic dyes. (b) Mitochondria are power houses of the cell and are sites of both aerobic and anaerobic respiration. (c) The SER is the major site for synthesis of lipids and is continous with the outer membrane of the nucleus, as well as the plasma membrane. 8. (A) Some bacteria develop resistance to certain antibiotics. (R) The unique feature is due to their blueprint which is the genomic DNA. 9. (A) The material of the nucleus can be stained by acidic dyes. (R) This is due to the basic nature of the nuclear matiral. 10. (A) A single human cell has nearly 2 metre long DNA distributed amongst the 23 pairs of chromosomes. (R) Chromatin contains DNA and some basic protiens called histones only. if you want to see the ans. sheet then like this page and click on this url https://m.facebook/profile.php?id=704572776308350 Do your best plz like this page for Ncert question #ExpertNcertForPmts
Posted on: Sun, 21 Dec 2014 15:05:14 +0000
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