Classic Classic Quiz Biology by Eilis Eilis 36 played - 10 yrs ago Mrs westwood biology QUIZ 20 QUESTIONS hard Biology 1 Microscopes ability to distinguish between points that are close together is the... ResolutionMagnification 2 What part of the cell is this? MicrovilliEndoplasmic reticulumGologi apparatus 3 How do you work out the magnification? Actual divided by apparentApparent divided by actualActual times apparent 4 The role of the microvilli is to _____. Enlarge surface area for absorptionEnable protein synthesisGrap proteins 5 What part of the cell is this? MitochondriaLysosomesNucleus 6 The role of the nuclear pores is to ____. Allow cell to breathControl entry and exit of materialsAllow passage of large molecules 7 Which are two characteristics of a prokaryotic cell? No nuclei and DNA is circularDNA is linear and no histonesNo nuclei and complexed with histones 8 What is as characteristic of a nuclear envelope? Single membraneDouble membraneJelly like 9 What part of the cell forms lysosomes? Golgi apparatusRough endoplasmic reticulumMitochondrion 10 What is complete autolysis? Production of proteinRespirationSelf destruction of the cell 11 What is Fick's Law? Surface area time difference in concentration divided by thickness in exchange surfaceThickness of exchange surface time surface area divided in difference of concentrationDifference of concentration times Thickness of exchange surface divided by surface area 12 Pure water has a the water potential of : 10. 50 13 True or false : The more negative the water potential the more water it can absorb. TrueFalse 14 What time of movement requires energy? DiffusionActive transportOsmosis 15 What is homogenation? Solution containing a chemical which maintains the correct pHBreak up cells so organelles are freedEqual concentration so organelles arent affected by osmosis 16 Which is faster? Carrier proteinsChannel proteins 17 What colour will iodine go in the presence of starch? Blue/blackClearOrange 18 In an emulsion test for lipids, what colour should it go? RedCloudyColourless 19 What is the material at the bottom of the test tube after centrifugation called? PelletSupernatantResidue 20 What do carrier proteins have to do transfer a solute across? Undergo conformational changes- change shapeBind with sodium ionsOpen pores A mistake in this Quiz ? Contact the author Commentaires
