the fundamental unit of life
Quiz by Krithika Subramanian
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12 questions
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- Q11.A cell will swell up ifThe concentration of water molecules in the surrounding medium is higher than the concentration of water molecules in the cellThe concentration of water molecules does not matterThe concentration of water molecules in the cell is higher than the concentration of water molecules in the surrounding medium.The concentration of water molecules is same in the cell and in the surrounding medium30s
- Q22.Which of the following statements marks as a difference between plant cell and animal cell?Plant cells have cell wall which animal cells do not.Plant cells have more plastids while animal cells have few plastids.Plant cells do not have vacuole while animal cells do havePlant cells have only cell membrane while animal cells have both cell wall as well as cell membrane.30s
- Q33.Osmosis is a process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one. Can you pick out the option among the following which does not belong to this process?Plasma membranes contain chitin sugar in plants.The movement of water across a semipermeable membrane is affected by the amount of substances dissolved in it.Molecules soluble in organic solvents can easily pass through the membrane.Membranes are made of organic molecules such as proteins and lipids.30s
- Q44. The nucleus controls all the activities of the cell and acts as a site of DNA material and protein synthesis. It is composed of some components which all together give the nucleus its functionality. Here is shown a figure of nucleus with some of its components labeled as A, B, C and D. can you name these components correctly?a. A – Nucleons; B – Chromatin; C – Nuclear membrane; D – Nucleoplasmd. A – Nucleolus; B – Chromatin; C – Nuclear membrane; D – Nuclear wallb. A – Nucleus; B – Chromatin; C – Nuclear membrane; D – Nucleoplasmc. A – Nucleolus; B – Chromatin; C – Nuclear membrane; D – Nucleoplasm30s
- Q55.The process of plasmolysis in plant cell is defined as:None of theseBreakdown of plasma membrane in hypotonic solutionShrinkage of cytoplasm in hypertonic medium.Shrinkage of Nucleoplasm30s
- Q66. Cell is the structural and functional unit of life. The word cell is derived from the Latin word 'cellula' which means "a little room". Can you name the scientist who coined the term cell?Anton Von LeeuwenhoekRobert HookeRobert BrownErnst Haeckel30s
- Q77. In a test a teacher collected the answers given by four students as the definitions of osmosis as given below. Read carefully and select which is the correct definition.Movement of solvent molecules from its higher concentration to lower concentrationMovement of solute molecules from lower concentration to higher concentration of solution through a semipermeable membrane.Movement of water molecules from a region of higher concentration to a region of lower concentration through a semipermeable membrane.Movement of solvent molecules from higher concentration to lower of solution through a permeable membrane.30s
- Q88. Cell arises from pre-existing cell was stated byHookeHaeckelSchleidenVirchow30s
- Q99. Chromosomes are made up ofDNA and proteinRNAproteinDNA30s
- Q1010. Living cells were discovered byRobert BrownLeeuwenhoekRobert HookePurkinje30s
- Q1111. Membrane-bound flattened sacs (vesicles) arranged parallelly in a cell are…LYSOSOMESSERRERGolgi body30s
- Q12Centrioles are found inside ofChloroplastCentrosomesMitochondria30s
