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Cells And Tissues Test - 8

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Cells And Tissues Test - 8
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Refer to the figures given below:



    Choose the correct statement from the following:
    Solution
    The cell in beaker B will neither burst nor shrink as it is in equilibrium (the amount of solution entering and exiting the cell is the same).
  • Question 2
    1 / -0
    Which of the given options represents the correct labelling of the diagram shown below?

    Solution
    (1) Plasma membrane, (2) Cytoplasm, (3) Golgi apparatus, (4) Nucleus, (5) Nucleolus, (6) Endoplasmic reticulum, (7) Mitochondria
  • Question 3
    1 / -0
    The function(s) of rough endoplasmic reticulum is/are
    Solution
    Rough endoplasmic reticulum has ribosomes attached to its surface. These ribosomes are responsible for synthesis of proteins. Hence, the main function of RER is protein synthesis.
  • Question 4
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    Which among the following is not a function of endoplasmic reticulum?
    Solution
    Lysosomes are manufactured and budded into the cytoplasm by the Golgi apparatus.
  • Question 5
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    Why do Golgi bodies have connections with the membranes of ER?
    Solution
    Golgi bodies are attached to the membranes of the ER. The materials synthesised by the ER are transported to the Golgi bodies, where these are modified and then dispatched. The material may be stored in the Golgi bodies if required.
  • Question 6
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    Which of the following organelles have their own DNA and ribosomes?
    Solution
    Mitochondria and plastids have their own DNA and ribosomes. These are, therefore, called semi autonomous organelles.
  • Question 7
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    Which of the following is a correct match of type of cell and cell structure present in it?
    Solution
    Centrosomes are cell organelles that are exclusive to animal cells and perform a key role in cell division. Plastids and cell wall are exclusive to plant cells. The correct answer is option 2.
  • Question 8
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    Which of the following is a correct pair of organelle and its function?
    Solution
    Mitochondria are known as the powerhouses of the cell. The energy required for various chemical activities needed for life is released by mitochondria in the form of ATP (Adenosine triphopshate) molecules.
  • Question 9
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    Directions For Questions

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    Directions: Refer to the organisms A and B. Choose the correct statement from the following.
    Solution
    A is paramecium and B is amoeba. As both are unicellular animals, they do not possess cell wall.
  • Question 10
    1 / -0

    Directions For Questions

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    Directions: Refer to the given flow chart and choose the incorrect statement.
    Solution
    A is a unicellular and irregularly shaped organism. So, it is amoeba. In amoeba, locomotion takes place by pseudopodia. Amoeba is associated with amoebic dysentery.As B is an irregularly shaped unicellular cell, it is WBC. WBCs do not contain haemoglobin and help body fight with pathogens.
  • Question 11
    1 / -0

    Directions For Questions

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    Directions: Refer to the different types of human cells given and choose the incorrect statement.
    Solution
    Type A cells are red blood cells. They play no role in blood clotting. RBCs bind to the oxygen and transport it throughout the body.
    Type B cells are muscle cells and they are associated with movement and locomotion.
    Type C cells are nerve cells. They receive and transfer messages, thereby helping control and coordinate the working of different parts of the body.
  • Question 12
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    Directions For Questions

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    In the above flow chart, box A possesses structures common to plant and animal cells and box B possesses structures common to prokaryotic and eukaryotic cells. Which of the following pairs of structures are grouped erroneously?
    Solution
    Centrioles and cilia are grouped erroneously. Centrioles are found only in animal cells and cilia are found only in eukaryotes.
  • Question 13
    1 / -0

    Directions For Questions

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    Directions: Refer to the given flow chart and choose the incorrect statement.
    Solution
    A is chlorophyll. Chlorophyll is important for photosynthesis and is found only in autotrophs, which use sunlight for making food.
    B indicates green coloured plastids i.e. chloroplasts. Chloroplasts are green in colour due to presence of a pigment called chlorophyll.
    C indicates water filled structures, thus they are vacuoles. Vacuoles are bigger in plant cells than in animal cells.
  • Question 14
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    The shape and size of a cell is related to its
    Solution
    The shape and size of a cell depends on the functions that it performs.
  • Question 15
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    Which of the following statements is/are true?

    i. Robert Hooke first observed dead cells, whereas Leeuwenhoek first reported free living cells.
    ii. Cell theory was proposed by Virchow.
    iii. Purkinje coined the term 'protoplasm'.
    Solution
    Robert Hooke first observed dead cells, whereas Leeuwenhoek first reported free living cells. Purkinje coined the term 'protoplasm'.
    The first cell theory is credited to the work of Theodor Schwann and Matthias Jakob Schleiden in 1830s.
  • Question 16
    1 / -0
    Cell wall of a plant is composed of
    Solution
    A plant cell wall is composed of a polysaccharide known as cellulose. Cellulose is the most abundant organic polymer on Earth.
  • Question 17
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    The rod-shaped structures in nucleus, which are visible at the time of cell division, are known as
    Solution
    The rod-shaped structures in nucleus, which are visible at the time of cell division, are known as chromosomes.
  • Question 18
    1 / -0
    Which of the following statements is not true for nucleus?
    Solution
    Nucleolus is that part of a nucleus which is responsible for the complete functioning of the nucleus and thus, it is equivalent to the nucleus of a cell, and not the cytoplasm.
  • Question 19
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    Which is the largest cell?
    Solution
    The largest cell measuring 170 mm × 130 mm is the egg of an ostrich.
  • Question 20
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    The white material of an egg that solidifies on boiling is made up of
    Solution
    In an egg, a white material surrounds the yellow part. The white material is protein, known as albumin, which solidifies on boiling.
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