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  • Activities. Tissues and organs
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      Activities. Tissues and organs
      The organisation of the human body
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      Activity 12

      0/1

      Which organelle would be more developed in a cell of the salivary glands?

      • Lysosomes, because they digest large molecules incorporated into the cell.

      • Correct answer
        Wrong answer

      • The Golgi apparatus, as it is in charge of secreting substances, in this case saliva, to the outside.

      • Correct answer
        Wrong answer

      • Ribosomes, as they participate in the synthesis of proteins.

      • Correct answer
        Wrong answer

        3 attempts
      Done
      Activities. Tissues and organs
      The organisation of the human body
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      Activity 13

      0/1
      Which cell has more mitochondria: a spermatozoid or an ovum?
      A
        spermatozoid

        3 attempts
      Done
      Activities. Tissues and organs
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      P

      Why?

        

        1 attempt
      Done
      Activities. Tissues and organs
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      Activity 14

      P

      Embryonic cells have the capacity to differentiate and reproduce indefinitely. In adult tissues certain cells keep these properties. They are mother cells. Investigate the importance of these particular cells for science and health and write a small report bellow.

        1 attempt
      Done
      Activities. Tissues and organs
      The organisation of the human body
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      Activity 15

      0/5

      Describe the shape of the cells represented in the image.

      • blood cells
      • Correct answer
        Wrong answer
      • muscle cells
      • Correct answer
        Wrong answer
      • nerve cells
      • Correct answer
        Wrong answer
      • ovum
      • Correct answer
        Wrong answer
      • embryo cell
      • Correct answer
        Wrong answer
      Cell differentiation
      Cell differentiation

        3 attempts
      Done
      Activities. Tissues and organs
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      Activity 16

      P

      Apart from salivary glands, do you know any other glands?

        1 attempt
      Done
      Activities. Tissues and organs
      The organisation of the human body
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      Activty 17

      P

      Why do you think cells of epithelial tissues are close together, with almost no intercellular substance between them?

        1 attempt
      Done
      Activities. Tissues and organs
      The organisation of the human body
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      Activity 18

      P

      Mucosa tends to be moist and thin. On the other hand, the epidermis is thicker and covered by a layer of dead cells. Explain why they are different.

        1 attempt
      Done
      Activities. Tissues and organs
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      Activity 19

      P

      Blood is a connective tissue. Explain why below:

        1 attempt
      Done
      Activities. Tissues and organs
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      0/1

       What type of tissue is it? 

        connective tissue

        3 attempts
      Done
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      Activity 20

      P

      What is the function of the cartilaginous tissue in the larynx and trachea?

        1 attempt
      Done
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      Activity 21

      0/4

      Can you think of any other functions that adipose tissue performs, apart from being an energy reserve? Choose the correct answers.

      • It also has a protective function. It acts as a cushiony and supportive layer that surrounds some of the major organs in organisms.

      • Correct answer
        Wrong answer

      • It also transports nutrients.

      • Correct answer
        Wrong answer

      • It also binds bones together and attaches muscle to bone.

      • Correct answer
        Wrong answer

      • It also fills space within the body.

      • Correct answer
        Wrong answer

      • It also shapes the body.

      • Correct answer
        Wrong answer

      • It also helps provide movement.

      • Correct answer
        Wrong answer

      • It also acts as an insulating layer, helping reduce heat loss through the skin.

      • Correct answer
        Wrong answer

        3 attempts
      Done
      Activities. Tissues and organs
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      Activity 22

      0/4

       Listen to the following statements and say true or false. Correct the false sentences.

      • a)
      • Correct answer
        Wrong answer
      • b)
      • Correct answer
        Wrong answer
      • c)
      • Correct answer
        Wrong answer
      • d)
      • Correct answer
        Wrong answer

        3 attempts
      Done
      Activities. Tissues and organs
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      Activity 23

      0/2

      Why do you think nerve cells have numerous branch like extensions? Choose the correct answers.

      • Because nerve cells transmit nerve impulses from one to another.

      • Correct answer
        Wrong answer

      • Because they are completing the process of cellular division.

      • Correct answer
        Wrong answer

      • Because the existence of these extensions allows the connection of each neuron with many others, therefore increasing the possibility of networking as well as increasing the complexity of coordination.

      • Correct answer
        Wrong answer

        3 attempts
      Done
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      Activity 24

      0/3

      Identify an organ that has:

      • a) nervous tissue

      • b) connective tissue

      • c) muscle tissue

      • heart

      • skin

      • brain

      Done
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