| 21. | A : The contractile vacuole is full of water.
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| 22. | Ejectosomes apparently exert a contractile force, forming a tight septum around the bacteria.
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| 23. | In addition to sensory cells differentiated during development, adult Porifera display contractile activity.
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| 24. | Also their contractile capacity may help pull tissue together in the wound healing mechanism.
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| 25. | This leads to an accumulation of non-contractile material in the skeletal muscle.
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| 26. | All are elongated, flexible and highly contractile.
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| 27. | Immediately after the contractile vacuole ( CV ) expels water, its membrane crumples.
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| 28. | Other tests showed an improvement in cardiac cell contractile function by inhibiting G ??.
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| 29. | The two short and rather thick tentacles are contractile and concealed under the shield.
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| 30. | D : Contractile Vacuole gains water from cytoplasm.
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