Information about the cytoskeleton in cells
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What is the cytoskeleton made of? | Many protein filaments.
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| What do microtubules do? | Organize the inside of the cell and form a dynamic framework that moves the structures to specific locations.
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| How does the poison from the crocus plant affect animals? | When an animal eats this plant, their cells can't divide and they die, because the poison blocks microtubule assembly.
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| How does the drug taxol kill cancer cells? | It can stop the uncontrolled cell divisions that cause some cancers.
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| What is the main role of the microfilaments? | To form flexible, linear bundles and networks that reinforce and restructure the cell surface.
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| _______ filaments are the most stable parts of some cytoskeletons and they also help to maintain cell ________. | Intermediate, Structures.
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| If in an analogy, the microtubules and microfilaments where the train tracks in a busy city, what would the train engines be? | Kinesins, dyneins, myosins and other motor proteins.
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| Some motor proteins, such as _kinesins_ in plants, move _chloroplasts_ from one position to another to take advantage of sunlight striking the leaf. True/False? | True.
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| What kind of motor proteins are responsible for aiding in muscle contraction in animal cells? | Myosins.
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| What do the flagella and cilia look like (both are motile structures that project from the cell surface)? | The fragella is longer and not as profuse as cilia.
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| What type of structure do sperm use to "swim" and what do they look like? | Cilia structure. They are a short structure.
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| Which type of motile structure do you have in the airways to your lungs and what is their job? | Cilia. Their job is to sweep out airborne bacteria and particles that might reach the lungs.
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