C They have great tnsile strength (resist D. They attach to desmosomes actin fil

Question

C They have great tnsile strength (resist D. They attach to desmosomes actin filaments can shrink while others simultaneously grow in the same cell actin subunmits cleave ATP to form GDP and inorganic phosphate, 2. which obarvation? is balanced onditions, the number of actin subunits added to the plus end of a filamene flamentdc subunits attach to the plus end of a A. Some switch from growing to shrinking C. Under of subunits from the minus end by D. Fluorescently 1. 3. Which of the following attributes of microtubules A. They have structural polarity (Directional). B. They bind nucleotide triphosphates (ATP or GTP) C. They are involved with movement. D. All of these attributes describe intermediate filaments. E. None of these attributes describe intermediate filaments. 4. Which statement about tubulin is correet? A. Tubulin proteins bind to ATP that promote polymerization B. Tubulin proteins bind to GTP that promote polymerization. C. Tubulin proteins bind to ATP that discourage polymerization. D. Tubulin proteins bind to GTP that discourage polymerization 5. Although the lengths of all phases of the cell cycle are variable to some extent, by far the greatest variation occurs in the duration of Gi A. True B. False

Explanation / Answer

Answer for question number 1 : The incorrect option is A (they are involved in cellular movement). The most important function of intermediate filaments is mechanical support to the cells and also to maintain cell shape and to fix organelle locations within the cytoplasm. They are four types of intermediate filaments such as Type I to type IV.

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