Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Why does rescue (the rate at which shrink microtubules switch to growth) lead to an increase in the number and length of microtubules? Why is this factor less influential than the growth rate?
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- Why does nucleation sites cause the number of microtubules to rise but the length to grow unstable?arrow_forwardA patient has ingested a chemical known to prevent alpha-tubulin from hydrolyzing GTP to GDP. Which of the following is the BEST conclusion? O The patient's dyneins and kinesins will not be able to hydrolyze nucleotides. O The patient's microtubules will only be able to grow. O The patient's microtubules should still be able to grow and shrink depending on the needs of the cell. O The patient's microtubules will only be able to shrink.arrow_forwardWhy does release (the rate of release of minus ends from the nucleation site of the centrosome, allowing the depolymerization of minus ends) cause the decrease of the number and length of microtubules?arrow_forward
- What are the functions of microtubules?arrow_forwardFor which of the following apply: the extracellular space is eliminated here near the surface between two cells. A) Zonula adherens B)Zonula occluded C) Desmosome D) Gap junction E) Hemidesmosomearrow_forwardIn the accelerated phase, cells begin to... A) Increases and the rate of division increases until it reaches a maximum B) Decreases and the rate of division increases until it reaches a maximum C) Increases and the rate of division increases until it reaches a minimumarrow_forward
- at would happen if an organism lost the ability to carry out cell division? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a) Cells can recover on its own if they are damaged. b) Damaged cells will not be replaced by new cell and organism may not function well. c) Organism will continue to function normally d) Adult organism does not depend on cell divisionarrow_forwardHow do microfilaments and microtubules differ?arrow_forwardBriefly mention about four types of growth.arrow_forward
- Describe what is happening on the bacterial cells growing on the stuffed chicken during the different phases of growth, under low temperature. Will a lag phase occur? Will the logarithmic phase occur at a faster rate? How about the stationary and death phase of the cells?arrow_forwardTrue or false, All microtubules that extend toward the center of the cell eventually attach chromosomes. If this is not true explain?arrow_forwardIf a cell that had two copies of each chromosome, but problems with the spindle caused the sister chromatids to remain attached to each other and to only one spindle pole, what cells would result? a) cells with 2 copies of each chromosome and 2 copies of each chromosome b) cells with 3 copies of each chromosome and 1 copy of each chromosome c) cells with 6 copies of each chromosome and 2 copies of each chromosome d) cells with 4 copies of each chromosome and 0 copies of each chromosome e) cells with 1 copy of each chromosome and 1 copy of each chromosomearrow_forward
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