Modified Mastering Biology With Pearson Etext -- Standalone Access Card -- For Biological Science (7th Edition)
7th Edition
ISBN: 9780135276556
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Greg Podgorski, Emily Taylor, Jeff Carmichael
Publisher: PEARSON
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Chapter 7, Problem 12PIAT
MODEL The distribution of melanosomes in cells is tightly regulated in animals that rapidly change color. Dark-colored cells have melanosomes scattered throughout the cytoplasm while light-colored cells have them aggregated near the nucleus. Draw a model of a cell representing each state, and predict how cells could use microtubules and motor proteins to change the distribution of melanosomes.
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Which is NOT a general function of the cellular cytoskeleton?
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Chapter 7 Solutions
Modified Mastering Biology With Pearson Etext -- Standalone Access Card -- For Biological Science (7th Edition)
Ch. 7 - What are three attributes of mitochondria and...Ch. 7 - PROCESS OF SCIENCE Which of the following results...Ch. 7 - Molecular zip codes direct molecules to particular...Ch. 7 - How does the hydrolysis of ATP result in the...Ch. 7 - Prob. 5TYUCh. 7 - 7. Most of the proteins that enter the nucleus...Ch. 7 - Prob. 11PIATCh. 7 - 12. MODEL The distribution of melanosomes in cells...Ch. 7 - Prob. 15PIATCh. 7 - Prob. 16PIAT
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- Many eukaryotic organelles are involved in the production and shipping of proteins out of the cell. Explain the pathway that a protein takes from its initial instructions through to its exportation from the cell. Include ALL organelles involved and explain their function.arrow_forwardDescribe receptor-mediated endocytosis. and draw a diagram on the mammalian eyearrow_forwardMyocardium (cardiac muscle tissue) must rhythmically contract for a lifetime. This requires aconsiderable amount of energy production by the cells. You would expect to see a relatively high amount of which organelle in these cells? A - smooth endoplasmic reticulum B - mitochondria C - cytoskeleton D - lysosomesarrow_forward
- Shock (failure of the circulatory system) is an abnormal condition in which blood flow is inadequate. The most common causes of shock are massive blood loss and obstruction of blood flow. As a result of shock, there is a failure to provide cells with oxygen and nutrients. In this circumstance, cells swell and lysosomal membranes rupture, among other effects. Describe how energy is generated during shock and why cell structure becomes destabilized.arrow_forwardList the three types of filaments associated with the cytoskeleton. Identify the structures in cells that are composed of microtubules.arrow_forwardhttps://www.youtube.com/watch?v=FzcTgrxMzZk facilitate a discussion on the differences between eukaryotic and prokaryotic cells. Address the diversity in structure and function of the various organelles. Additionally, predict and discuss what would be the impact on a cell if specific organelles were dysfunctional in that cell.arrow_forward
- Explain the structure of dynein and kinesin and how their structures aid in organelle movement within a eukaryotic cell. Explain the structure of a muscle fiber and how the two proteins, actin and myosin, function together to produce movement.arrow_forwardDraw and label a cell lipid bilayer and diagram how the following transport processes take place: passive diffusion of oxygen into the cell, facilitated diffusion of potassium into the cell, active transport of sucrose into the cell. Using different symbols (circles for oxygen, squares for sucrose, and triangles for potassium ions), show the relative concentrations (gradients) of these substances on the inside and outside of the cell. For example, to show that oxygen enters the cell by going “down” its gradient, you would draw more circles on the outside of the cell than inside the cell. Be sure to show and label membrane proteins when appropriate, and show the electric membrane potential using “+”s (pluses) on one side and “-”s (minuses) on the other side of the membrane. Also show the proton pump which uses ATP as a source of energy.arrow_forwardDescribe the function of each organelle in Figurearrow_forward
- Which organelle makes proteins? What are some of the functions of proteins? Explain how the cell's ability to maintain homeostasis may be affected without this damaged cell organelle.arrow_forwardWhich characteristics correctly describe the cytoskeleton? provides structure for the cell structure cannot be changed composed of only one type of filament assists in the movement of organelles made of nucleic acid filamentsarrow_forwardNeurons have long thin processes called axons, structuresspecialized for conducting signals throughout the organism’s nervous system. Some axonal processes can be as long as 2 m—for example, the axons that originate in your spinal cord and terminate in the muscles of your toes. Small membrane-enclosed vesicles carrying materials essential to axonal function move along microtubules of the cytoskeleton, from the cell body to the tips of the axons. If the average velocity of a vesicle is 1 μm/s, how long does it take a vesicle to move from a cell body in the spinal cord to the axonal tip in the toes?arrow_forward
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