Biology: Life on Earth
10th Edition
ISBN: 9780321729712
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: Benjamin Cummings
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Chapter 4, Problem 2FTB
Fill-in-the-Blank
The_______ is composed of a network or protein fibers. The three types of cytoskeleton fibers are ________,________, and__________. Which of these supports cilia?____________. Moves organelles?___________. Allows muscle contraction? __________ Provides a supporting framework for the cell?__________. LO2 LO3 LO5
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Which 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 filaments
Certain cells in your pancreas make digestive enzymes that are secreted into ducts and
carried to your small intestine. If you looked at these pancreatic cells with electron
microscopy, you would expect to see
numerous cilia on the cell surfaces.
multiple nuclei per cell.
large amounts of rough ER.
few ribosomes but numerous vacuoles.
large numbers of primary lysosomes.
Match the organelles on the figure with their functions.
site of cellular respiration
makes ribosomes
modifies, sorts and packages products
synthesizes lipids, stores calcium
found only in animal cells, anchors the spindle fibers during cell division
site of protein synthesis
membrane that encloses the genetic material
[Choose ]
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Chapter 4 Solutions
Biology: Life on Earth
Ch. 4 - The plasma membrane is composed of two major types...Ch. 4 - Fill-in-the-Blank The_______ is composed of a...Ch. 4 - Prob. 3FTBCh. 4 - 4. Antibody proteins are synthesized on ribosomes...Ch. 4 - After each description, fill in the appropriate...Ch. 4 - Two organelles that are believed to have evolved...Ch. 4 - 7. What structure in bacterial cells is composed...Ch. 4 - 1. What are the three principles of the cell...Ch. 4 - 2. Which cytoplasmic structures are common to both...Ch. 4 - Prob. 3RQ
Ch. 4 - Describe the nucleus and the function of each of...Ch. 4 - What are the functions of mitochondria and...Ch. 4 - What is the function of ribosomes? Where in the...Ch. 4 - Describe the structure and function of the...Ch. 4 - 8. How are lysosomes formed? What is their...Ch. 4 - 9. Diagram the structure of eukaryotic cilia and...Ch. 4 - List the structures of bacterial cells that have...Ch. 4 - Prob. 1ACCh. 4 - Prob. 2ACCh. 4 - What problems would an enormous round cell...
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- Assign a function(s) to the following cellular structures: a. plasma membrane b. mitochondrion c. nucleus d. ribosomearrow_forwardFill in the blanks: The three main components of a cell are the ___________, the ___________, andthe ___________.arrow_forwardThe nuclear pore is comprised of over 30 different types of proteins, each present in multiple copies. Some of the proteins make up fibrils that face the ____________. The mesh-like interior of the pore permits the unaided diffusion of _________ molecules across the pore. Group of answer choices Nucleus, large Cytosol, large Cytosol, small Nucleus, smallarrow_forward
- Asbestos is a material that was once used extensively in construction. One risk from working in a building that contains asbestos is the development of asbestosis caused by the inhalation of asbestos fibers. Cells will take up asbestos by phagoctytosis, but are not able to break it down. As a result, asbestos fibers accumulate in which organelle? Golgi apparatus nucleus peroxisomes lysosomesarrow_forwardMatch the type of cytoskeleton protein to the structure, protein, or role by writing the correct letter in the blank. Microtubules Microfilaments Intermediate filaments _________ Position organelles _________ Are not dynamic _________ Profilin _________ Form the contractile ring _________ Composed of tubulin _________ Stabilized by Tau proteins _________ Associate with myosin motors _________ Have dynamic instability _________ Pull sister chromatid apart during mitosis _________ Arp2/3 _________ Associated with kinesin and dynein motors _________ Formed by most abundant cellular protein _________ Treadmillingarrow_forward(Cytoskeleton) connect these terms: microfilaments, intermediate filaments, microtubules, cilia, flagella, 9+2, microvilliarrow_forward
- "Without the cytoskeleton, the cell will not be able to perform any of its functions." Is there truth behind this claim? explainarrow_forwardWhich of these organelles is directly involved in the synthesis, editing, or modification of cell components? Mark all that apply. Group of answer choices actin (8 nm) microfilaments cilia flagella free ribosomes Golgi complex (Golgi apparatus) intermediate (10 nm) filaments lysosomes microtubules (25 nm) peroxisomes proteasomes rough endoplasmic reticulum smooth endoplasmic reticulum spliceosomesarrow_forwardThe number and size of organelles in a cell correlates with that cell's function. When crying, the cells of the tear gland secrete proteins by exocytosis. Based on this information, which component of the cytoskeleton would be in abundance in these cells? [Select the best answer.] Microtubules Intermediate filaments Microfilamentsarrow_forward
- Compare and contrast the following terms: Cilia and flagellaarrow_forwardWhich of these organelles is directly involved in the storage and/or digestion (destruction) of cell components? Mark all that apply. Group of answer choices actin (8 nm) microfilaments cilia flagella free ribosomes Golgi complex (Golgi apparatus) intermediate (10 nm) filaments lysosomes microtubules (25 nm) peroxisomes proteasomes rough endoplasmic reticulum smooth endoplasmic reticulum spliceosomesarrow_forwardThe number and size of organelles in a cell correlates with that cell's function. When lactating, the cells of the mammary gland secrete milk sugar and proteins by exocytosis. Based on this information, which component of the cytoskeleton would be in abundance in these cells? Select the best answer. Microtubules Intermediate filaments O Microfilamentsarrow_forward
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