BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Textbook Question
Chapter 4, Problem 5U
The cytoskeleton includes
a. microtubules made of actin filaments.
b. microfilaments made of tubulin.
c. intermediate filaments made of twisted fibers of vimentin and keratin.
d. smooth endoplasmic reticulum.
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The cytoskeleton includesa. microtubules made of actin filaments.b. microfilaments made of tubulin.c. intermediate filaments made of staggered protein tetramers.d. smooth endoplasmic reticulum.
Mark the following statements about the cytoskeleton as true or false. If a statement is false, correct it to make a true statement.a. _____ Actin filaments combine with myosin motor proteins to provide the cell with mechanical strength.b. _____ The cilia found on sperm cells propel the cells through a liquid medium.c. _____ Microtubules are hollow tubes that align organelles and shuttle them to their proper places in the cell.d. _____ Intermediate filaments are ropelike structures composed of tubulin proteins.e. _____ Centrioles are part of the centrosome from which microtubules originate.f. _____ Endocytosis, exocytosis, muscle cell contraction, and cellular “crawling” are all mediated by intermediate filaments
Which of the following is NOT a function of lysosomes?
a.
digesting particles taken in by endocytosis
b.
help in the formation of cell membranes
c.
degrading worn-out or nonfunctional organelles
d.
breaking down bone to release calcium ions into the blood
Chapter 4 Solutions
BIOLOGY
Ch. 4.1 - Discuss the cell theory.Ch. 4.1 - Describe the factors that limit cell size.Ch. 4.1 - Prob. 3LOCh. 4.2 - Describe the organization of prokaryotic cells.Ch. 4.2 - Prob. 2LOCh. 4.3 - Prob. 1LOCh. 4.3 - Prob. 2LOCh. 4.3 - Prob. 3LOCh. 4.4 - Prob. 1LOCh. 4.4 - Contrast the different functions of internal...
Ch. 4.4 - Prob. 3LOCh. 4.5 - Describe the structure of mitochondria and...Ch. 4.5 - Compare the function of mitochondria and...Ch. 4.5 - Prob. 3LOCh. 4.6 - Contrast the structure and function of different...Ch. 4.6 - Prob. 2LOCh. 4.7 - Prob. 1LOCh. 4.7 - Prob. 2LOCh. 4.7 - Prob. 3LOCh. 4.8 - Prob. 1LOCh. 4.8 - Prob. 2LOCh. 4 - Prob. 1IQCh. 4 - Prob. 2IQCh. 4 - Prob. 3IQCh. 4 - Which of the following statements is NOT part of...Ch. 4 - All cells have all of the following except a....Ch. 4 - Eukaryotic cells are more complex than prokaryotic...Ch. 4 - Which of the following are differences between...Ch. 4 - The cytoskeleton includes a. microtubules made of...Ch. 4 - The smooth endoplasmic reticulum is a. involved in...Ch. 4 - Plasmodesmata in plants and gap junctions in...Ch. 4 - The most important factor that limits the size of...Ch. 4 - All eukaryotic cells possess each of the following...Ch. 4 - Adherens junctions, which contain cadherin, are...Ch. 4 - Different motor proteins like kinesin and myosin...Ch. 4 - The protein sorting pathway involves the following...Ch. 4 - Chloroplasts and mitochondria have many common...Ch. 4 - Prob. 7ACh. 4 - The smooth endoplasmic reticulum is the site of...Ch. 4 - Use the information provided in table 4.3 to...Ch. 4 - Prob. 3SCh. 4 - The protist Giardia intestinalis is the organism...
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- Explain how the form of each of the following structures is related to its function: a. Cilia b. Microvilli c. Intermediate filaments d. Lysosomes e. Nuclear envelopearrow_forwardThe cytoskeleton of a cell consists of all of the following, excepta. microtubules.b. actin fi laments.c. extracellular matrix.d. intermediate fi laments.arrow_forwardCreate a table the organelles, the cytoplasm, their location and their function a. mitochondria b. ribosome c. golgi bodies d. lysosomes e. Nucleus f. cytoplasmarrow_forward
- What is the major function of lysosomes? They: A. package proteins B. detoxify toxic substances C. catalyse lipid metabolism D. digest unwanted particles within the cellarrow_forwardCreate a table with the following: the organelles, the cytoplasm, their location and their function a. mitochondria b. ribosome c. golgi bodies d. lysosomes e. Nucleus f. cytoplasmarrow_forwardThe organelle that combines proteins with carbohydrates and packages them within vesicles for secretion is A.the Golgi complex. B.the rough endoplasmic reticulum. C.the smooth endoplasmic reticulum. D.the ribosome.arrow_forward
- List the three types of filaments associated with the cytoskeleton. Identify the structures in cells that are composed of microtubules.arrow_forwardThis component of the cytoskeleton is located just under the plasmamembrane of a eukaryotic cell.a. actin filamentsb. microtubulesc. centrosomesd. intermediate filamentsarrow_forwardSome genetic diseases cause deficient activity of lysosomes. What would be the direct consequence of these diseases? a.Fewer macromolecules within the cytosol. b.Less degradation of old organelles. c.Increased hydrolysis of macromolecules. d.Reduce rate of endocytosis.arrow_forward
- Which of the following is a component of the cytoskeleton? a. collagen b. dynein c. elastin d. chromatinarrow_forwardGive the respective structural descriptions and functions of the following: 1. Cell Membrane 2. Nucleus 3. Nucleolus 4. Smooth Endoplasmic Reticulum 5. Rough Endoplasmic Reticulum 6. Nuclear Membrane 7. Mitochondria 8. Golgi Apparatus 9. Cytoskeletonarrow_forwardMatch each following organelle with its function: Select the INCORRECT match. a. Cytoskeleton/ Network of microtubulesand microfilaments b. RER/ Has sites for protein synthesis c. Nucleus/ Site of ribosome synthesis d. SER/ Contains enzymes for lipid synthesisarrow_forward
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