Campbell Biology (11th Edition)
11th Edition
ISBN: 9780134093413
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Chapter 6.7, Problem 3CC
MAKE CONNECTIONS Ø The polypeptide chain that makes up a tight junction weaves back and forth through the membrane four times, with two extracellular loops, and one loop plus short C-terminal and N-terminal tails in the cytoplasm. Looking at Figure 5.14, what would you predict about the amino acid sequence of the tight junction protein?
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MAKE CONNECTIONSPDGF signals cells by binding toa cell-surface receptor tyrosinekinase. If you added a chemicalthat blocked phosphorylation,how would the results differ?(See Figure 11.8.)
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Q6: A protein that spans the phospholipid bilayer one or more times isO a glycoprotein.O a transmembrane protein.O an extracellular matrix protein.O a peripheral protein.
Chapter 6 Solutions
Campbell Biology (11th Edition)
Ch. 6.1 - Prob. 1CCCh. 6.1 - Prob. 2CCCh. 6.2 - Briefly describe the structure and function of the...Ch. 6.2 - DRAW IT Draw a simplified elongated cell that...Ch. 6.3 - What role do ribosomes play in carrying out...Ch. 6.3 - Describe the molecular composition of nucleoli and...Ch. 6.3 - Prob. 3CCCh. 6.4 - Describe the structural and functional...Ch. 6.4 - Describe how transport vesicles integrate the...Ch. 6.4 - WHAT IF? Imagine a protein that functions in the...
Ch. 6.5 - Describe two characteristics shared by...Ch. 6.5 - Prob. 2CCCh. 6.5 - Prob. 3CCCh. 6.6 - Prob. 1CCCh. 6.6 - WHAT IF? Males afflicted with Kartagener's...Ch. 6.7 - In what way are the cells of plants and animals...Ch. 6.7 - Prob. 2CCCh. 6.7 - MAKE CONNECTIONS The polypeptide chain that makes...Ch. 6.8 - Prob. 1CCCh. 6 - Prob. 6.1CRCh. 6 - Explain how the compartmental organization of a...Ch. 6 - Describe the relationship between the nucleus and...Ch. 6 - Describe the key role played by transport vesicles...Ch. 6 - What does the endosymbiont theory propose us the...Ch. 6 - Describe the role of motor proteins inside the...Ch. 6 - Prob. 6.7CRCh. 6 - When a cell ingests a bacterium, what role does...Ch. 6 - Which structure is not part of the endomembrane...Ch. 6 - Prob. 2TYUCh. 6 - Which of the following is present in a prokaryotic...Ch. 6 - Prob. 4TYUCh. 6 - Which cell would be best for studying lysosomes?...Ch. 6 - Prob. 6TYUCh. 6 - EVOLUTION CONNECTION (a) What cell structures best...Ch. 6 - SCIENTIFIC INQUIRY Imagine protein X, destined to...Ch. 6 - WRITE ABOUT A THEME: ORGANIZATION Considering some...Ch. 6 - SYNTHESIZE YOUR KNOWLEDGE The cells in this SEM...
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- VISUALIZE Sketch a simple flow diagram that shows the relationships among the following: RNA, translation, DNA, transcription, and polypeptide.arrow_forward1. Researchers have discovered a new membrane protein that has three transmembrane domain αhelixes that span the lipid bilayer. a. If the lipid bilayer is 30 Å thick, what is the smallest number of amino acid residues that can be in each α-helixes for them to be long enough to span the bilayer? b. If one of the three α-helixes is titled at a 32° angle relative to an axis perpendicular to the surface of the lipid bilayer, what is the smaller number of amino acid helixes required for that helix to still span the lipid bilayer? c. How many hydrogen bonding interactions would there be in the smallest possible tilted transmembrane α-helix? d. If the tilted α-helix was a 310 helix instead how many amino acid residues would be required to span the lipid bilayer? How many amino acid residues would be required if it was a π-helix?arrow_forwardExplain how the amphipathic (containing both hydrophobic and hydrophilic sides) protein (shown; left)would be anchored in the phospholipid bilayer (shown; right); which portion do you predict would besticking out towards the water? Which portion would be hiding inside the membrane?arrow_forward
- Multipass transmembrane proteins synthesized by ribosomes on the rough endoplasmic reticulum generally have which of the following arrangements of start-transfer and stop-transfer signals? multiple start signals and multiple stop signals (to allow multiple transmembrane regions) multiple start signals, but only one stop signal (to allow only one transmembrane region) only one start signal, but multiple stop signals (to allow only one transmembrane region) only one start signal, and only one stop signal (to allow only one transmembrane region) only one stop signal, and only one start signal (to allow only one transmembrane region)arrow_forwardWHAT IF? Imagine a protein that functions in the ERbut requires modification in the Golgi apparatus beforeit can achieve that function. Describe the protein’s paththrough the cell, starting with the mRNA molecule thatspecifies the protein.arrow_forward1-what are the largest element of the cytoskeleton and can dynamically grow and shrink by the addition or subtraction of tubulin subunits. 2-Many less dynamic, more permanent cellular structures such as the nuclear lamina have (????) as the major cytoskeletal component Microtubules Intermediate filaments Microfilaments 3-when a ligand binds a (????) the conformation of the receptor changes, opening a selective pore. GPCR Ligand gated ion channel Ligandase pore Voltage gated ion channelarrow_forward
- Researchers have discovered a new membrane protein that has three transmembrane domain αhelixes that span the lipid bilayer.a. If the lipid bilayer is 30 Å thick, what is the smallest number of amino acid residues thatcan be in each α-helixes for them to be long enough to span the bilayer?arrow_forwardWHAT IF? Some membrane proteins diffuse faster in the plasma membrane when the cytoskeleton or the extracellular matrix is artificially removed than when cells are unperturbed. Explain why.arrow_forwardWatch this video (http://openstaxcollege.org/l/ribosome) to learn about ribosomes. The ribosome binds to the mRNA molecule to start translation of its code into a protein. What happens to the small and large ribosomal subunits at the end of translation?arrow_forward
- MAKE CONNECTIONS Is the flow of ions through a ligand-gated channelan example of active or passive transport? (Review Concepts 7.3 and 7.4.)arrow_forwardWhere is the KV1.1 (a membrane protein) polypeptide synthesized in the cell? (word bank: cytoplasm, nucleus, rough ER, smooth ER, mitochondria) The amino acids that line the outside of the KV1.1 protein (i.e., those in contact with the phospholipid bilayer's fatty acids tails) are more likely to be _______(word bank: hydrophobic, hydrophilic) The KV1.1 protein utilizes __ transport to move the K+ ions across the membrane. (word bank: active, passive) This disease can be caused by missense mutations. In general, how specifically would a missense mutation affect the KV1.1 protein?arrow_forward2 For each protein, identify the following: If the protein is an integral, peripheral, or amphitropic membrane protein. Explain. If the protein monotopic, bitopic, or polytopic. Explain Proteins: 5EH4, 7CNE, 6GIQ, 1GYGarrow_forward
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