Anatomy & Physiology, Books a la Carte Edition (6th Edition)
6th Edition
ISBN: 9780134283401
Author: Elaine N. Marieb; Katja Hoehn
Publisher: PEARSON
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Textbook Question
Chapter 3.2, Problem 4CYU
Phospholipid tails can be saturated or unsaturated (Chapter 2). (asyou learned in the chapter Chemistry Comes Alive).This is true of phospholipids in plasma membranes as well. Which type-saturated or unsaturated-would make the membrane more fluid? Why?
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Chapter 3 Solutions
Anatomy & Physiology, Books a la Carte Edition (6th Edition)
Ch. 3.1 - Summarize the four key points of the cell theory.Ch. 3.1 - How would you explain the meaning of a generalized...Ch. 3.2 - What basic structure do all cellular membranes...Ch. 3.2 - What is the importance of the glycocalyx in cell...Ch. 3.2 - Prob. 3CYUCh. 3.2 - Phospholipid tails can be saturated or unsaturated...Ch. 3.3 - What is the energy source for all types of...Ch. 3.3 - What determines the direction of any diffusion...Ch. 3.3 - What are the two types of facilitated diffusion...Ch. 3.4 - What happens when the Na+-K+ pump is...
Ch. 3.4 - As a cell grows, its plasma membrane expands. Does...Ch. 3.4 - Prob. 3CYUCh. 3.4 - Which vesicular transport process allows a cell to...Ch. 3.5 - What process establishes the resting membrane...Ch. 3.5 - Is the inside of the plasma membrane negative or...Ch. 3.6 - What term is used to indicate signaling chemicals...Ch. 3.7 - Which organelle is the major site of ATP...Ch. 3.7 - What are three organelles involved in protein...Ch. 3.7 - Compare the functions of lysosomes and...Ch. 3.7 - How are microtubules and microfilaments related...Ch. 3.7 - Prob. 21CYUCh. 3.8 - Prob. 22CYUCh. 3.9 - If a cell ejects or loses its nucleus, what is its...Ch. 3.9 - What is the role of nucleoli?Ch. 3.9 - What is the role of nucleoli?Ch. 3.10 - If one of the DNA strands being replicated reads...Ch. 3.10 - During what phase of the cell cycle is DNA...Ch. 3.10 - What are three events occurring in prophase that...Ch. 3.11 - Codons and anticodons are both three-base...Ch. 3.11 - How do the A, P, and E ribosomal sites differ...Ch. 3.11 - What is the role of DNA in transcription?Ch. 3.12 - What is the importance of ubiquitin in the life of...Ch. 3.12 - Prob. 2CYUCh. 3 - The smallest unit capable of life by itself is (a)...Ch. 3 - Prob. 2MCCh. 3 - Prob. 3MCCh. 3 - The term used to describe the type of solution in...Ch. 3 - Osmosis always involves (a) a selectively...Ch. 3 - Prob. 6MCCh. 3 - Prob. 7MCCh. 3 - The endocytotic process in which a sampling of...Ch. 3 - Prob. 9MCCh. 3 - The nuclear substance composed of histone proteins...Ch. 3 - The information sequence that determines the...Ch. 3 - Mutations may be caused by (a) X rays, (b) certain...Ch. 3 - The phase of mitosis during which centrioles each...Ch. 3 - Final preparations for cell division are made...Ch. 3 - The RNA synthesized on one of the DNA strands is...Ch. 3 - The RNA species that travels from the nucleus to...Ch. 3 - If DNA has a sequence of AAA, then a segment of...Ch. 3 - A nerve cell and a lymphocyte are presumed to...Ch. 3 - Prob. 19MCCh. 3 - Explain why mitosis can be thought of as cellular...Ch. 3 - Contrast the roles of ER-bound ribosomes with...Ch. 3 - Cells lining the trachea have whiplike motile...Ch. 3 - Name the three phases of interphase and describe...Ch. 3 - Comment on the role of the sodium-potassium pump...Ch. 3 - Differentiate between primary and secondary active...Ch. 3 - Cell division typically yields two daughter cells,...
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- Cell membranes consists mainly of ________ and ________ . a. lipids; carbohydrates c. lipids; phospholipids b. phospholipids; protein d. phospholipids; ECMarrow_forwardWhich plasma membrane component can be either found on its surface or embedded in the membrane structure? a. protein b. cholesterol c. carbohydrate d. phospholipidarrow_forwardWhy is it advantageous for the cell membrane to be fluid in nature?arrow_forward
- Describe ONE modification that could happen to the phospholipids in a membrane that would increase the permeability of the membrane to small non-polar molecules such as oxygen gas. Explain why this modification would increase membrane permeability.arrow_forwardWhat would happen if the plasma membrane were madeprimarily of a hydrophilic substance such as carbohydrate? Which of the major themes at the end of chapter 1does this point best exemplify?arrow_forwardDescribe the chemical composition of membranes. What are the two most critical functions of membranes? What contributes to membrane fluidity and rigidity? Explain Diffusion. What are the differences between Osmosis and Dialysis? Explain the differences between Iso, Hypo, and Hypertonic conditions. If the solutions is Hypertonic then the cell would be?arrow_forward
- Cell membranes are composed of a lipid bilayer. How does the type of lipid bilayer affect its properties?arrow_forwardEndoplasmic reticulum is an important part of endomembrane system of a cell. Explainhow the structure of endoplasmic reticulum depends on cell specialization.arrow_forwardYour friend notes that Gatorade has electrolytes like sodium and potassium chloride. He figures that if a few electrolytes are good for you, then a lot must be even better. Following this logic, he adds nearly a tablespoonful of salt to his Gatorade. What kind of solution is his Gatorade now (hypotonic, isotonic, or hypertonic)? What will likely happen to his cells if he drinks this liquid?arrow_forward
- You take a drink of distilled water, this is effectively water that has no solutes dissolved in the water. If you hold the water in your mouth for a few seconds, what happens to the cells in your tonguewhile you hold the water in your mouth and why?arrow_forwardIn general terms, what would you expect to be different about the permeability of a lipid bilayer made of phospholipids (modern cells) and a bilayer made of fatty acids (protocell)?arrow_forwardMany old time folk remedies made use of the priciples of diffusion and osmosis. Suppose you had a sliver of wood or another small foreign object embedded under your skin. It is slightly swollen and hurts. Your grandma or older neighbor tells you to soak the affected part in salt water. Using your knowledge of diffusion/osmosis, how do you think this would affect the injury? Will it help you get the sliver out?arrow_forward
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