Principles of Anatomy and Physiology
15th Edition
ISBN: 9781119329398
Author: Gerard J Tortora, Bryan Derrickson
Publisher: John Wiley & Sons Inc
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Textbook Question
Chapter 3, Problem 3CP
What substances can and cannot diffuse through the lipid bilayer?
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Chapter 3 Solutions
Principles of Anatomy and Physiology
Ch. 3 - Prob. 1CPCh. 3 - Checkpoint 2:
How do hydrophobic and hydrophilic...Ch. 3 - What substances can and cannot diffuse through the...Ch. 3 - “The proteins present in a plasma membrane...Ch. 3 - Checkpoint 5:
How does cholesterol affect membrane...Ch. 3 - Checkpoint 6:
Why are membranes said to have...Ch. 3 - Checkpoint 7:
What factors contribute to an...Ch. 3 - Checkpoint 8:
What factors can increase the rate...Ch. 3 - Checkpoint 9:
How does simple diffusion compare...Ch. 3 - Prob. 10CP
Ch. 3 - Distinguish among isotonic, hypotonic, and...Ch. 3 - What is the key difference between passive and...Ch. 3 - Checkpoint 13:
How do symporters and antiporters...Ch. 3 - What are the sources of cellular energy for active...Ch. 3 - Checkpoint 15:
In what ways are endocytosis and...Ch. 3 - What are some of the chemicals present in cytosol?Ch. 3 - What is the function of cytosol?Ch. 3 - Define an organelle.Ch. 3 - Which organelles are surrounded by a membrane and...Ch. 3 - Checkpoint 20:
Which organelles contribute to...Ch. 3 - Checkpoint 21:
What happens on the cristae and in...Ch. 3 - Checkpoint 22:
How do large particles enter and...Ch. 3 - Where are ribosomes produced?Ch. 3 - Checkpoint 24:
How is DNA packed in the...Ch. 3 - Checkpoint 25:
What is meant by the term gene...Ch. 3 - What is the difference between transcription and...Ch. 3 - Distinguish between somatic and reproductive cell...Ch. 3 - What is the significance of interphase?Ch. 3 - Outline the major events of each stage of the...Ch. 3 - Prob. 30CPCh. 3 - How are haploid and diploid cells different?Ch. 3 - What axe homologous chromosomes?Ch. 3 - Prob. 33CPCh. 3 - What is one reason that some tissues become...Ch. 3 - CTQ 1: Mucin is a protein present in saliva and...Ch. 3 - CTQ 2: Sam does not consume alcohol, whereas his...Ch. 3 - CTQ 3: Marathon runners can become dehydrated due...
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- What TWO factors keep integral trans-membrane proteins embedded firmly within the lipid bilayer?arrow_forwardDescribe the lipid bilayer structure of a cell membrane. What are the roles of proteins in membrane structure?arrow_forwardwhat purpose does the plasma membrane’s hydrophobic interior serve?arrow_forward
- In what way do proteins embedded in a membrane differ structurally from soluble proteins?arrow_forward27. Ions cannot cross directly through a lipid bilayer, yet we know they travel in and out of cells. Which of the following is/are true about how ions diffuse cross membranes? a) They diffuse down their concentration gradients. b) They diffuse through channels formed by integral membrane proteins. c) They diffuse down their electrical gradients. d) a and c e) a, b and carrow_forwardWhat are the four classifications of membrane proteins? How is each positioned with respect to the bilayer?arrow_forward
- The phospholipid portion of biological membranes is referred to as "selectively permeable". What does this term mean? What types of substances can cross the phospholipid bilayer? What types cannot?arrow_forwardWhat macromolecules stiffens the cell/ plasma membrane?arrow_forwardWhat are the functional significance of the fluidity of a cell membrane?arrow_forward
- What drives the movement of lipid molecules and proteins within the bilayer? How can such movement be measured?arrow_forwardWhich intermolecular process primarily drives the formation of a bilayer when phospholipids are added to water?arrow_forwardExplain how membrane lipids self-assemble into bimolecular sheets.arrow_forward
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