Fluid Flies Cell membranes balance the need to remain intact with the need to move during function. Researchers studying fruit flies discovered that the cell membranes of these ectothermic animals changed throughout the day. During the night, when the environment was cool, the membranes were composed of mostly unsaturated phospholipids, leading to a very flexible structure. During the day, when the environment was warm, the membranes were composed of mostly saturated phospholipids, leading to a less flexible structure. Use this information and your understanding of biology to answer questions 21-25. 21. The change in the structure of the membrane is likely a case of adaptive plasticity. O True O False

Fluid Flies Cell membranes balance the need to remain intact with the need to move during function. Researchers studying fruit flies discovered that the cell membranes of these ectothermic animals changed throughout the day. During the night, when the environment was cool, the membranes were composed of mostly unsaturated phospholipids, leading to a very flexible structure. During the day, when the environment was warm, the membranes were composed of mostly saturated phospholipids, leading to a less flexible structure. Use this information and your understanding of biology to answer questions 21-25. 21. The change in the structure of the membrane is likely a case of adaptive plasticity. O True O False

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter3: The Plasma Membrane And Membrane Potential

Section: Chapter Questions

Problem 5RE: Using the answer code on the right, indicate which membrane component is responsible for the...

See similar textbooks

Similar questions

Cholesterol is abundant in the plasma membrane. Would you expect cholesterol to flipbetween the two leaflets of the membrane faster than phospholipids, or slower, or atthe same rate?
Plasma membranes contain many different types of lipid molecules. What arethe three main types of lipid molecules found in plasma membranes? How arethe three types similar, and how are they different?
The composition of a cell membrane is not uniform for all types of cells.Some cell membranes are more rigid than others. Rigidity is determinedby a variety of factors, one of which is the structure of the carbon chains in the phospholipids that comprise the membrane. One example of aphospholipid was drawn, and another, having C–C double bonds in its carbon chains, is drawn here. Which phospholipid would be present in the more rigid cell membrane and why?
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.
A biochemist performed a subcellular fractionion ( a separation of cell organelles) and them run TLC to measure the relative presense of defererent lipids. In one fraction there was an absence of cholesterol. What fraction was it? O plasma membrane O cytoplasm O lysosome mitochondria O nucleus
A phospholipid bilayer with equal amounts of saturated and unsaturated fatty acids displays a specific permeability to glucose. What effect will increasing the proportion of unsaturated fatty acids in the bilayer have on the membrane's permeability to glucose?
Draw the structure of these phospholipids:- a cephalin formed from two molecules of stearic acid
The fluid mosaic model of membrane structure has been very useful in explaining membrane behavior. However, the description of membrane as proteins floating in a phospholipid sea is oversimplified. Describe some components of membrane that are restricted in their lateral motion.
Describe 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?
The tails of the phospholipids of the plasma membrane are composed of _____ and are _____? a. phosphate groups; hydrophobic b. fatty acid groups; hydrophilic c. phosphate groups; hydrophilic d. fatty acid groups; hydrophobic
The plasma membrane is composed of a variety of lipid molecules. 1. Phosphatidylethanolamine 2. Phosphatidylcholine 3. Phosphatidylinositol 4. Phosphatidylserine 5. Sphingomyelin 6. Glycolipids 7. Cholesterol. Which lipids contain sugar molecules?
Describe the phospholipid structure and how its arrangement in the plasma membrane allows for the separation of internal and external environments as well as its selectively permeable nature.