Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 2.3, Problem 1HYEW
The slap of a belly flop provides firsthand experience of the power of cohesion among water molecules. Because of the hydrogen bonds that interconnect its molecules, the water surface resists being broken. When you suddenly force a large number of water molecules apart with your belly, the result can be a bit painful. Do you think that belly-flopping into a pool of (nonpolar) vegetable oil would hurt as much? If you encountered a deep pool filled with vegetable oil, could you float or swim in it?
Why It Hurts So Much to Do a Belly Flop?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Ceramides work in tandem with cholesterol and saturated fatty acids to give your skin water impermeability. Explain how the structure of these types of molecules would in fact lead to skin being water-impermeable.
The diagram below illustrates the molecular structure of the cell membrane.
The phospholipid bilayer of a cell membrane
A
B
polar
group
с
phosphate
glycerol
Which of the following is false about the way in which the cell membrane maintains its structure?
D
water
water
The different components of an individual phospholipid are held by covalent bonds.
The attraction between the individual lipid tails inside the cell membrane is maintained
by van der Waals forces.
The attraction between the phosphate groups and the water molecules inside and out.
side of the cell is maintained by hydrogen bonds.
The bonds between the individual phospholipids that make up the cell membrane are
connected by covalent bonds.
Which of the following is a true statement?
Sphingolipids contain 2 hydrophobic, acyl chains
Phospholipids contain 3 hydrophobic acyl chains
Sphingolipids are completely no-polar, hydrophobic molecules
The different types of phospholipids do not have different physical properties when in the membrane
Chapter 2 Solutions
Biology
Ch. 2.1 - What is the mass number of hydrogen? Of helium?Ch. 2.1 - Unstable Atoms Unleashed Because exposure to...Ch. 2.1 - Prob. 2TCCh. 2.1 - What causes the coals of a campfire to glow?Ch. 2.1 - In addition to lower brain activity, what other...Ch. 2.1 - define clement and atom?Ch. 2.1 - Prob. 2CYLCh. 2.1 - explain atomic number and mass number?Ch. 2.1 - explain radioactivity and its dangers and...Ch. 2.1 - describe electron shells?
Ch. 2.2 - At a physical exam, Thomas, a sedentary...Ch. 2.2 - Prob. 1CYLCh. 2.2 - Prob. 2CYLCh. 2.2 - explain atomic number and mass number?Ch. 2.3 - The slap of a belly flop provides firsthand...Ch. 2.3 - Prob. 1TCCh. 2.3 - Predict how a drop of water on an oil-coated...Ch. 2.3 - Prob. 3TCCh. 2.3 - Prob. 1CYLCh. 2.3 - Prob. 2CYLCh. 2.3 - explain atomic number and mass number?Ch. 2.3 - Prob. 1CTCh. 2 - Which of the following is false? a. An dement is...Ch. 2 - Prob. 2MCCh. 2 - Isotopes are defined as a. atoms of the same...Ch. 2 - Prob. 4MCCh. 2 - Prob. 5MCCh. 2 - An atom consists of an atomic nucleus composed of...Ch. 2 - An atom that has lost or gained one or more...Ch. 2 - Prob. 3FIBCh. 2 - Prob. 4FIBCh. 2 - Water is described as __________ because each...Ch. 2 - Prob. 1RQCh. 2 - Distinguish between atoms and molecules and among...Ch. 2 - Prob. 3RQCh. 2 - Prob. 4RQCh. 2 - Prob. 5RQCh. 2 - Prob. 6RQCh. 2 - Prob. 7RQCh. 2 - Detergents help clean by dispersing fats and oils...Ch. 2 - Prob. 2ACCh. 2 - Prob. 3AC
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- In an experiment, a 0.001 (mole fraction) solution of polysaccharide in water is made and is placed in the compartment A (see Figure below). Compartment B is filled with pure water. The two compartments are separated by a porous semi-permeable membrane that allows the exchange of water molecules between the two compartments, but not that of the larger polysaccharide molecules a) Show that the chemical potential of water in compartment A is lower than that in compartment B by 2.48 J/mol. b) As a result of this chemical potential difference, water molecules will move from compartment B to compartment A. This causes the pressure in compartment A, relative to that in B, to increase. How would this affect the chemical potential of water in compartment B? When would the diffusion of water from B to A cease (i.e. equilibrium is achieved)? c) Using your answer to part (b), work out the difference between the pressure in compartment A and B when…arrow_forwardHow do phospholipids interact with water molecules? Phospholipids do not interact with water because water is polar and lipids are nonpolar. The polar heads interact with water; the nonpolar tails do not. The polar heads avoid water; the nonpolar tails attract water (because water is polar and opposites attract). Phospholipids dissolve in water.arrow_forwardWhich of the following characteristics of a water-insoluble substance is most important in governing its diffusibility through a cell membrane? a. Molecular weight b. Electrical charge c. Lipid solubility d. Diameter e. Three-dimensional shapearrow_forward
- How do you determine the polarity of a molecule?arrow_forwardDiagram 1 below illustrates a model of a phospholipid. Diagram 2 is a schematic of a single layer of water molecules in a rectangular dish. A. Describe or draw how phospholipid molecules will orient themselves if in contact with the water molecules in positions labeled A and B? B. Describe or draw how phospholipid molecules will orient themselves if in contact with the water molecules in positions labeled C? C. Explain the rationale behind your description or drawing.arrow_forwardPhospholipid molecules were suspended in a mixture made up of water/oil. Describe the molecular arrangement that will occur and provide explanation for the arrangement of the molecules in the aqueous/oil mixture environment and its application in cell membrane functionsarrow_forward
- select the false statement regarding phospholipid bilayer membranes. phospholipid bilayer part of the biological membrane has to be highly fluid to support its biological function. One of the forces driving phospholipid aggregation are Vender Waals interaction. Aggregation of phospholipid molecules is favored by higher entropy of water molecules in the aggregated state. Fluidity of phospholipid membranes is lower with higher content of unsaturated fatty acids. Phospholipid membrane containing unnatural trans unsaturated fatty acid are more rigid.arrow_forwardA student has 3 unknown molecules. In order to better understand the properties of these molecules, the student adds them to water and notes the following results: Substance A- Creates a layer on top of the water Substance B- Dissolves in water Substance C- Settles at the bottom after being mixed with water Which of these substances is most likely to form a biological membrane? O a. Any of the substances above could create a biological membrane O b. Substance B O c. Substance C O d. There is not enough information to come to a conclusion e. Substance Aarrow_forwardCalcium is a mineral needed by the body to strengthen the bones and for muscular contraction. If the concentration of calcium inside a cell is 0.3% while that of the surrounding fluid is 0.1%, how can the cell obtain more calcium?arrow_forward
- Which of the following describes how regions of phospholipids are arranged in the cell membrane? Hydrophobic fatty acid regions are positioned toward polar environments. Hydrophilic phosphate regions are positioned toward nonpolar environments. Hydrophilic phosphate regions face each other within the interior of the cell membrane. Hydrophobic fatty acid regions face each other within the interior of the cell membrane.arrow_forwardInformation: Osmotic pressure is the pressure that a solvent exerts against a semipermeable membrane, such as a cell membrane. The higher the solute concentration, the lower the osmotic pressure. Red blood cells have an osmotic pressure equal to that of a 0.90% (m/v) solution of sodium chloride and 5.0% (m/v) solution of dextrose. A solution that has a higher concentration that this is called hypertonic; one with a lower concentration is called hypotonic. Osmotic pressure is an important factor affecting cells. Osmoregulation is the homeostasis mechanism of an organism to reach balance in osmotic pressure.Hypertonicity is the presence of a solution that causes cells to shrink.Hypotonicity is the presence of a solution that causes cells to swell.Isotonicity is the presence of a solution that produces no change in cell volume.When a biological cell is in a hypotonic environment, the cell interior accumulates water, water flows across the cell membrane into the cell, causing it to…arrow_forwardWhich statement is correct about the phospholipids in membranes? The polar heads face inward The non-polar tails face outward The non-polar tails are hydrophilic A bilayer forms with the heads facing outward and the tails facing inwardarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Macromolecules | Classes and Functions; Author: 2 Minute Classroom;https://www.youtube.com/watch?v=V5hhrDFo8Vk;License: Standard youtube license