3. Titan Life? Let's now think about the possibility of life on Titan (a moon of Saturn), which has lakes of liquid ethane and methane. a) The chemical structures of methane, ethane, and water are shown below. Label each molecule as "polar" or "nonpolar." H Methane -H H- H -C-C-NOU H Ethane H H H b) Cell membranes in Earth life are made of phospholipids (see figure below). We often represent these schematically as a ball and stick (see picture), where the ball represents the polar head and the stick represents the nonpolar tail. Sketch a drawing of vesicles (or cell membranes) in water, using these ball-and-stick representations for the lipids making up the membrane. Indicate in your sketch where water is present (e.g. inside or outside the vesicle? In the membrane?) Hydrophilic (polar) head H-C Hydrophobic (non-polar) tail Water c) How would these phospholipids behave in solutions of ethane/methane on Titan? Draw a sketch of a potential structure that the lipids would form in ethane/methane solutions. (Note that a number of answers are possible.) Indicate in your sketch where the ethane/methane solution will be in or around the structure.
3. Titan Life? Let's now think about the possibility of life on Titan (a moon of Saturn), which has lakes of liquid ethane and methane. a) The chemical structures of methane, ethane, and water are shown below. Label each molecule as "polar" or "nonpolar." H Methane -H H- H -C-C-NOU H Ethane H H H b) Cell membranes in Earth life are made of phospholipids (see figure below). We often represent these schematically as a ball and stick (see picture), where the ball represents the polar head and the stick represents the nonpolar tail. Sketch a drawing of vesicles (or cell membranes) in water, using these ball-and-stick representations for the lipids making up the membrane. Indicate in your sketch where water is present (e.g. inside or outside the vesicle? In the membrane?) Hydrophilic (polar) head H-C Hydrophobic (non-polar) tail Water c) How would these phospholipids behave in solutions of ethane/methane on Titan? Draw a sketch of a potential structure that the lipids would form in ethane/methane solutions. (Note that a number of answers are possible.) Indicate in your sketch where the ethane/methane solution will be in or around the structure.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:2:21 PM Mon Feb 26
3. Titan Life?
Let's now think about the possibility of life on Titan (a moon of Saturn), which has lakes of
liquid ethane and methane.
H
H
-H
+
H
Methane
a) The chemical structures of methane, ethane, and water are shown below. Label each
molecule as "polar" or "nonpolar."
H
HC-C
H₂
O
H-
H₂ 114₂
H
N(CH),
·C
H
Ethane
H
C
H
b) Cell membranes in Earth life are made of phospholipids (see figure below). We often
represent these schematically as a ball and stick (see picture), where the ball represents the
polar head and the stick represents the nonpolar tail. Sketch a drawing of vesicles (or cell
membranes) in water, using these ball-and-stick representations for the lipids making up the
membrane. Indicate in your sketch where water is present (e.g. inside or outside the vesicle?
In the membrane?)
H
●●●
lyceum.bates.edu
Hydrophilic (polar) head
Hydrophobic (non-polar) tail
H-O
Water
c) How would these phospholipids behave in solutions of ethane/methane on Titan? Draw a
sketch of a potential structure that the lipids would form in ethane/methane solutions. (Note
that a number of answers are possible.) Indicate in your sketch where the ethane/methane
solution will be in or around the structure.
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