We are going to work on the Membrane Formation Model, which
focuses on the nature of lipids in water.
You can change the strength of the water-water force and the water-oil
force, among others. When we ran the
program and manipulated the variables, we noticed that the water molecules
would oftentimes clump together and the lipids would surround them, with their
hydrophilic head groups being attracted to the water molecules. Thus, we wanted to see if we could manipulate
the model to show different membrane formations, such as a bilayer or even a
monolayer.
Chemistry NGSS standards:
|
HS-PS1-3.
|
Plan and conduct an investigation
to gather evidence to
compare the structure of substances
at the bulk scale to
infer the strength of electrical forces
between particles.
[Clarification Statement: Emphasis
is on understanding the
strengths of forces between
particles, not on naming specific
intermolecular forces (such as
dipole-dipole). Examples of particles
could include ions, atoms,
molecules, and networked materials
(such as graphite).
|
Biology NGSS
standards:
HS-LS1-2. Develop and use a model to illustrate the
hierarchical
organization of interacting systems that provide specific functions
within multicellular organisms.
The connections: The cell membrane is one of the structural
components of a cell. Furthermore, the cell membrane is fluid and includes
structural and functional proteins. The phospholipid bilayer is formed and held
by hydrophilic and hydrophobic molecules.
Thoughts for expansion:
1.
Adding another molecule within the program that
can either hydrophobic or hydrophilic interactions, or maybe even both.
2.
Creating other membrane formations.
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