Final Jeopardy #1 Cell Membrane
What special lipid forms the cell membrane? Name its water loving and water fearing parts.
Phospholipids. They have a hydrophilic head that likes water and hydrophobic tails that avoid water.
What two processes build and break large molecules? What happens to water in each?
Dehydration synthesis builds molecules and releases water. Hydrolysis breaks molecules apart using water.
Name 3 important properties of water caused by hydrogen bonding.
Hydrogen bonds give water cohesion/surface tension, high specific heat, and make ice less dense so it floats.
Why is water polar, and how does that help it dissolve substances?
Water has a slightly positive side and slightly negative side. These charges help it attract and dissolve many substances.
A phospholipid has two different parts. Which part likes water, and which part avoids water?
the head is hydrophilic and likes water. The tails are hydrophobic and avoid or hate water.
Which process builds larger molecules and releases water, and which process breaks larger molecules apart adding water?
Dehydration synthesis equals builds and water out. Hydrolysis equals breaks and water in.
Stick = Cohesion Water stick to water
Stable = high specific heat helps keep temperature stable
Float = ice is less dense than water, so ice floats
What has a slightly positive side and a slightly negative side. What property does this give water, and how does it help water?
Water is polar. It's positive and negative sides help it dissolve many substances.