Lipids

Lipids are consist of fat, phospholipids, and waxes. Lipids is known mainly for fats. Fat provides insulation and energy storage in animals. Its healthy to have fat just not too much of it. It can also be a health issuse. Fats contains two molecules units, glycogen and fatty acids. Phospholipids are constructed like neutral fats except the third fatty acid is replaced by a polar phosphate group. Its pretty cool how the phospholipids arrange themselves in water. They form a double layer so that the polar heads face towards water molecules and nonpolar tails face towards one another, away from water. I think that this is very interesting. I would love to study more about this process. These concepts of molecules seem like they have a mind of there own or a city fill with different molecules doing their job.

Carbohydrates

Three types of Carbohydrates are starch, glycogen, and cellulose. Starches are found in plants, and has a straight chain of glucose, which is sugar, molecules with relatively few side branches. Glycogen is found in animals. It is highly branched polymer of glucose with many side branches. Cellulose are in plants of the cell wall. It is a polymer of glucose which forms microfibrils, the primary. The interesting part of cellulose is that cotton is nearly pure as cellulose. Realizing that cellulose is a very important part in carbohydrates.

Blog 1

I have learned that Natural Selection has a major part in the changes in the world. From animals, plants, and environment. Natural Selection is the process by which species become modified over time. This means that, for example animals that exists centuries ago have changed over time due to the environment. There are hundreds of types of birds in the world which is caused by natural selection. For example, there are two birds that live in the woods, a earthquake comes through the woods and split the woods with a lake going through it. The birds are split apart on each sides of the lake. One bird might grow a longer beak because of its environment, while the other bird develop colors in its fur.

Biology 123

Hello Dr.Platt!