Limestone is a sedimentary rock composed primarily of calcium carbonate (CaCO3) in the form of the mineral calcite. It most commonly forms in clear, warm, shallow marine waters. It is usually an organic sedimentary rock that forms from the accumulation of shell, coral, algal, and fecal debris.
Wisdom teeth are an example of vestigial structures. Vestigial structures are structures that may be inherited to enhance fitness; however, if they are not present in an organism, then there is no real harm to the organism.. The wisdom teeth, if inherited, help a person eat and mechanically digest the food; however, if a person's wisdom teeth are missing, they do not encounter many problems in chewing.
The answer is no, fibrocartilage cannot provide articular surface as smooth as the original hyaline cartilage.
This is because these two cartilages are different in composition (structure) and thus provide slightly different function.
Fibrocartilage is stiff and contains many collagen fibers type I and II, while hyaline cartilage is a soft cartilage that contains collage fibers type I. Fibrocartilage contains only few chondrocytes in lacunae, while hyaline cartilage has large number of them. As a result, fibrocartilage provide a restricted mobility, while hyaline cartilage enables smooth movements.
The cell cycle is divided into the following five stages:
1. Interphase: The cell increase in size. The cell synthesize a complete copy of DNA in its nucleus.
2. Prophase: Chromosomes condense and are more visible. The nuclear membrane disappears. Centrioles separated at move to the opposite poles of the cell. Spindle fibers forms and radiate towards the center of the cell.
3. Metaphase: Chromosomes line up across the middle of the cell. Spindle fibres connect the centromere of each sister chromatid to the cell poles.
4. Anaphase: The centromere that join the sister chromatid split. Sister chromatids separate becoming individual chromosomes and moving to the opposite poles of the cell.
5. Telophase: Chromosomes uncoil. A nuclear envelope forms around each chromosome. Spindle fiber breaks down and dissolves.<span />
If you’ve ever burned yourself on a metal pot while waiting for water to boil, you know that water heats up much more slowly than metal. In fact, water has a stronger resistance to temperature change than most other substances. What property of water causes this
