Answer:
diverse proteins embedded in a phospholipid bilayer
Explanation:
According to fluid mosaic model the cell membrane is made of bilayer of phospholipid. Many proteins are embedded in this bi layer. Carbohydrate and cholesterol are also found in different forms. Carbohydrate can either be attached to the embedded protein in which case it is called as glycoprotein or it can be connected to the lipid molecule in layer and called as glycolipid.
Proteins can be found in two forms too. They can either be embedded in the layer i.e. they can penetrate single or both layers. These proteins are called as integral proteins. They can also be present on one side of the membrane and not penetrate the lipid bilayer in which case they are called as peripheral proteins.
Answer:
A is called Prophase
B is called Anaphase
C is called Metaphase
D is called Telophase
Explanation:
These can get confusing but I'll explain it for you.
The first stage of <u>mitosis</u> is Prophase.
- In this stage the chromosomes become visible and the centrioles separate and move to opposite poles of the cell.
The second stage of <u>mitosis </u>is Metaphase.
- In this stage the chromosomes line up across the center of the cell and become connected to the spindle fiber at their centromere.
The third stage of <u>mitosis</u> is Anaphase.
- In this stage the sister chromatids separate into individual chromosomes and are pulled apart.
The fourth and last stage of <u>mitosis</u> is Telophase.
- During this stage the chromosomes gather at opposite ends of the cell and lose their distinct rod-like shapes. Two new nuclear membranes then form around each of the two regions of DNA and the spindle fibers disappear.
The process that follows the last stage of mitosis is called <u>Cytokinesis</u>.
- With two complete copies of the DNA now in two different regions of one cell, the cell membrane will pinch and divide the cytoplasm in half. The result is two individual cells that are identical to the original cell. Each of the two new cells have a complete copy of the DNA and contain all of the organelles that the original cell had.
Hopefully, this eases the problem for you and you understand it better.
Also, this image might help:
Let me know if you any other questions about this.
Good luck:)
Genetic variation describes the genetic differences among individuals of the same species that are naturally occurring. <span>Each genotype within a population usually has different degrees of fitness to an environment. Mating between same species with favored genes guarantees survival of the population in their chosen environment. As the environment changes, the mating behavior between species may again change resulting to a different gene pool to guarantee survival. </span>
Your answer would be D) Carbon dioxide
Hope this helps :)