Someone MUST know...Cells in your hair follicles produce the protein keratin?

Question

Cells in your hair follicles produce the protein keratin, which is a primary component of hair. Cells in your liver do not produce keratin. Why does this specialization occur?

A.Hair follicle cells contain different genes than liver cells.

B.Hair follicle cells do not produce DNA, but liver cells do.

C.Different types of genes are activated in liver cells and hair follicle cells.

D.Hair follicle cells contain recombinant DNA.

Answer 1

C. like all the other cells, every tissue have different functions because of the genes that are activated in it

Answer 2

Well, to really answer your question you have to know how cells work. Each cell is specific to the type of organ or system they make up. It isn't that they are different genes, it's that they are different types of cells. Keratin is also found in skin cells, and finger and toe nails. Keratin is part of what makes up your skin color. DNA has nothing to do with the type of cell it is. DNA is what makes you you, but it can be found anywhere in the body. They can take the hair follicle, that has the root attached and a whole host of tests to give them not only your identity, but also your DNA make-up. It can tell you if you have a genetic disorder, or may have a problem with a genetic disorder. It can tell you almost everything about what makes up you. Interesting side note: You hair root is very much alive, as is your hair. They say that hair is dead cells, it isn't. Once that root is pulled out, hair won't grow in the follicle anymore, or will take longer to grow. That's why waxing works for so long, and why using a laser works. Anyways, just thought I would clear up a few things and add an interesting tid-bit.

Answer 3

C.Different types of genes are activated in liver cells and hair follicle cells

Answer 4

A is your answer keratin is involved in the integumentary system (skin) cell specialization of the liver suits a completely different purpose, this is the meaning of specialization another example Human development begins when a sperm fertilizes an egg and creates a single totipotent cell (zygote). In the first hours after fertilization, this cell divides into identical totipotent cells. Approximately four days after fertilization and after several cycles of cell division, these totipotent cells begin to specialize. Totipotent cells have total potential. They can specialize into pluripotent cells that can give rise to most, but not all, of the tissues necessary for fetal development. Pluripotent cells undergo further specialization into multipotent cells that are committed to give rise to cells that have a particular function. For example, multipotent blood stem cells give rise to the red cells, white cells and platelets in the blood. Importantly, totipotent cells must be able to differentiate not only into any cell in the organism, but also into the extraembryonic tissue associated with that organism. For example, human stem cells are considered totipotent only if they can develop into any cell in the body, or into placental cells that do not become part of the developing fetus. This fact is an important aspect of the stem cell controversy because the human embryonic stem cells used for research purposes are pluripotent; they are collected from human embryos that have developed past the totipotent cell stage. All human embryos used in stem cell experimentation are destroyed in the process.

Answer 5

C. 100% sure.

Answer 6

C.