Cancer is unchecked cell growth. Mutations in genes can cause cancer by accelerating cell division rates or inhibiting normal controls on the system, such as cell cycle arrest or programmed cell death. As a mass of cancerous cells grows, it can develop into a tumor
The IA allele encodes the A blood group antigen, IB allele encodes B, whereas, i encodes O blood group antigen.
<h3>What is antigen?</h3>
Any substance that causes the body to make an immune response against foreign substance. Antigens include toxins, chemicals, bacteria, viruses etc that come from outside the body.
So we can conclude that the IA allele encodes the A blood group antigen, IB allele encodes B, whereas, i encodes O blood group antigen.
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.....estrogen and progesterone are low
In women, menstrual flow occurs
as a result of the actions of some hormone between the pituitary gland in the
brain and the ovaries. Female sex hormones prepare the body for fertilization
every month and without fertilization there is menstrual flow. Menstruation is activated
by reduced levels of the hormones estrogen and progesterone at the end of the
previous menstrual flow.
Answer: 1. Created or nor destroyed. 2. converted from one form to another. 3. Friction is the resistance to motion of one object moving relative to another. It is not a fundamental force, like gravity or electromagnetism. Instead, scientists believe it is the result of the electromagnetic attraction between charged particles in two touching surfaces. 4. kinetic. 6. Friction, Mechanical,Thermal. 7. One way to reduce friction is to use lubricants. Friction can also be reduced by switching from sliding kinetic friction to rolling kinetic friction. Another way to reduce friction is to make surfaces that rub against each other smoother. By polishing the surface, as polishing makes the surface smooth and friction can be reduced. Using lubricants such as oil or grease can reduce the friction between the surfaces. When objects are rolled over the surface, the friction between the rolled object and surface can be reduced by using ball bearings.
Explanation:
