The activity of an Enzyme is affected by its environmental
conditions. Changing these alter the rate of reaction caused
by the enzyme. In nature organisms adjust the conditions of their
enzymes to produce an Optimum rate of reaction where necessary
or they may have enzymes which are adapted to function well in
extreme conditions where they live.
Answer:
4. B cells become activated by interacting with helper T cells.
1. B cells display antigens in MHC class II receptors on the cell surface.
2. Antibodies released by plasma cells bind to the antigen so they will be destroyed by other cells of the immune system.
3.B cells rearrange their DNA to create a unique B-cell receptor.
5. B cells undergo clonal expansion.
6. B cells digest antigens that bind to the antibodies on their surface.
Explanation:
B-cells get activated by interacting with helper T cells when they bind to the antigen to receptors i.e (MHC class II receptors on the cell surface) on the surface of the cell. Series of activities such as release by plasma cells which cause rearrangement of B cells causes the cell to divide and proliferate. The process through which daughter cells arise from a parent cell called clonal expansion.
Answer:
Possible blood type of their children is type A and type B blood
Explanation:
A person can have type A, type B, type AB or type O blood.
A woman who has type AB blood marries a man with type O blood.
Parents AB x OO
Possible genotypes AO BO
Possible blood type of their children is type A and type B blood
In the soil, some ______ convert nitrogen to a form that can be used by plants.
prokaryotes
