killer T cells
The DNA sequence of both of them is different. There is not much difference in both of them, as both are mammals. But this difference is too much for the immunity. Your immunity can identify even the single different amine acid.
The male Japanese beetle has specific proteins on its antennae that can bind to the female pheromone molecule. When the male protein binds to the pheromone, it triggers a cascade of enzymatic reactions within the beetle's body that lead to the molecule being broken down or deactivated.
coded messages in the DNA
CO destroys hemoglobin's ability to transport and release oxygen throughout the body. At the end a person will likely die due to the lack of oxygen be transported to the brain.
Properties of B cell epitopes •The size is determined by the size, shape and amino acid residue of the Ag-binding site on the Ab molecule •The binding involves weak non covalent interaction •Native proteins generally hydrophilic amino acids •Sequential or non-sequential amino acids •Located in mobile regions •Accessible Properties of T cell epitopes •T cell recognize Ag that has been processed in antigenic peptides with MHC •Antigenic peptides recognized by T cells form trimolecular complexes with a T cell receptor and MHC molecules •Internal peptides
This is a compound, a molecule.
C.A molecule that has a symmetrical shape will be a nonpolar molecule.
C.A molecule that has a symmetrical shape will be a nonpolar molecule.
No a molecule is a molecule, polar or nonpolar.
The chlorine molecule destroys the ozone. CFCs were released at ground level during the second half of the twentieth century. Ten years later global winds had spread them around the world and up to the lower stratosphere where the ozone layer is. A combination of forces splits the chlorine from the CFC and it destroys an ozone molecule. The chlorine survives and goes on to find another victim. These CFCs remain in the atmosphere fro 50 to 75 years, so scientists are hoping that by 2060 the ozone layer will have repaired itself.
A)Electrical impulses from the beetle's nervous system B)Chemical signals from the beetle's immune system C)Coded messages in the DNA of the cell nucleus ITS (C)D)Digestive enzymes in the lysosomes of the celL
lactose