Claro que yo no sabo como Hacer eso
Answer:
A
Explanation:
Proteins are formed by amino acids which are linked together.
Answer:
The biological concept of evolution.
Explanation:
The process by which living organisms defy the environment that they habit and shapes every single trait of them. According to evolution every species that has ever existed in this world has suffered modifications by different reasons (mutation, for instance) and environment was the responsible to select the ones that were more suitable to last. The process of evolution can be delusional because it may be necessary millions of years to fulfill its mechanisms, specially in complex organisms like mammals.
Answer:
D. Viruses can avoid activating the adaptive immune system if they do not change their surface antigens once they have been recognized by T and B cells.
E. People who were affected with the smallpox virus before cowpox virus were naturally immune to the smallpox virus because the viruses shared some common antigens and the memory cells that recognized cowpox antigens responded to smallpox antigens as well.
F. Helper T cells can kill cells that are infected with viruses and Cytotoxic T cells are known to activate B cells.
