Which of the following occurs when a cell repairs a double-strand DNA break by the process of nonhomologous end joining? Choose one:

The DNA sequence at the site of repair is altered by a short deletion.
The DNA sequence at the site of repair matches that of a homologous chromosome.
The DNA sequence at the site of repair is altered by a short addition.
The original DNA sequence at the site of repair is reconstituted with 100% accuracy.
The DNA sequence at the site of repair contains a short segment of telomere DNA.

Which of the following statements is correct in hour our immune system responds to a potential pathogen? a. the adapted immune system will call on the innate immune system to destroy the pathogen. b. b cells will start reading the antigen code immediately and call t cells to assist in destroying the pathogen. c. the skin will be the first line of defense, and then the many phagocytes in the bloodstream will attempt to consume the possible pathogen. d. the t-cells in the adapted immune systems are the first to recognize the pathogen vaccines are weakened forms of disease causing microorganisms, which are given to patients to prevent disease. after the vaccine is administered, the immune system responds by creating a(n) to recognize the a. antigen, antibody b. antibody, antigen c. antibody, antibiotic d. antibiotic, antibody