What happens if the immune system fails to produce proteins called antibodies​

Photosynthesis converts light energy to chemical energy. which molecules are the end product of this transformation of energy in this reaction?

'which of these statements about the scientific method is not true? all experiments must follow the same number of steps in the procedure. experiments may be repeated several times. some unexpected results can be beneficial. experimental results may or may not support the hypothesis.

Jason adds the antibiotic penicillin to a bacterial culture. the bacteria develop genetic modifications in their genome, which gives them resistance to the antibiotic penicillin. what caused this genetic modification?