____ are an organization of many similar cells working together to perform a specific function.
A. Cells
B. Organs
C. Tissues
D. Systems
Answer: C
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When the body has become unresponsive to a particular drug after prolonged exposure:
A) Tolerance B) Addiction C) Dependence D) Abuse
Negative feedback means that the body acts to reverse the direction of change in order to ________.
A. increase levels B. regain homeostasis C. decrease levels D. remove harmful stimuli
Brain damage among many other things can cause deafness
Indicate whether the statement is true or false
Ionization occurs when
the proton in the nucleus exchanges an electron with the neutron, which creates energy. electrons are bundled together to create more energy. an electrically neutral atom loses an electron and becomes a positively charged ion and the fre electron a negative ion. a positive electron exchanges its positiveness for a proton.