A middle-aged man has a communicable disease caused by a virus that is excreted in the feces. Which of the following measures could be least effective or ineffective in limiting the spread of the infection?
A. Isolation of the infected individual
B. Administration of penicillin or similar antibacterial antibiotic
C. Sanitary disposal of feces
D. Thorough washing of hands after direct contact with the patient
Question 2
During DNA synthesis, the chemical structure of the bases means that adenine always pairs with thymine and guanine always pairs with cytosine.
Indicate whether the statement is true or false