What did Hershey and Chase use to determine which part of the virus
infected the bacterial cell?
A. radioactive markers
B. small internal cameras
C. chemical dyes

What protects the lining of the stomach from acidic gastric juices?

Are these strong bases, neutral, strong acids, weak acids or weak base household bleach (ph=12.6) fluid in a car's battery (ph of less than 1.0) milk (ph=6.7) stomach contents (ph=2.2) pure water (ph=7)

Types of scientific inquiry that biologist engage in that cannot be completely controlled