BIOLOGY 1010 QUESTION SET 20 QUIZ
What is the pH of the human stomach?
Answer: 2
If enzymes could only be used once, a cell would need a lot more of which of the following organelles? Rough endoplasmic reticulum Ribosomes Golgi apparatus All of the above
Answer: All of the Above
Both high (boiling) temperatures and low pH cause enzymes to
Answer: Become denatured
If you were developing a drug to block DNA replication in cancer cells, which enzyme would you target?
Answer: DNA polymerase
True or False: All bacteria are optimized to survive at the same temperature and pH.
Answer: False
Which of the following are products of the enzymatic break down of lactose
Answer: Glucose and Galactose
Why is vinegar used in pickling many foods
Answer: It has a low (acidic) pH
The primary reason we refrigerate food is to
Answer: Slow bacterial growth
Some bacteria are metabolically active in hot springs because....
Answer: Their enzymes have high optimal temperatures.
True or False: Bacteria are subject to natural selection, which results in them being well-adapted to their particular environment.
Answer: True
