Moist heat sterilization at 100°C kills all of the following EXCEPT ________.
A. viruses
B. protists
C. bacterial endospores
D. fungal spores
Answer: C
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In agriculture, the use of GMOs is regulated by
a. the FDA b. the AHA c. Greenpeace d. the USDA e. the NIH
What is the correct sequence of structures through which air passes through on the way into the mammalian lung?
A. larynx ? pharynx ? trachea ? bronchi ? bronchioles ? alveoli B. alveoli ? bronchioles ? bronchi ? trachea ? larynx ? pharynx C. pharynx ? larynx ? trachea ? bronchi ? bronchioles ? alveoli D. pharynx ? trachea ? larynx ? bronchi ? bronchioles ?alveoli E. bronchi ? bronchioles ? pharynx ? larynx ? trachea ? alveoli
The formulation Ca++Cl-2, indicates
A. covalent bonding between one calcium atom and two chlorine atoms. B. one calcium ion that has gained two electrons and formed ionic bonds with two chloride ions that have each lost one electron. C. one calcium atom with two protons and two chlorine atoms that share one electron. D. one calcium ion that has lost two electrons and formed ionic bonds with two chloride ions that have each gained one electron.
How do antacid tablets work to relieve indigestion and/or a sour stomach?
a. They decrease the pH of the stomach to lessen the acidity. b. "They increase the pH of the stomach to lessen the acidity." c. They increase the acidity to help break down food matter in the stomach. d. "They maintain the current pH of the stomach."