Which of the following is an example of pasteurization?
A. A public toilet is treated with disinfectants.
B. A surgeon washes her hands before surgery.
C. Heat is used to kill potential pathogens in apple juice.
D. An autoclave is used to prepare nutrient agar.
E. A nurse prepares an injection site with an alcohol swab.
Answer: C
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You are at a stage in your research in which you must design an experiment to test your hypothesis
What factors must you include to insure that your experimental data is good valid data?
What will be an ideal response?Each of the following characteristics is true for both facilitated diffusion and active transport EXCEPT
____.
a. the use of transport proteins is required b. transport proteins are specific for the molecules being transported c. transport proteins can become saturated d. a concentration gradient is present e. the direction of transport is always with the concentration gradient
What is the tendency for molecules to stick together?
a. Cohesion b. Hydrophobic c. Hydrophilic d. Evaporation e. None of these choices.
A type of Archaea, known as ________, use hydrogen gas to reduce carbon dioxide to methane.
Fill in the blank(s) with the appropriate word(s).