Ammonium chloride is a commonly used salt in minimal media. The reason ammonium chloride is
used is because:
a. it is an organic source of carbon.
b. it provides nitrogen.
c. it jellifies the media.
d. it liquefies the media.
e. it sterilizes the media.
B
You might also like to view...
Which of the following is not a function of membranes?
A) define cell boundaries B) compartmentalization C) information storage D) regulation of transport E) cell-cell communication
Which of the following statements about natural selection is true?
a. Natural selection causes variations to arise within a population. b. Natural selection leads to increased likelihood of survival for certain individuals based on variation. The variation must come from outside the population. c. All individuals within a population have an equal likelihood of survival. Survival is based on chance. d. Natural selection results in those individuals within a population who are best-adapted surviving and producing more offspring. e. Natural selection leads to extinction.
Answer the following statements true (T) or false (F)
1.A transfusion can provide passive immunity. 2.If an Rh- woman has two babies who are Rh+, her immune response to the second baby would be an example of a secondary immune response. 3.T cells direct humoral immunity while B cells govern cell-mediated immune reactions. 4.Lymph nodes have a crucial role in immunity. 5.Adaptive immune defenses provide a rapid, broad defense against any infectious agent.
Chemical energy:
A) is a form of potential energy stored in bonds between molecules. B) contains less energy than kinetic energy. C) is kinetic energy that has not been converted to heat. D) is best described as "the energy of motion." E) is stored energy that is unavailable to do work.