Refer to Figure 36-2. Absorption of positively charged mineral ions by the root is facilitated by:
a. the movement of clay particles into the root hair.
b. the movement of water into the root hair.
c. the movement of protons into the root hair.
d. the movement of protons out of the root hair.
e. the movement of Mg+ out of the root hair.
D
You might also like to view...
The theory of continental movement is called ____
a. plate tectonics b. plate drift c. seismology d. fault line movement e. sea floor spreading
Typically, members of a cohort are tracked ____
a. until they become independent b. until their breeding age c. for a period of time and then released in the environment to serve their purpose in the community d. from birth to death e. as long as they are in good health and serve the purpose of a study
When we know what kinds of ____ are present in an organic compound, we can predict its chemical behavior
a. proteins b. enzymes c. triacylglycerols d. macomolecules e. functional groups
It is notoriously difficult to perform unbiased studies when human subjects are used. When governmental agencies such as the U.S. Food and Drug Administration (FDA) are trying to determine the validity of scientific claims, they very closely examine the
methods used in the experiments. What are the three phases of clinical trial, and which one(s) must a drug pass in order to be sold in U.S. markets? What will be an ideal response?