Which of the following is true of trace minerals?
a. All trace minerals can function as co-factors for enzymes.
b. Their content in plant foods is strongly influenced by the mineral content of the soil where they are grown.
c. Their absorption does not change when body stores are low.
d. Toxicity is more likely with major minerals than with trace minerals.
Ans: b. Their content in plant foods is strongly influenced by the mineral content of the soil where they are grown.
You might also like to view...
Graph (b) in the figure above shows the normal fluctuations of a population of grouse. Assuming graph (a) in the figure above is the result of some experimental treatment in the grouse population, what can be concluded?
A) The experimental treatment exacerbated the population cycling. B) The experimental treatment did not affect population cycling in this species. C) The experimental treatment has most likely identified the cause of population cycling. D) None of the other responses is true.
Chromatin remodeling
a. is subject to well-characterized stages of regulation by the cell. b. blocks access to genes that should not be expressed in a particular cell. c. is unaffected by alterations to the DNA sequences of a cell. d. results in specific patterns of gene expression. e. is generally independent of histone protein arrangements.
To overcome the water/salt balance problem, fish have specialized cells that can either take in salts or excrete salts that are located in their
a. kidneys. b. lungs. c. gills. d. pharynx. e. skin.
Bacteriophages attach to the cell walls of bacteria by envelope proteins
____________________ Indicate whether the statement is true or false.