Your house plant is growing slowly and lacks its normal bright green color, so you call a botanist for advice. She suggests that the plant may be deficient in magnesium (Mg2+). Why are these symptoms associated with Mg2+ deficiency?
A) Mg2+ is important in the structure of many amino acids.
B) Lack of Mg2+ in the soil allows pathogenic bacteria to grow.
C) Mg2+ is a cofactor for NADPH function.
D) Mg2+ is an important component in chlorophyll.
E) Cytochromes require Mg2+ to function properly.
Answer: D
You might also like to view...
The alarm rings again; you hit the snooze button, but it is broken; you try to ignore the ringing, but that
sound is activating which of the following brain regions or functional groups of neurons?
a. limbic system b. reticular formation c. blood brain activator d. resonance tomography system e. hippocampus
Most members of the subphylum ______ are carnivorous and have an open circulatory system in which blood is pumped into the hemocoel by a dorsal heart.
a. Chelicerata b. Hexapoda c. Myriapoda d. Crustacea
If a solution has a pH of 2, how does its H+ ion concentration compare to a solution with a pH of 4?
A) It is 2 times higher. B) It is 10 times higher. C) It is 100 times higher. D) It is 1000 times higher.
Controversy has arisen about using genetically engineered bovine growth hormone to increase milk yield in cattle. The lesson gained from this controversy is that
A) recombinant DNA technology is inherently a bad idea and should be abandoned. B) humans are not wise enough to use this technique properly. C) the whole human society should decide the proper uses of recombinant DNA technology. D) society should let scientists decide the proper uses of recombinant DNA technology. E) citizens should not be allowed to decide such issues, as they tend to make decisions based on emotion.