In what way do nitrogen compounds differ from other minerals needed by plants? Only nitrogen _____
A) can be lost from the soil
B) can be provided by symbiotic bacteria
C) is needed for protein synthesis
D) is held by cation exchange capacity in the soil
E) can be absorbed by root hairs
Answer: B
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An autosomally recessive metabolic disorder in the phenylalanine pathway that was first investigated by Garrod at the beginning of the twentieth century is ____________________
Fill in the blank(s) with correct word
The process whereby repeated, short stimuli provided to a hippocampal neuron have the effect of strengthening the synapse it makes with other neurons is specifically referred to as
A. long-term potentiation. B. short-term potentiation. C. neurotransmission. D. synaptic reuptake. E. None of these choices are correct.
Water-storing plants and deeply rooted shrubs are plants that characterize ________
A) tropical forests B) chaparral C) deserts D) savanna
How often must the competency of laboratory staff be evaluated
A. After 6 months of employment and annually thereafter B. Anually C. Every three months for the 1st year and anually thereafter D. in the first three months after hire