Actinorrhizae can benefit the plant by providing it with the products of ________.
A. denitrification
B. nitrogen fixation
C. nitrification
D. sulfate reduction
Answer: B
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Which of the following can function in signal transduction in plants?
I) calcium ions II) nonrandom mutations III) receptor proteins IV) autochrome V) secondary messengers A) only I, III, and IV B) only I, II, and V C) only I, III, and V D) only II and IV E) only II, III, and V
The integration site for sensory and motor information in humans is the
A. cerebellum. B. thalamus. C. basal nuclei. D. hippocampus. E. cerebral cortex.
Stanford University published one of the first whole genome studies of a healthy human, including disease risks. What was the result of the sequencing event?
a. It predicted his propensity to acquire various diseases. b. It predicted his life span. c. It predicted his probability of developing addictive habits. d. It predicted whether he could have children or not.
For circulating antibodies to reach the foreign cells in connective tissue, as an example in a puncture wound, what must happen?
a. Histamines must cause capillary permeability to decrease. b. Histones must cause interferons to be produced. c. Interferons must activate b cells. d. Antihistamines must deactivate goblet cells. e. Histamines must increase capillary permeability.