What percentage of the population are children 4 year old and younger in West Africa?
A. 8.5
B. 12
C. 17
D. 23
E. 50
C. 17
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Which of the following statements would be most INCORRECT if there were a sudden decline in plants on Earth?
A. Oxygen levels in the environment might decline. B. The rate of photosynthesis in existing plants would decline. C. There would be less organic matter on Earth. D. A decline in the population of herbivores would likely occur. E. Heterotrophic organisms would be significantly impacted.
The etiologic agent of which of the following bacterial diseases cannot be grown on artificial culture medium?
A) gonorrhea B) leprosy C) plague D) salmonellosis
Where do transcription and translation take place within the cell? What post-transcriptional modification aids in the movement of mRNA to the site of translation?
What will be an ideal response?
Suppose a neuron was at rest around -65 mV when it was exposed to a neurotransmitter that caused the neuron to hyperpolarize. Which of the following could be the effect of the neurotransmitter?
What will be an ideal response?