Which of the following respiratory disorders might be cured in the future through the use of gene therapy?
A. asthma
B. emphysema
C. cystic fibrosis
D. lung cancer
E. pulmonary fibrosis
Answer: C
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During the inflammatory response, dilation of blood vessels is caused by
A. nitric oxide. B. histamine. C. cytokines. D. phagocytes. E. both histamine and complement.
Answer the following statements true (T) or false (F)
1. Molecular homologies indicate that living species evolved from a common ancestor or interrelated group of common ancestors. 2. Selective breeding results from programs designed to modify traits in domesticated species. 3. According to Thomas Malthus, food supplies tend to increase arithmetically while populations tend to increase exponentially, which means that populations will outgrow their food supply. 4. Neutral variation is supported by the observation that most changes in codons occur in the third position within the codon, which often has no effect on the sequence of amino acids in the protein.
The ____ stimulates forceful inhalation and exhalation
a. ventral interneuron group b. pons interneuron groups c. carotid bodies d. dorsal respiratory group e. aortic bodies
How has artificial selection been used to shape the characteristics of food producing plants?
What will be an ideal response?