Why is the tuberculosis bacterium so hard to treat and destroy in the body?
What will be an ideal response?
The bacteria may lie dormant within connective tissue pockets for years. The immune system cannot always kill the germs in these pockets; moreover, some antibiotic-resistant forms have appeared.
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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.
You genetically engineer an Arabidopsis plant to have a mutation in gene B. Which of the following phenotypes would you expect to see as a result of this mutation?
A. petals - petals - stamen - stamen B. sepals - petals - sepals - petals C. sepals - petals - stamens - carpel D. sepal - sepal - carpel - carpel E. carpels - carpels - stamen - stamen
The results of the treatment of 20 boys with SCID-X1 showed that ____
a. SCID-X1 can be cured through genetic engineering b. none of those treated were cured of the disease c. a bone marrow transplant can cure SCID-X1 d. our understanding of the human genome exceeds our ability to modify it e. the “treatment” caused numerous unforeseen complications.
Cellular respiration starts in the cytoplasm with the process of
1.glycogenolysis. 2.gluconeogenesis. 3.glycolysis. 4.the Krebs cycle. 5.none of the choices