Tetracycline antibiotics are frequently included in commercial poultry feed. Why is the practice unwise for human health in the long run?
What will be an ideal response?
This use of an antibiotic hastens the day when potentially devastating pathogenic bacteria evolve natural resistance to the antibiotic.
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A series of enzymatic steps that fixes carbon dioxide into carbohydrate is called the ________.
A. Pentose phosphate pathway B. Entner-Doudoroff pathway C. Calvin-Benson cycle D. Embden-Meyerhoff pathway
What type of cladogenesis can occur through the founder effect?
A. Parapatric speciation B. Allopatric speciation C. Sympatric speciation
A product of photosynthesis, ________ is a carbon-based molecule that is the chief source of energy for most organisms.
A. oxygen B. glucose C. sucrose D. All of the answer choices are correct.
All of the following statements about cell suspension cultures are true EXCEPT
A. cell suspension cultures produce the same chemicals the entire plant produces. B. large numbers of plants are grown and collected from the natural environment to produce chemicals in the laboratory. C. chemicals are produced and extracted in high concentrations, sometimes from genetically modified cells. D. digitalis, digitoxin, and quinine are produced by cell suspension culture.