Biology, 19.08.2019 16:30 abrito1559
10. in a series of experiments, griffith infected mice with nonvirulent r-strain bacteria and highly virulent s-strain bacteria. heat-killed s
bacteria were nonvirulent. however, the nonvirulent heat-killed s bacteria and the nonvirulent r bacteria together produced a virulent
mixture. what did this demonstrate?
a. the s-strain bacteria had not been killed completely
b. the molecules present on the outside of bacteria determine whether it's virulent or nonvirulent
c. a transforming principle in the fly bacteria allowed the nonvirulent r strain to become virulent
d. the translation of proteins, carbohydrates, lipids, and dna is important in determining bacterial virulence.
Answers: 3
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Which statement describes an endocrine function rather than an exocrine function? a. salivary glands release saliva into the mouth. b. sweat glands release sweat onto the skin c. the pineal gland releases melatonin into the blood. d. esophageal glands release mucus into the esophagus.
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In what part of the body does the most muscle activity happen?
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According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes
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Biology, 22.06.2019 20:00
Which fossil organism in whale evolution do you think was the first to live mostly in water? explain your claim with evidence and reasoning?
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10. in a series of experiments, griffith infected mice with nonvirulent r-strain bacteria and highly...
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