Describe Griffith's transformation experiment
What will be an ideal response?
Griffith infected mice with mixtures of Streptococcus pneumoniae. S cells killed mice, while R cells did not. Killed S cells were also harmless to mice. However, when killed S cells were added to living R cells; the combination killed mice, and living S cells could be isolated from the dead mice. Griffith postulated that something in the killed S cells transformed living R cells to S cells.
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provide one example of a surfactant commonly used in hospitals?
What will be an ideal response?
The part of the male reproductive system where sperm complete fertilization is the
A. epididymis. D. seminal vesicle. B. bulbourethral gland. E. ejaculatory duct. C. testis.
Amyloid plaques are routinely found in many brains but are much more common in the brains of
people who have ____________________. Fill in the blank(s) with the appropriate word(s).
Much of the work of breaking down the food we ingest is done by our
(a) stomach (b) teeth (c) gut microbiome (d) esophagus