The phase of the bacterial growth curve during which microbial growth slows and the rate of multiplication equals the rate of cell death is the
A. log phase.
B. telophase.
C. lag phase.
D. stationary phase.
E. death phase.
Answer: D
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How did Bayliss and Starling demonstrate that the small intestine secretes chemical signals that stimulate the pancreas to respond to acid?
B. They exposed a dog's small intestine to a cell extract made from a second dog's small intestine that had been exposed to acid. C. They cut out a piece of the small intestine and exposed it to acid. D. They injected pancreatic secretions from a dog previously exposed to acid into the small intestine of a second dog. E. They injected acid into the pancreas after removing all of its innervation.
During the elongation stage of transcription ____
a. DNA nucleotides are added to the transcript b. the transcript grows in the 5'®3' direction c. transcription factors recruit RNA polymerase to the template strand
d. the double helix remains single-stranded after being used as a template e. RNA polymerase binds to the promoter region
Compare and contrast the light microscope with the electron microscope
What will be an ideal response?
Respiratory syncytial virus and Rotavirus are major causes of global outbreaks in infants 6 months of age, or younger.
Answer the following statement true (T) or false (F)