Whereas gram-negative bacteria such as the Proteobacteria often use ________ as autoinducers, quorum-sensing gram-positives more commonly use ________ that act as autoinducers
a. acyl homoserine lactones / short peptides
b. acyl homoserine lactones / quinones
c. short peptides / acyl homoserine lactones
d. quinones / acyl homoserine lactones
Answer: A
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Extracellular molecules activating membrane proteins that in turn activate molecules inside the cell that control differentiation is an example of signal ____
Fill in the blank with the appropriate word.
Which term refers to a form of energy that activates receptor endings of sensory neurons?
a. threshold b. sensation c. transduction d. stimulus e. action potential
How is tuberculosis transmitted?
A) by sexual contact B) by contaminated food C) by sneezes D) by infected blood products
Darwin observed that species found on ocean islands do not resemble species on islands with similar environment in
other parts of the world. __________________ Indicate whether the statement is true or false.