Transcriptional regulation in prokaryotes is rapidly turned on or off in response to environmental changes and involves both positive and negative regulators
A. true
B. false
A
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Which of the following is a phagocyte that acts to alert the adaptive immune system of the presence of antigen in solid
tissue?
a. macrophages b. monocytes c. neutrophils d. dendritic cells e. eosinophils
Which of the following statements concerning van der Waal interactions is FALSE:a
They are attractive forces. b. They are very strong. c. They involve transient regions of positive and negative charges. d. They form between nonpolar molecules. e. They operate over very short distances
An example of commercial harvest is the introduction of a foreign species into an area where it is not
native. ___________________ Indicate whether the statement is true or false.
All tapeworms are intestinal parasites that completely lack digestive systems
Indicate whether the statement is true or false