What is the difference in prokaryotic vs. eukaryotic mRNA?
a) Prokaryotic mRNA is spliced
b) Prokaryotic mRNA has a 5' cap
c) Eukaryotic mRNA has a 3'poly A tail
d) Eukaryotic mRNA is polycistronic
Answer: c) Eukaryotic mRNA has a 3'poly A tail
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Antigens are _____
A) proteins found in the blood that cause foreign blood cells to clump B) proteins embedded in B cell membranes C) proteins that consist of two light and two heavy polypeptide chains D) foreign molecules that trigger an immune response E) proteins released during an inflammatory response
The first community to occupy a recently denuded region is referred to as
a. climax. b. diversity. c. pioneer. d. mosaic climax. e. transition.
Which disorder is classified a COPD?
a. emphysema b. asthma c. lung cancer d. high blood pressure e. apnea
Which of the following is not a benefit of our normal microbiota?
A) competes for space with pathogens B) neutralizes harmful wastes that pathogens produce C) makes substances that may directly damage pathogens D) competes for nutrients with pathogens E) generates an environment that limits pathogen survival