Symbiosis is an interaction between two species that is beneficial to both species
Indicate whether the statement is true or false
FALSE
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C. gel electrophoresis A small amount of DNA is collected from a crime scene. However, the amount of DNA collected is insufficient to perform the necessary experiments to link a suspect to the crime. What method could be utilized to increase the amount of DNA?
A. Southern blotting B. gel electrophoresis C. polymerase chain reaction (PCR) D. colony hybridization E. DNA sequencing
Evidence for the evolution of antibiotic resistance in bacteria has been evaluated ________
A) in populations of bacteria within individual patients B) in studies comparing newly diagnosed patients v. patients who have relapsed after antibiotic treatment C) in studies comparing the fraction of patients with resistant bacteria and society-wide use of antibiotics D) in all of the above examples E) in no empirical studies; there is no evidence that antibiotics act as a selective agent
In sponges, spicules are secreted by amoeboid cells
____________________ Indicate whether the statement is true or false.
Among the protist groups below, which has organisms that typically move with two or more flagella?
a. actinopods b. amoebozoa c. diplomonads d. foraminifera e. apicomplexans