Answer the following questions true (T) or false (F)
1. A direct ELISA is most useful for detection of antigens while an indirect ELISA is used to determine if a patient has a particular type of antibody in their blood.
2. Polymerase chain reaction (PCR) techniques can detect the presence as few as a single viral particle in a sample.
3. The CRISPR-Cas9 gene editing system so far can only be used to alter prokaryotic cells.
1. TRUE
2. TRUE
3. FALSE
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An evolutionary advantage of the endoskeleton is that it (choose all correct answer options):
A. allows growth of fairly large organisms. B. protects vital internal organs. C. provides a structure on which muscles can pull for an organism to move. D. makes the process of reproduction more efficient.
A rhizome is a horizontal aboveground stem. Indicate whether the statement is true or false
The salivating response to a bell is what Pavlov called a(n) unconditioned response. Indicate whether the statement is true or false
In what way is proteobacterial photosynthesis different from plant photosynthesis?
a. Proteobacterial photosynthesis does not use a proton gradient. b. Proteobacterial photosynthesis does not consume CO2. c. Proteobacterial photosynthesis uses water as an electron donor. d. Proteobacterial photosynthesis uses a different type of chlorophyll.