What is a thermocycler?
a. The process of cycling through the different temperatures of a PCR reaction 30 times
b. The name for the DNA primers used in a PCR reaction
c. The machine that controls the heat of the reaction, cycling between the different temperatures of the different steps during PCR
d. The special DNA polymerase, used in a PCR reaction, that can tolerate the high temperatures
Answer: c. The machine that controls the heat of the reaction, cycling between the different temperatures of the different steps during PCR
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When atmospheric carbon dioxide concentrations decrease, the ________ cycle gives C4 plants an advantage over C3 when it comes to fixation.
Fill in the blank(s) with the appropriate word(s).
The change from negative serum, without antibodies specific to an infecting agent, to positive serum, containing antibodies against that infecting agent, is called
A. ELISA. B. complement fixation. C. seroconversion. D. serum reversion.
Primary succession takes much longer than secondary succession because it involves
A. more time for development of a seed bank. B. colonization by more K-selected species. C. colonization by organisms that are farther away. D. time for development of the soil. E. redevelopment of the atmospheric gases.
The nervous system integrates with the endocrine system to control hormone secretion.
Answer the following statement true (T) or false (F)