The (Actinobacteria/alphaproteobacteria/Archaea) do not include any known pathogens.
Fill in the blank(s) with the appropriate word(s).
Archaea
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Modification enzymes typically methylate specific bases within the recognition sequence to prevent digestion of the nucleotide sequence by restriction endonucleases
Indicate whether the statement is true or false.
The simplest nervous system found in nature is the nerve net. An example of an organism that senses and responds to its environment with this ancient system would be
A. a jellyfish. B. a cockroach. C. an earthworm. D. a frog. E. a fiddler crab.
Which type of junctions prevent fluid leakage between cells?
a. gap junctions b. plasmodesmata c. tight junctions d. adhering junctions e. blocking proteins
How many molecules of CO2 are needed to generate one molecule of glucose?
A. 2 B. 3 C. 4 D. 5 E. 6