True or False: It is thought that some forms of communication have evolved from a behavioral process called ritualization
A. true
B. false
A
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Transformation involves contact between two bacterial cells, followed by the unidirectional transfer of plasmid genes
Indicate whether the statement is true or false.
Which of the following cells are alive at
maturity? a. sieve tube members b. vessel members c. tracheids d. vessel members and tracheids e. sieve tube members and vessel members
What are hyphae?
A) symbiotic associations between plant roots and fungi B) threadlike filaments that make up fungal bodies C) fungal digestive enzymes D) fungal spores
All of the following were produced in experiments on primitive Earth conditions conducted by Miller-Urey and others, except for
A. prokaryotes. B. amino acids. C. organic molecules. D. urea. E. hydrogen cyanide.