The bonding of two or more atoms creates a(n) ____
a. molecule
b. ion
c. isotope
d. mixture
e. solution
ANSWER: a
You might also like to view...
The trp operon is ____ unless tryptophan is ____
a. turned on; available in the environment b. turned on; bound to the operator c. turned off; bound to the repressor d. turned off; bound to the promoter e. turned on; synthesized by the trp repressor gene
Typically, members of a cohort are tracked
a. until they become independent. b. until their breeding age. c. for a period of time and then released in the environment to serve their purpose in the community. d. from birth to death. e. as long as they are in good health and serve the purpose of a study
When endocytosis brings organic matter into the cell, the process is called
a. simple diffusion. b. bulk flow. c. osmosis. d. phagocytosis. e. facilitated diffusion
The type of reproductive isolation in which the two populations are separated by the habitat each utilizes the
A. mechanical isolation. B. habitat isolation. C. hybrid inviability. D. behavioral isolation. E. temporal isolation.