Which of the following are in order from
primary producer to 4th trophic level?
a. grass: coyote: bird: grasshopper
b. coyote: bird: grasshopper: grass
c. bird: grasshopper: grass: coyote
d. grass: grasshopper: bird: coyote
e. none of these
D
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True or false: Using bacteriophage to fight a bacterial infection in humans would be unwise because the bacteriophage will also infect the human cells
A. true B. false
The term that refers to the purposeful addition of microorganisms into a laboratory nutrient medium is ________.
A. immunization B. isolation C. contamination D. infection E. inoculation
Fishes that reproduce in fresh water and migrate out to sea as adults are considered:
a. catadromous. b. anadromous. c. polyandrous. d. polygynous. e. demersal.
Which of the following is bacteriostatic?
A. heating in an oven at 171°C for an hour B. freezing below 0°C C. filtration D. autoclaving E. flash pasteurization