The complex of periplasmic flagella that mediates the movement of spirochetes is referred to as the ________.
A. axillary filament
B. periplasmic flagella
C. periplasmic flagella or axial filament
D. peritrichal axon
E. axial filament
Answer: C
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What evidence exists that suggests modern agriculture is unsustainable?
A) Fresh water is used for irrigating crops. B) Large amounts of nonrenewable fossil fuels are required. C) Fertilizers and pesticides are inexpensive and easy to obtain. D) More food is produced than can be used.
The correct sequence of the scientific method is
A) ask a question, observation, form a hypothesis, test a hypothesis, form a theory. B) form a hypothesis, ask a question, observation, test a hypothesis, form a theory. C) form a theory, ask a question, form a hypothesis, observation, test a hypothesis. D) observation, ask a question, form a hypothesis, test a hypothesis, form a theory.
Which of the following is NOT a treatment for a blocked coronary artery?
a. coronary bypass b. laser angioplasty c. balloon angioplasty d. molecular angioplasty e. stent
How can the preservation of biological diversity be justified?Check all that apply.
A. supernatural responsibility B. economic value C. exploitative value D. ethical grounds E. ecological value