Which statement about ecosystems is false?
A) Bacteria and fungi recycle energy within an ecosystem.
B) Plants and other photosynthetic organisms are producers in ecosystems.
C) Chemical nutrients cycle within an ecosystem.
D) In the process of energy conversions within an ecosystem, some energy is converted to heat.
Answer: A
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The double helix model of DNA structure was proposed by
A. Watson and Crick. B. Griffith. C. Avery. D. Franklin. E. Chargaff.
Organ systems typically have just one major function
a. True, all organ systems are interdependent. b. True, each organ system can function independently. c. False, many organ systems have multiple functions. d. False, each organ system can function independently.
Both plants and animals can be manipulated to generate transgenic organisms, but the process is much easier with plants. Explain why it is more difficult to generate transgenic animals than plants
What will be an ideal response?
What structure within a capillary bed controls shunting of blood from the arteriole to the venule?
A. precapillary sphincter B. precapillary valve C. pericardium D. shunt valve E. endothelium