Viruses are considered to be non-living pathogens for which reason?
A) their ability to synthesize only some of their own components
B) their extremely small size
C) their unique type of cells
D) their unique type of cells and their lack of metabolic processes
E) their lack of metabolic processes
Answer: E
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Polyploid plants are often unhealthy compared to diploid plants
a. True b. False
Atria differ from ventricles in that they
a. are larger. b. have thicker walls with more muscle. c. receive blood from veins. d. have a higher blood pressure. e. empty through semilunar valves.
The theory of island biogeography predicts that the extinction rate is greater on large islands than on small islands
Indicate whether the statement is true or false
Protobionts are vesicle-like assemblages of abiotically-produced organic polymers
______________ Indicate whether the statement is true or false.