There are several proposed mechanisms that could have produced organic monomers. What mechanism involves the formation of organic compounds in interstellar clouds?
a. hydrothermic vents
b. organic compounds arriving on earth via meteorites
c. reactions involving hot water and metal ions from rocks
d. lightening fueled-atmospheric reactions
e. the aggregation of dust and rock bits that were orbiting the sun to form earth
b
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In which of the following environments would you expect to find a high number of iron-reducing bacteria?
A) acidic mine drainage B) deep subsurface C) open ocean D) agriculture soil
A diffuse species interaction infers the effects of
A) predation by one species on another is strong. B) competition by one species on another is strong. C) competition by one species on another is weak. D) predation is stronger than those of competition.
What are the results of nondisjunction, and why are these chromosome alterations so detrimental to an individual?
What will be an ideal response?
What is biology?
A) the scientific study of life B) the scientific study of the environment C) the scientific study of DNA D) the scientific study of ecosystems