Which statements about acid precipitation are accurate? Check all that apply.  

_____  Acid rain is intermediate between point-source and diffuse pollution.
_____  Mercury is a pollutant that often accompanies acid precipitation.
_____  Acid precipitation is a severe problem in areas with soils having high buffering capacity.
_____  Acid precipitation can affect aquatic ecosystems.
_____  Acid precipitation can affect forests, weakening the trees and making them more susceptible to disease.


__X__  Acid rain is intermediate between point-source and diffuse pollution.
__X__  Mercury is a pollutant that often accompanies acid precipitation.
_____  Acid precipitation is a severe problem in areas with soils having high buffering capacity.
__X__  Acid precipitation can affect aquatic ecosystems.
__X__  Acid precipitation can affect forests, weakening the trees and making them more susceptible to disease.

Biology & Microbiology

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You come across an article on alien nucleic acid structure. The article states that researchers have discovered a new single-ring nucleotide. Based on your knowledge of nucleic acids here on Earth, which of the following characteristics might apply to this new nucleotide? Select all that apply.A) The new nucleotide is probably a purine.B) The new nucleotide is probably a pyramidine.C) The new nucleotide may be similar to cytosine.D) The new nucleotide may be similar to guanine.E) The new nucleotide may be similar to uracil.

What will be an ideal response?

Biology & Microbiology

In bacteria, it is common to produce polycistronic messages; in eukaryotes it is less common. Describe how polycistronic mRNAs are made and processed in prokaryotes and eukaryotes. How might polycistronic mRNA molecules be an advantage for eukaryotes?

What will be an ideal response?

Biology & Microbiology

The cell maintains a ratio of ATP to ADP that is at the equilibrium point

__________________ Indicate whether the statement is true or false.

Biology & Microbiology

In the late 1970s Woese argued that there are two fundamentally different groups of prokaryotes by demonstrating:a

different DNA sequences in prokaryotes. b. some prokaryotes carry on photosynthesis. c. the difference in the appearance of the nuclei. d. gene codes of ribosomal RNA of different bacteria. e. some prokaryotes produce methane while others do not.

Biology & Microbiology