Is the greenhouse effect "bad?" Explaining your reasoning
What will be an ideal response?
No, the greenhouse effect warms the earth's lower atmosphere. Sunlight heats Earth's surface, then carbon dioxide and other "greenhouse gases" absorb some heat radiating from the surface and reradiate it toward Earth. Without the greenhouse effect, heat from Earth's surface would escape into space, leaving the planet cold and lifeless.
However the rise in greenhouse gases is causing global climate change, so greenhouse gases are detrimental when present at high levels.
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Protists and bacteria are grouped into different domains because _____
A) protists eat bacteria B) bacteria are not made of cells C) protists have a membrane-bounded nucleus, which bacterial cells lack D) bacteria decompose protists E) protists are photosynthetic
What type of antiviral drugs are designed to prevent viruses from inserting their DNA into the host’s genome?
a. fusion inhibitors b. reverse transcriptase inhibitors c. integrase inhibitors d. protease inhibitors
Once glucose has entered a cell, what prevents
it from diffusing back out of the cell?
a. glucose pumps actively pump it back b. one side of the cell membrane is permeable to glucose, but the other side is not c. glucose inhibitors attach to glucose once it’s in the cell d. glucose is phosphorylated preventing it from leaving the cell e. glucose is hydrolyzed into two three-carbon molecules that cannot diffuse in a reverse direction
In eukaryotes many genes may be affected by a steroid hormone because they are clustered in operons
1.True 2.False