Although extinction is a natural process, current extinctions are of concern to environmentalists because _____
A) more animals than ever before are going extinct
B) most current extinctions are caused by introduced species
C) the rate of extinction is higher than background extinction rates
D) current extinction is primarily affecting plant diversity
Answer: C
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Which of the following groups of biomes is listed in order of greatest to lowest evapotranspiration ratio?
A. rain forest, deciduous forest, desert B. desert, deciduous forest, rain forest C. deciduous forest, desert, rain forest D. desert, rain forest, deciduous forest E. deciduous forest, rain forest, desert
Describe two conditions that would make a DNA mutation result in an altered protein
What will be an ideal response?
Mutations can affect hormone receptors in the following ways, except for which statement?
A. Result in missing or defective receptors B. Alter the rate of production of receptors C. Affect the response to a hormone D. Decrease the level of hormones in their vicinity E. Alter the binding site of receptors
If you remove the ERretention signal from a protein that normally resides in the ER lumen, where do you predict the protein will ultimately end up? Explain your reasoning
What will be an ideal response?