Which of the following occurs fourth in the eutrophication process?
a. Bacteria use oxygen to decompose plant material.
b. Prolific plant and algal growth occurs.
c. Nutrients enter the body of water.
d. A drop in oxygen occurs that may cause a fish kill.
e. Plants and algae die during winter months.
A
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Fatty acids and ribozymes are incompatible as early molecules of life because ____
a. they have different pH requirements b. they most likely developed millions of years apart c. fatty acid vesicles are impermeable to ribozymes bound to ferrous oxide d. magnesium is required for ribozyme function but causes fatty acids to precipitate e. magnesium is required for fatty acids to form vesicles but causes ribozymes to precipitate
By definition, for osmosis to occur, the membrane separating two compartments must be permeable to the dissolved solute
a. True b. False
Most bacteria damage the body by infecting cells, multiplying within cells, and killing cells.
Answer the following statement true (T) or false (F)
Increases and decreases of the heart rate result from changes in the activity of the _____
A) medulla oblongata B) thalamus C) pituitary D) cerebellum