A single-ring nitrogenous base found in DNA and RNA
What will be an ideal response?
Uracil (U)
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What ecological roles do seagrasses play? a. Humans use the stems of seagrasses for various purposes
b. They contribute 10% of oceanic primary production. c. They resuspend sediments into the water column. d. They stabilize sediments.
The movement of molecules from an area of high concentration to an area of lower concentration is called ________.
A. osmosis B. active transport C. diffusion D. facilitated diffusion E. endocytosis
Biologists use a classification system to group organisms in part because organisms
a. are going extinct b. are very numerous and diverse c. are too much alike d. share too many derived characteristics
If all of the lysosomes within a cell suddenly ruptured and released their contents, what could occur?
A) The mitochondria and chloroplasts would begin to divide. B) There would be no change in the normal function of the cell. C) The biological molecules in the cell would begin to degrade. D) The DNA within the mitochondria would begin to degrade. E) The number of proteins in the cell would begin to increase.