Explain what occurs during endocytosis.
What will be an ideal response?
During endocytosis a portion of the plasma membrane invaginates and forms a pouch in order to envelop a substance and fluid. As the membrane folds inward it will eventually pinch itself together, forming a vesicle containing the substance or fluid inside of the cell.
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Which level of regulation directly determines the rate at which proteins are made?
a. transcriptional regulation b. posttranscriptional regulation c. translational regulation d. posttranslational regulation e. chromatin remodeling regulation
Which of the following occurs immediately after a haploid spore germinates?
a. A gametophyte is created by mitosis. b. A gametophyte is created by meiosis. c. A sporophyte is created by mitosis. d. A sporophyte is created by meiosis.
Explain why only 5 to 30% of the energy contained in a particular trophic level may be passed to the next trophic level
What will be an ideal response?
The plant response in which stems grow upward and roots grow downward is called
A. photoperiodism. B. thigmotropism. C. phototropism. D. gravitropism.