Name three possible fates for an endocytosed molecule that has reached the endosome
What will be an ideal response?
1. recycled to the original membrane
2. destroyed in the lysosome
3. transcytosed across the cell to a different membrane
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The function of a central cell is to
a. collect pollen for fertilization. b. develop into an egg. c. develop into a pollen grain. d. store food for the seed.
Scattering of peripheral light rays through the glass slide under very high magnification can be prevented by ________.
A. the condenser B. the ocular C. immersion oil D. the cover slip
Which of the following is characteristic of mosaic development?
a. The cells of the adult are very different from each other. b. The fate of adult cells is predetermined in embryonic founder cells. c. Adult cells are richly interspersed with proteins. d. Embryonic cells have a wide range of possible developmental patterns. e. Embryos have a wide range of morphologies, but all look identical as adults.
The "endosymbiont theory" states that eukaryotic cells work together to form a multicellular organism.
a. true b. false