Just need to answer these last two questions in order to finish my lesson one test. Please help
37. Both animals and plant cells undergo cytokinesis after mitosis ends. How is the process and its outcome the same for both animals and plant cells? How is the process and its outcome different for animal and plant cells?
Thanks a lot
-MC
MC -- A test is designed to find out what YOU know. If we give you hints or (heaven forbid) tell you the answer, then we've defeated the purpose of this class and this test.
Also, if you're having trouble with the Lesson One test, you're going to have even more trouble with the rest of the course. I strongly urge you to go back and seriously study this lesson's text.
I understand what you're saying Ms.Sue. Thanks
-MC
You're welcome.
To answer this question, let's first understand what cytokinesis is. Cytokinesis is the final stage of the cell division process where the cytoplasm is divided and two daughter cells are formed. In animals, cytokinesis typically occurs through a process called cleavage, while in plants, it occurs through cell plate formation. Now we can discuss the similarities and differences:
Similarities:
1. Outcome: In both animal and plant cells, the ultimate outcome of cytokinesis is the formation of two daughter cells.
2. Follows mitosis: Cytokinesis occurs after mitosis, regardless of whether it's in animal or plant cells.
Differences:
1. Process: Animal cells undergo cytokinesis by forming a cleavage furrow. The cleavage furrow is a contractile ring consisting of actin and myosin filaments that progressively contracts to pinch the parent cell into two daughter cells. In contrast, plant cells form a cell plate during cytokinesis. The cell plate is a structure made up of vesicles containing cell wall materials that fuse together, gradually expanding outwards and dividing the cytoplasm.
2. Cell wall formation: Since plant cells have cell walls, the cell plate formed during cytokinesis in plants will eventually develop into a new cell wall between the two daughter cells. In animals, which lack cell walls, a new cell membrane is formed through the contraction of the cleavage furrow.
To summarize, the process and outcome of cytokinesis are similar in both animals and plant cells as they result in the formation of two daughter cells. However, the mechanisms by which it occurs differ, with animals using cleavage furrow formation and plant cells using cell plate formation.