Building blocks of life

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The Building Blocks of Life Worksheet

Part 1: Mitosis and Meiosis Short-Answer Response
Why are the process of mitosis and meiosis both important to a living organism? The process of mitosis and meiosis are both important to a living organism because without them a cell would not be able to reproduce. Mitosis is an asexual process used to replace old and dead cells with new ones by dividing into two identical daughter cells. Meiosis, however, is the step that makes sexual reproduction possible by taking a cell (diploid) and splitting it into two daughter cells (haploid) containing only half of the homologous pair. When would an organism need to undergo the process of mitosis? Meiosis? Mitosis is the process a cell goes through in order to replace damaged or dead cells with new cells; these cells would be identical to each other as well as the parent cell. Therefore, an organism would need to undergo mitosis during its growth and development and when it needs to repair a wound or injury. Meiosis is the process a cell goes through in which it divides each cell by exactly one-half of the parent cell. An organism would undergo this process before reproducing in order to prepare for fertilization. What would happen if meiosis did not occur?

If meiosis did not occur reproduction would not be possible. During this process a cell gets divided into one-half of the parent cell, which means that the cell contains one-half the DNA that an organism needs. Without this process the other half would not have anything to combine with to complete the DNA required to create a new cell. This would mean that reproduction of a new cell would not occur and the whole process would not be possible.

Part 2: Photosynthesis and Cellular Respiration Matrix

Complete the matrix. Use the following questions to aid in completion:

What is the purpose of this pathway?
Reactants: What does this reaction need to proceed?
Products: What is produced because of the...
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