unit 6 lesson 1 inquiry and research
1. Cells need to divide so that their species can carry on. Without reproduction, any particular species would die out because not one cell can last forever.
2. Single celled prokaryotes divide by binary fission. This is a process where a single parent cell splits into two daughter cells. Single celled Eukaryotes divide by mitosis. They are different because in mitosis, the chromosomes organize themselves neatly after being replicated. In binary fission, the chromosomes are in a jumbled mess. The chromosomes separate into two jumbled messes, opposed to the formation of the neatly separated chromosomes in mitosis. The two processes are similar, as the both end with cytokenesis. This is a step where the cell membrane divides and two separate cells are formed.
3. The first stage of mitosis is the interphase. This is when the chromosomes are replicated so that the new cells can have a complete set of chromosomes. The next stage is the prophase. This is the longest stage and is when the spindle of microtubules is created by the centrioles moving to the edges of the cell. The membrane begins to break down during this stage too. The next stage is the metaphase. This is where the spindle fibers are fully constructed and attach to the sister chromatids, making sure that there is an equal number of chromatids in each new cell. The anaphase is where the chromosomes divide and each half of the cell has a full set of chromosomes. During the telophase, the chromosomes break down into chromatin. The spindle breaks down and new nucleur membrane material is created. In cytokinesis, the cell fully separates into two separate ones.
4. In prophase one, the spindle begins to form, and nucleur materials begin to break down. This stage is unique, as it is when homologous chromosomes pair up. In metaphase 1, the paired chromosomes are attached to the spindle fibers (microtubules). In anaphase 1 the chromosomes start to separate and are pulled to separate sides of the cell. In telophase 1 and cytokenesis, the spindle falls apart and the nucleur membranes form while the cell membrane divides. In prophase 2 the nucleur membrane breaks down and the spindles start to form and the centrioles go the edges of the cell. In metaphase 2 the spindle fibers align and the sister chromatids sit in the center of the cell. In the anaphase 2 the chromatids move to opposite poles and in telophase 2 and cytokenesis the membranes divide and 4 haploid cells are the result after the spindle breaks down and the cellular membranes split.
5. The two processes are similar as they both create new cells. They are both reproductive processes found in eukaryotes. They are different in prophase one in mitosis versus prophase in meiosis as in the former the sister chromatids align along the equator of the cell and in the latter the similar chromosomes line up along the cell's equator. Mitosis only makes two cells, while meiosis makes four from a single parent cell. Mitosis makes cells with all the chromosomes, but meiosis makes cells that are haploids.
2. Single celled prokaryotes divide by binary fission. This is a process where a single parent cell splits into two daughter cells. Single celled Eukaryotes divide by mitosis. They are different because in mitosis, the chromosomes organize themselves neatly after being replicated. In binary fission, the chromosomes are in a jumbled mess. The chromosomes separate into two jumbled messes, opposed to the formation of the neatly separated chromosomes in mitosis. The two processes are similar, as the both end with cytokenesis. This is a step where the cell membrane divides and two separate cells are formed.
3. The first stage of mitosis is the interphase. This is when the chromosomes are replicated so that the new cells can have a complete set of chromosomes. The next stage is the prophase. This is the longest stage and is when the spindle of microtubules is created by the centrioles moving to the edges of the cell. The membrane begins to break down during this stage too. The next stage is the metaphase. This is where the spindle fibers are fully constructed and attach to the sister chromatids, making sure that there is an equal number of chromatids in each new cell. The anaphase is where the chromosomes divide and each half of the cell has a full set of chromosomes. During the telophase, the chromosomes break down into chromatin. The spindle breaks down and new nucleur membrane material is created. In cytokinesis, the cell fully separates into two separate ones.
4. In prophase one, the spindle begins to form, and nucleur materials begin to break down. This stage is unique, as it is when homologous chromosomes pair up. In metaphase 1, the paired chromosomes are attached to the spindle fibers (microtubules). In anaphase 1 the chromosomes start to separate and are pulled to separate sides of the cell. In telophase 1 and cytokenesis, the spindle falls apart and the nucleur membranes form while the cell membrane divides. In prophase 2 the nucleur membrane breaks down and the spindles start to form and the centrioles go the edges of the cell. In metaphase 2 the spindle fibers align and the sister chromatids sit in the center of the cell. In the anaphase 2 the chromatids move to opposite poles and in telophase 2 and cytokenesis the membranes divide and 4 haploid cells are the result after the spindle breaks down and the cellular membranes split.
5. The two processes are similar as they both create new cells. They are both reproductive processes found in eukaryotes. They are different in prophase one in mitosis versus prophase in meiosis as in the former the sister chromatids align along the equator of the cell and in the latter the similar chromosomes line up along the cell's equator. Mitosis only makes two cells, while meiosis makes four from a single parent cell. Mitosis makes cells with all the chromosomes, but meiosis makes cells that are haploids.