Problemas
1. Why is the process of mitosis essentiat for multicellotar organisma? A. It helps in producing genetic variation. B. It allows for growth and repair of tissues. C. It removes damagec cells from the body. D. It occurs only during asexual reproduction. 2. During the sphese of Interphase, which of the following occurs? A. The cell grows and performs normal functions. B. Spindie fibers begin to form. C. DNA is replicated in preparation for cell division. D. Chromosomes align at the metaphase plate. 3. If spindle fibers do not attach property during metaphase, what is the most likely outcome? A. The cell will skip mitosis and return to interphase. B. Chromosomes may not separate eventy during anaphase. C. The cell will complete mitosis without any errors. D. Cytokinesis will occur before chromosomes align. 4. What is the primary function of chromosomes during mitosis? A. To produce energy for the cell. B. To store nutrients for cell growth. C. To ensure DNA is accurately distributed to daughter cells. D. To generate new spindlo fibers for division. 5. Why is it crucial for chromosomes to line up at the metaphase plate before the cell divides? A. It helps the nuclear envelope reform before cytokinesis. B. It ensures that each daughter cell will receive a complete set of chromosomes. C. It prevents the formation of new centromeres. D. It stops the cell from entering prophase too early. 6. What would most likely happen if the DNA replication step in the Sphase is skipped? A. The cell will proceed to mitosis but produce abnormal cells. B. The cell will grow larger than usual to compensate. C. Mitosis will not be initiated, and the cell will remain in G1. D. The spindle fibers will separate the chromatids more effectively. 7.What is the significance of chromatin condensing into visible chromosomes during prophase? A. It marks the end of DNA replication. B. It makes it easier for the cell to separate the DNA equally. C. It signals the start of cytokinesis. D. It helps the nuclear envelope disassemble. 8. How could disruptions in mitosis potentially lead to diseases like cancer? A. The cell may undergo uncontrolled division due to errors in spindle fiber formation. B. The cell may stop dividing entirely, leading to tissue damage. C. The chromosomes may remain uncondensed , preventing cell growth. D. The nuclear envelope may reform too early,halting the process of division.
Roztwór
Martín
experto · Tutor durante 3 años
4.6
(178 Votos)
Respuesta
1. B2. C3. B4. C5. B6. C7. B8. A
Explicación
## Step 1Mitosis is a process that allows for the growth and repair of tissues in multicellular organisms. This is because mitosis results in two identical daughter cells, each with the same number and kind of chromosomes as the parent nucleus. This process is essential for the growth of an organism and the replacement of worn-out cells.## Step 2During the S phase of interphase, DNA is replicated in preparation for cell division. This is a crucial step because it ensures that each new cell will have a complete set of DNA.## Step 3If spindle fibers do not attach properly during metaphase, the chromosomes may not separate evenly during anaphase. This can lead to cells with too many or too few chromosomes, which can cause diseases like cancer.## Step 4The primary function of chromosomes during mitosis is to ensure that DNA is accurately distributed to daughter cells. This is crucial for maintaining the genetic integrity of the cells.## Step 5It is crucial for chromosomes to line up at the metaphase plate before the cell divides to ensure that each daughter cell will receive a complete set of chromosomes. This is essential for the proper functioning of the cells.## Step 6If the DNA replication step in the S phase is skipped, the cell will not be able to divide properly. This can lead to the cell remaining in the G1 phase, which is the first stage of the cell cycle.## Step 7The significance of chromatin condensing into visible chromosomes during prophase is that it makes it easier for the cell to separate the DNA equally. This is because the condensed chromosomes are easier to move and separate than the loose chromatin.## Step 8Disruptions in mitosis can potentially lead to diseases like cancer because the cell may undergo uncontrolled division due to errors in spindle fiber formation. This can result in cells with too many or too few chromosomes, which can cause diseases like cancer.