please help me with the following questions. Thank you. All of the following pro
ID: 262120 • Letter: P
Question
please help me with the following questions. Thank you.
All of the following processes EXCEPT which one use mitosis to create new cells? a. fetal growth 1. b. tissue healing c. sex cell production d. plant root growth The term for cell division in prokaryotic individuals is a. mitosis 2. b. meiosis c. cytokinesis d. binary fission In which stage is DNA replicated before cell division? a. S phase 3. b. G1 Phase c. G2 phase d. GO phase 4. Which of the following Cell Cycle stages is not technically one of the phases of Mitosis? s. Which term correctly describes the half number of usual chromosomes, as is seen in gametes? 5. Crossing over of portions of chromosomes occurs in what phase of cell division? a. interphase b. metaphase C. prophase d. telophase a. homologous pair b. diploid c. haploid d. somatic cell a. Metaphase of Mitosis b. Metaphase of Meiosis c. Interphase d. Cytokinesis 7. Which of the following is NOT one of the differences between mitosis and meiosis? a. Mitosis results in 2 identical daughter cells, while meiosis results in 4 unique daughter cells b. Mitosis results in haploid daughter cells, while meiosis results in diploid daughter cells C. Mitosis is performed by somatic (body) cells, while meiosis is performed by sex cells d. Mitosis involves 1 cycle of cell division, while meiosis involves 2 cycles of cell division Which of the following terms describes the failure of homologous chromosomes to se separate cells in meiosis, resulting in conditions such as Down Syndrome? a. nondisjunction 8. gregate to b. cloning c. karyotype d. crossing over 9. What is the term for organisms with multiple pairs of homologous chromosomes, instead of the usual number? a. karyotype b. nondisjunction C. crossover d. polyploidy 10. Cancer is best described as.... a. Uncontrolled cell growth b. Uncontrolled cell division c. Failure of chromosomes to separate properly in cell division d. Normal cell death due to DNA deteriorationExplanation / Answer
Q.1 – Option C.
Fetal growth, tissue healing and plant root growth requires mitosis for cell division. But for sex cell production meiosis is required. Reduction division takes place in meiosis.
Q.2 – Option D.
Mitosis is the term used for Somatic cell division in eukaryotes and meiosis is used for sex cell production. Cytokinesis is the last step of mitosis. But Binary fission takes place in prokaryotes only.
Q.3 – Option A.
DNA replication takes place in Synthesis phase (S Phase). Whereas cell divides in the Mitotic phase (M Phase). G1, G2, G0 are gap phase in cell cycle.
Q.4 – Option A.
Prophase, Metaphase, Anaphase and Telophase are the stages of Mitosis. Cells spend most of its time in Interphase stage but it is not the stages of mitosis in cell cycle.
Q.5 – Option C.
Somatic cell contain diploid number of chromosome 2n. Sex cell such as sperm contain haploid number of chromosome n.
Q.6 – Option B.
Crossing over takes place between the sister chromatids of homologous chromosome between prophase 1 and metaphase 1 of meiosis 1. Genetic diversity observed among the individuals is due to crossing over event which takes place during meiosis process only.
Q.7 – Option B.
Option B is not true. It is because Mitosis results in 2 identical diploid daughter cells, while meiosis results in 4 unique haploid daughter cells.
All the other option pertains to differences between mitosis and meiosis are true.
Q.8 – Option A.
The failure of homologous chromosomes to segregate to separate cells in meiosis is termed as nondisjunction.
Cloning is a technique used to make the identical copies of DNA using plasmid vector.
Karyotype is a term used to describe the number of chromosome which are observed visually in a cell.
Crossing over means exchange of genetic information among sister chromatids of homologous chromosome during meiosis.
Q.9 – Option D.
When a normal cell acquire addition sets of chromosome then it is termed as polyploid.
Q.10 - Option B.
Rapid proliferation or uncontrolled cell division is the hallmark of cancer. There is nothing to stop the uncontrolled cell division. All the regulatory mechanism are either mutated or non-functional as a result of which the cells divides rapidly without any control.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.