Cell Cycle
Cell Cycle
Cell division is an essential process in all living organisms. The mode of cell division is fundamentally similar in all organisms, During the process of division a cell, the processes like DNA replication and cell growth must take place in a sequential and coordinated manner to ensure the correct division and formation of progeny cells with intact genomes.
Cell cycle is an orderly sequence of events or a set of stages by which a cell duplicates its genome, synthesize the other constituents (important for the cell) of the cell and eventually divides into two daughter cells.
In terms of cytoplasmic increase, cell growth is a continuous process, DNA synthesis occurs during a specific stage of the cell cycle only. The DNA (chromosomes) are further distributed to daughter nuclei by a series of events. All these events are well-coordinated and are under genetic control.
Phases of Cell Cycle :
A typical eukaryotic cell (human cell) divides once in every 24 hr. This duration of cell cycle can vary from an organism to other organism and also from one cell type to another. e.g., yeast cell progresses through the cell cycle and divides in only about 90 min.
i) Interphase: It is the period between the end of one cell division to the beginning of the next cell division, i.e., (between two successive M-phase).
During this phase, cell prepares itself for both cell growth and DNA replication in an orderly manner. So, it is also known as preparation phase. It lasts for about 90-96%, i.e., more than 95% of the total duration of cell cycle. In a cell cycle of human cell, only about one hour is taken by the dividing phase out of 24 hours duration of one cell cycle.
Interphase is further divided into following three sub stages on the basis of various synthetic activities.
(a) (Gap - 1) - Phase (b)
(Synthesis) - phase
(c) (Gap - 2) - Phase
- phase (Quiescent Stage)
ii) M - Phase : - Following the interphase, the cell enters the M - Phase or mitotic phase.
MITOSIS : - In this type of division, the chromosomes replicate themselves and get equally distributed into daughter nuclei, i.e., the chromosome number in the parental and progeny cell (diploid) becomes the same. Therefore, it is also known as equational division.
Mitosis is also known as somatic cell division because it always occur in somatic cells. Mitotic cell division is seen in the diploid somatic cells in animals, whereas, in plants, mitotic division is seen in both haploid and diploid cells. It is known to be the phase of actual cell division, which starts with the division of nucleus, followed by the separation of daughter chromosomes, i.e., karyokinesis and terminates with the cytoplasmic division, i.e., cytokinesis.
Students / Parents Reviews [20]
Third consective year,my ward is in Abhyas with nice experience of admin and transport support.Educational standard of the institute recumbent at satisfactory level. One thing would live to bring in notice that last year study books was distributed after half of the session was over,though study ...
Ayan Ghosh
8thAbhyas institute is one of the best coaching institute in the vicinity of Ambala cantt.The institute provides good and quality education to the students.The teachers are well experienced and are very helpful in solving the problems. The major advantages of the institute is extra classes for weak...
Shreya Shrivastava
8thMy experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
Shivam Rana
7thMy experience with Abhyas academy is very nice or it can be said wonderful. I have been studying here from seven class. I have been completing my journey of three years. I am tinking that I should join Abhyas Academy in tenth class as I am seeing much improvement in Maths and English
Hridey Preet
9thIt has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
Barkha Arora
10thWhen I have not joined Abhyas Academy, my skills of solving maths problems were not clear. But, after joining it, my skills have been developed and my concepts of science and SST are very well. I also came to know about other subjects such as vedic maths and reasoning.
Sharandeep Singh
7thWe started with lot of hope that Abhyas will help in better understnding of complex topics of highers classes. we are not disappointed with the progress our child has made after attending Abhyas. Though need to mention that we expected a lot more. On a scale of 1-10, we would give may be 7.
Manya
8thBeing a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
Prisha Gupta
8thIn terms of methodology I want to say that institute provides expert guidence and results oriented monitering supplements by requsite study material along with regular tests which help the students to improve their education skills.The techniques of providing education helps the students to asses...
Aman Kumar Shrivastava
10thAbhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
Om Umang
10thIt was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
Cheshta
10thAbhyas is good institution and a innovative institute also. It is a good platform of beginners.Due to Abhyas,he has got knoweledge about reasoning and confidence.My son has improved his vocabulary because of Abhyas.Teacher have very friendly atmosphere also.
Manish Kumar
10thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
10thMy experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
Hiya Gupta
8thMy experience with Abhyas Academy has been very good. When I was not in Abhyas whenever teacher ask questions I could not speak it confidently but when I came in Abhyas, my speaking skills developed and now I am the first one to give the answer of teachers question.
Upmanyu Sharma
7thOne of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Aman Kumar Shrivastava
10thUsually we see institutes offering objective based learning which usually causes a lag behind in subjective examinations which is the pattern followed by schools. I think it is really a work of planning to make us students grab the advantages of modes of examination, Objective Subjective and Onli...
Anika Saxena
8thThe experience was nice. I studied here for three years and saw a tremendous change in myself. I started liking subjects like English and SST which earlier I ran from. Extra knowledge gave me confidence to overcome competitive exams. One of the best institutes for secondary education.
Aman Kumar Shrivastava
10thA marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
Archit Segal
7thIt was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
