Biology
- The Cell Cycle
What are all of the stages to the Cell Cycle? The Cell Cycle starts with its first stage called Interphase. The cell will be in this stage the longest amount of time out of all of the stages of the cycle. During the first part of Interphase is called...
- #80 Question 3
(a) The diagrams show a cell in various stages ofthe mitotic cell cycle. Name the stage represented by each diagram, and arrange them in the correct sequence. (b) Describe the role of spindle microtubules in mitosis. (3 marks) (c) The graph below shows...
- #32 Summary Of Cell And Nuclear Division
1. Growth of a multicellular organism is a result of parent cells dividing to produce genetically identical daughter cells. 2. During cell division the nucleus divides first, followed by division of the whole cell. 3. Division of a nucleus to produce...
- #31 Control Of Cell Division, Stem Cell, Haploid And Diploid Cells
Each cell contains genes that help to control when it divides. Cells divide by mitosis only when required. When receives signals from neighbouring cells, it responds by dividing or not dividing. If this control goes wrong, cells may not divide when they...
- # 30 Mitosis
Mitosis is a nuclear division giving rise to genetically identical cells in which the chromosome number is maintained by the exact duplication of chromosome. Significance of mitosis production of geneticlly identical cells: It keeps the chromosome...
Biology
# 28.1 The mitotic cell cycle - Syllabus 2015
? Replication and division of nuclei and cells
? Understanding of chromosome behaviour in mitosis
Learning Outcomes
Candidates should be able to:
(a) explain the importance of mitosis in the production of genetically identical cells, growth, repair and asexual reproduction;
(b) outline the cell cycle, including growth, DNA replication, mitosis and cytokinesis;
(c) [PA] describe, with the aid of diagrams, the behaviour of chromosomes during the mitotic cell cycle and the associated behaviour of the nuclear envelope, cell membrane, centrioles and spindle (names of the main stages are expected);
(d) explain how uncontrolled cell division can result in the formation of a tumour and identify factors that can increase the chances of cancerous growth;
(e) explain the meanings of the terms haploid and diploid (see section 5) and the need for a reduction
division (meiosis) prior to fertilisation in sexual reproduction (note: descriptions of homologous
chromosomes are not required for AS Level);
(f) use the knowledge gained in this section in new situations or to solve related problems.
? Understanding of chromosome behaviour in mitosis
Learning Outcomes
Candidates should be able to:
(a) explain the importance of mitosis in the production of genetically identical cells, growth, repair and asexual reproduction;
(b) outline the cell cycle, including growth, DNA replication, mitosis and cytokinesis;
(c) [PA] describe, with the aid of diagrams, the behaviour of chromosomes during the mitotic cell cycle and the associated behaviour of the nuclear envelope, cell membrane, centrioles and spindle (names of the main stages are expected);
(d) explain how uncontrolled cell division can result in the formation of a tumour and identify factors that can increase the chances of cancerous growth;
(e) explain the meanings of the terms haploid and diploid (see section 5) and the need for a reduction
division (meiosis) prior to fertilisation in sexual reproduction (note: descriptions of homologous
chromosomes are not required for AS Level);
(f) use the knowledge gained in this section in new situations or to solve related problems.
- The Cell Cycle
What are all of the stages to the Cell Cycle? The Cell Cycle starts with its first stage called Interphase. The cell will be in this stage the longest amount of time out of all of the stages of the cycle. During the first part of Interphase is called...
- #80 Question 3
(a) The diagrams show a cell in various stages ofthe mitotic cell cycle. Name the stage represented by each diagram, and arrange them in the correct sequence. (b) Describe the role of spindle microtubules in mitosis. (3 marks) (c) The graph below shows...
- #32 Summary Of Cell And Nuclear Division
1. Growth of a multicellular organism is a result of parent cells dividing to produce genetically identical daughter cells. 2. During cell division the nucleus divides first, followed by division of the whole cell. 3. Division of a nucleus to produce...
- #31 Control Of Cell Division, Stem Cell, Haploid And Diploid Cells
Each cell contains genes that help to control when it divides. Cells divide by mitosis only when required. When receives signals from neighbouring cells, it responds by dividing or not dividing. If this control goes wrong, cells may not divide when they...
- # 30 Mitosis
Mitosis is a nuclear division giving rise to genetically identical cells in which the chromosome number is maintained by the exact duplication of chromosome. Significance of mitosis production of geneticlly identical cells: It keeps the chromosome...