CHAPTER 12- THE CELL CYCLE I. Concept 12.1- Cell division results in genetically identical daughter cells A. Overview 1) The continuity of life is based on the reproduction of cells or cell division. 2) The cell division process is an integral part of the cell cycle‚ the life of a cell from the time it is first formed from a dividing parent cell until its own division into two cells. B. Cellular Organization of the Genetic Material 1) A cell’s endowment of DNA‚ its genetic
Premium Cell cycle Mitosis Chromosome
Grade 11 University Biology Exam Teacher: Mr. Anderson SBI 3U1 Jan 21‚ 2009 Time: 2 hours Total Marks /111 Pages 1-8 Name: _________________________ Instructions 1. All questions should be answered on the exam page. 2. There will be no talking and/or other disruptions during the exam. 3. If you have any questions raise your hand and a teacher will come to your desk to help you. 4. When you are finished please raise your hand the teacher will come to you
Premium Cell Bacteria Cellular respiration
MEIOSIS We study Gametes through a Karyotype Each pair is called a homologous pair Diploid= 23 pairs of chromosomes and 46 total chromosomes (2n) Haploid= 23 individual pairs Mitosis- makes body cells‚ or asexual reproduction like cloning Meiosis- makes sex cells Crossing Over- Occurs in Prohpase I - each group of 4 chromatids are called a tetrad. Individual chromatids may wrap around eachother and pieces may break off and reattach to other chromatids. Genes on chromosomes may change places
Premium Stem cell Developmental biology
chloroplast and chlorophyll‚ which is the method for gaining nutrients and performing transpiration. Plants are also identified by their ability to carry out alternation of generations‚ which means that plants are capable of performing both mitosis and meiosis in order to reproduce sexually (http://en.wikipedia.org/wiki/Alternation_of_generations ). Another way to identify plants is if they are deciduous or evergreen‚ and what the leaf pattern looks like. Netted or parallel leaves can identify the
Premium Plant Photosynthesis Leaf
20 Questions since exam 2 30 Questions are Cumulative 15 Exam 1 15 Exam 2 * Natural selection * Dogs Decoded * More similar in looking like dogs * Mutations * Most are not beneficial * Stabalizing‚ directional‚ and disruptive selection * Post-zygotic Barrier * Mules are sterile * Population * Same organism that live in the same area * The smallest unit capable of evolving is the population * Similarity of embryos in fish‚ frogs‚ birds
Premium Evolution Eukaryote
organism Population level: Population – species – community – eco system Reading scientific graphs: Independent variable – your own setting – x axis Dependent variable – measurement‚ Y-axis Centrioles (p. 87) Pull chromosomes during mitosis (animal cells) Assemble microtubules Anchor flagella / cilia 3 Differences between animal cells Position of nucleus Control Tower (p81) Nucleus: Control center‚ directs protein synthesis and cell reproduction Nucleolus: Assembles Ribosomes
Premium Eukaryote Bacteria Cell
contrast sexual and asexual reproduction. 3. Distinguish between the terms: DNA‚ gene‚ chromosome‚ replicated chromosome‚ sister chromatid and centromere. 4. What are the two phases of the cell cycle? What are the three stages of interphase? 5. Mitosis is the division of the ______‚ while cytokinesis is the division of the ______. 6. Describe the appearance and the location of the chromosomes during the four stages of mitotic cell division‚ as pictured in Figure 8.7. 7. How is cytokinesis
Premium Mitosis Chromosome Cell nucleus
James Ruse Agricultural High School Module 9.3 Blueprint of Life Biology Notes 2013 Helen Ying 19/03/2013 By Helen Ying © 2013 Biology Notes – HSC Course 2013 MODULE 9.3 – BLUEPRINT OF LIFE 1. Outline the impact on the evolution of plants and animals of: a. Changes in physical conditions in the environment o Rising and falling sea levels – land and ice bridges across continents have affected distribution and therefore evolution when these bridges disappeared and populations were isolated
Premium DNA Gene Genetics
required to attempt at least one question from each part. Part - A Cell Biology: Morphology. Chemical composition and functions of nucleus‚ nuclear inclusions and cytoplasmic organelles‚ protein synthesis and molecular genetics. mechanism of mitosis and meiosis. Part - B General Physiology: Respiration‚ respiratory mechanism‚ respiratory pigments‚ transport of oxygen and carbon dioxide‚ circulation : haemodynamics‚ control of cardiovascular system‚ nutrition: modes of nutrition‚ digestion and assimilation
Premium Gene Biology Animal
SBI3U1-04 Final Exam Study Notes Unit 1: Diversity of Living Things 1.1 Importance of Biodiversity Spotlight on Honeybees Very important‚ pollinate flowers allowing plants to reproduce Play vital role in food chain‚ if they die‚ all organisms that rely on them will die as well Dying because of pesticides‚ parasitic Varroa mite (infects beehives and sucks of bees’ blood)‚ the Israeli acute paralysis virus (immobilizes and kill bees) No genetic diversity = Less resistant to parasites
Premium DNA Chromosome Cell