Name___________________________________ Score________________ Section___________________________________ Date_________________ EXERCISE NO. 1a MITOSIS OBJECTIVES The students should be able to: 1. identify the different steps involved in mitosis and meiosis; 2. describe the behavior of the chromosomes during each stage of cell division; 3. identify specific events in mitosis and meiosis that allow the inheritance of traits and generation of variation. MATERIALS
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Planning Introduction Stomata are pores on the bottom of leaves of vascular plants. The function of stomata is to allow gaseous exchange (transpiration) between the plant and the external environment (see diagrams below). This process is carried out by the plant‚ which controls the opening and closing of stomata via the guard cells. The more stomata a leaf contains the greater the rate of gas exchange and the less water it will be able to accumulate. Stomatal pores are formed between
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Extended experimental investigation: effects on membranes of environmental stress Background It is not possible to observe membranes directly‚ so this investigation is an indirect study of the effects of different substances and treatments on living beetroot cells. Beetroot cells have been chosen for this activity because each beetroot cell has a large central vacuole bounded by a membrane (Figure 1). Contained in the vacuole is the red pigment anthocyanin‚ which gives the beetroot its
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CYBER CRIMES Now a day in this world cyber crime is on the rise. Everywhere you look everyone uses a computer for messaging‚ banking‚ keeping in contact with families‚ gaming‚ and many other things. Cyber crime is presenting big problems for criminologists nowadays‚ 1.) it is rapidly evolving‚ new things being built every day. 2.) It is difficult to detect through law enforcement channels‚ 3.) planning or coordinating its control demands technical skills that match those of the perpetrators. There
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B io Factsheet September 2000 Number 76 The Eukaryotic cell cycle and Mitosis This Factsheet covers the relevant AS syllabus content of the major examining boards. By studying this factsheet the candidate will gain a knowledge and understanding of: • the different phases of the eukaryotic cell cycle (a eukaryotic cell has membrane bound organelles) • the importances of mitosis • the process of mitosis The eukaryotic cell cycle Fig 2. Quantity of DNA in the cell during different
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J. of Advanced Engineering and Technology Vol. 2‚ No. 2 (2009) pp. 281-283 Synthesis of 2-Acetylcyclohexanone Using Pyrrolidine-enamine Eun-SunYoo Department of Oriental Medicine Industry‚ Honam University‚ Korea (Received : May. 20‚ 2009‚ Revised : Jun. 02‚ 2009‚ Accepted : Jun. 12‚ 2009) Abstract : 2-Acetylcyclohexanone was synthesized by acylation reaction of acidic anhydride using enamine as organiocatalyst instead of a strong base‚ NaOH‚ resulting in milder reaction conditions. The
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Information Service (NESDIS) data centers are central to answering some of the most pressing global change questions that remain unresolved. The National Climatic Data Center contains the instrumental and paleoclimatic records that can precisely define the nature of climatic fluctuations at time scales of a century and longer. Among the diverse kinds of data platforms whose data contribute to NCDC’s resources are: Ships‚ buoys‚ weather stations‚ weather balloons‚ satellites‚ radar and many climate proxy
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Chapter 1 Exploring Life Lecture Outline Overview: Biology’s Most Exciting Era Biology is the scientific study of life. You are starting your study of biology during its most exciting era. The largest and best-equipped community of scientists in history is beginning to solve problems that once seemed unsolvable. Biology is an ongoing inquiry about the nature of life. Biologists are moving closer to understanding: How a single cell develops into an adult animal or plant. How plants convert
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What is nurture vs. nature? According to dictionary.com the definition of nurture is to support and encourage‚ as during the period of training or development; foster; and nature means the material world‚ especially as surrounding humankinds and existing independently of human activities. When you first hear the word nurture what’s the first thing that comes to mind? This word can mean a lot of things when you observe the definition of this word. While reading different articles they all seem to
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The job of a locksmith is no longer restricted to just picking locks or duplicating keys. Today‚ professional locksmiths offer a variety of services‚ which are often accessible through service providers. These services are not varied through their specific use‚ but their applications also go across different industries. From home and car protection up to industrial security‚ there is a corresponding locksmith service that will be of great help to any individual. Below are some of the common types
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