3. Metaphase‚ in this stage chromosomes are attached to spindle by centromeres and line up across the equator. Chromosome separates at the centromere and the chromatids are pulled apart. 4. Anaphase‚ in this stage‚ chromatids are pulled by the microtubules and move to opposite poles. 5. Telophase‚ in this stage‚ chromatids reach the poles of the spindle and nuclear envelope reforms as well as nucleolus. The spindle eventually disappears. Nucleoli reappear. Mitosis is completed. Hypothesis My hypothesis
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Animal Cell Kaile Tuisamatatele Blue 09.23.14 Table Of Context 1 Nucleus 2 Nucleolus 3 Rough Endoplasmic Reticulum 4Smooth Endoplasmic Reticulum 5Golgi Apparatus 6Ribosomes 7Cell Membrane 8Centrioles 9 Conclusion 10Work cite Nucleus Function:The nucleus is usually located around the center of the cell connected to the endoplasmic reticulum as part of the endomembrane system. The nucleus controls many of the
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AP BIOLOGY- Mitosis and Meiosis Cell Division Lab Part 1-MITOSIS summary: In this experiment first the stages of an onion cell undergoing mitosis are going to be observed and every stage is going to be detected and drawn on paper. A brief description to what is going on should be attached to the pictures. This is important to understand the basics of cell division which is necessary growth‚repair
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AP-2 Lab 01 – Lab Report Name: Shamika C. Dent Section: AP 2 – 131 – Fall 2010 Laboratory Report: Exercise 1: The Endocrine System Purpose: What is the purpose of this exercise? Is there any safety concerns associated with this exercise? If so‚ list what they are and what precautions should be taken. 1. Identify the major endocrine glands and other organs containing endocrine cells on models and diagrams (glands listed below). 2. Identify the major endocrine glands in the cat (glands
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Neuroscience: Neurotransmitters (small molecule and neuroactive)‚ storage release removal and disease. 1. The brain is made up of neurons that process and transmit information by electrochemical signaling. Neurotransmitters are endogenous chemicals which relay‚ amplify‚ and modulate signals between a neuron and another cell. Chemical messengers must fulfill four criteria to be considered a transmitter. These four steps include the synthesis of a transmitter substance‚ the storage and release of
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While this occurs the cell creates spindle fibers (specialised microtubules). Centrioles external to the nucleus form two pairs. The reason they form two pairs is so that during the metaphase‚ where the envelope has disappeared the microtubules move in pairs to opposite poles of the cell. When the nucleolus has completely broken down it becomes possible for the spindle fibers toattach themselves to the
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gyMicrobiology: is a study of microorganisms (microbes‚ germs) and their activities Microorganism: An organism or a virus too small to be seen without a microscope (smaller than 0.5mm) Misconceptions of Microorganisms * All microorganisms are pathogenic (disease producing) FALSE * The majority of bacteria are harmless and beneficial TRUE Aspects of microbiology * Basic biological science * About living cell and how they work * About microbial diversity and their evolution
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Yr 12 Biology Summary Notes Rangitoto College 2006 STRUCTURE AND FUNCTION IN CELLS Achievement Standard 90464 – Biology 2.8 – Describe cell structure and function TYPES OF CELLS • PROKARYOTIC CELLS = more primitive‚ unicellular‚ have no organised nucleus‚ no membrane-bound organelles‚ genetic material is 1 circular DNA molecule‚ can have tiny extra rings of DNA called plasmids‚ all have cell walls e.g. bacteria and blue-green algae • EUCARYOTIC CELLS = unicellular
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movement of the chloroplasts in the hydrilla leaf cells? what its direction? and what process could account for the movement of the cytoplasm? Clockwise movement. The lipotubuloids consisting of osmiophilic granules surrounded by a system of microtubules move from one place to another within a cell by
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Exercise 4 Lab Report (3) Individual: Prepared blood slide (a.) Compare red and white blood cells - what cellular features are present in white cells but not in red blood cells and vice versa? Include a digital image of the blood cells present in the permanent dry. Red Blood cells carry hemoglobin inside of them which helps carry oxygen from the lungs to the rest of the body. Hemoglobin is what gives blood cells the red pigmentation. The amount of blood cells present in the blood give it
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