vesicular nucleus‚ at interphase 2. Undergoing APOPTOSISnotice blebbing 3. Intermediate condensed nucleus 4. Less condensed nucleus 5. Anaphase 6. MOST CONDENSED Condensed/Hyperchromatic Nuclei: heterochromatin predominates low metabolic rate‚ low activity‚ http://studydroid.com/printerFriendlyViewPack.php?packId=62003 http://www.wadsworth.org/chemheme/heme/microscope/lymphocytes.htm Vesicular Nuclei: euchromatin predominates; indicates high metabolic rate/active cell [DNA is extended
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Brain of the Cell The nucleus is literally a membrane-bound organelle and is surrounded by a double membrane. I feel that the nucleus is of the greatest importance in the cell because it is the control center that oversees the metabolic functioning of the cell and it directs all the cells activities. The nucleus is like the head of the cell and without a head the rest of the body is useless. It is the largest organelle and within the nucleus is the DNA responsible for providing the cell with its unique
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Question: How does mitosis produce new cells‚ and how is mitosis the same and different? Materials: - Compound microscope - Alliums root slide - Whitefish embryo slide - Power supply Procedure: Refer to page 48 and 49 in the textbook. Results: See attached sheet for drawings of my results. Discussion: Analyze and interpret question 1 and 2 on page 49. 1. The cells in the root tip region of the alliums differ quite a bit from the cells that are found deeper in the root. First
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NUCLEUS The positively charged dense central part of an atom. In Biology the term first introduced by Miescher‚ employed to describe a structure round in the cells of with the tissues of animals and plants are composed. In general it is a viscous spherical body containing a structure known as the plasmosome or nucleolus and a tangle of material chromatin characterized by a special affinity for basic dyes‚ usually spherical mass of protoplasm found in the most living cells that directs the activities
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The nucleus * The largest cell organelle * The nucleus houses nearly all the cell’s genetic material * It has the instructions for making proteins Part of the nucleus | function | Chromatin | * The chromatin consists of DNA and proteins. * Some of these proteins controls the activities of the cell * When cells divide‚ chromatin condenses into visible chromosomes * The chromatin shows up as dark patches when it is stained. | Nucleolus | * The nucleolus makes RNA
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Animal Cell There are two types of cells that exist. Prokaryotic cells are simple cells that have few organelles. These cells don’t have a nucleus‚ but do have DNA. The DNA acts as a sort of “blueprint” for growth and reproduction in the cell. Prokaryotes are things like Bacteria. Eukaryotic cells are a lot more complex than a prokaryotic cell. These cells are able to convert food to energy‚ break down waste products‚ digest food‚ and assist with reproduction of new cells. Eukaryotic cells are in
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Yafaa Chaudhary PHYSICS 5 NOTES Physics 5 3.5.1 Radioactivity Evidence for the nucleus Qualitative study for the Rutherford scattering. Rutherford directed a narrow beam of α-particles‚ all of the same kinetic energy‚ in an evacuated container at a thin gold film‚ in order to identify the structure of an atom: The α-particles need to be of the same kinetic energy otherwise slow α-particles would be deflected more than faster α-particles on the same initial path. The container needs to be evacuated
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Evolution of Eukaryotic Cells from Prokaryotic Cells DNA- Deoxyribonucleic acid (DNA)‚ a self-replicating material present in nearly all living organisms‚ is the acid that carries genetic information. RNA- Ribonucleic acid (RNA)‚ is an acid that is present in all living cells‚ it’s main role is to act as messenger and carry instructions from DNA fro controlling the synthesis of proteins. What are Eukaryotic Cells and Eukaryotic Organisms? A eukaryotic cell is a cell that contains complex
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I. Describe the structure and function of the nucleus and mitochondria. The mitochondria is a semi-autonomous organelle which reproduces by bynary fission and has its own DNA. Its main function is to produce the energy intermediate ATP‚ through ATP synthase. Mitochondria could be considered a cell inside a cell. It has its own membranes (inner and outer membranes)‚ its ribosomes (to produce the proteins encoded in its DNA)‚ a matrix -- where aerobic respiration occurs. The invaginations of the inner
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Eukaryotic Cells Worksheet Provide a list describing at least three differences between prokaryotic and eukaryotic cells: 1. Number of cells – prokaryotic cells is single celled while eukaryotic cells can be single or multi celled. 2. The size of the cells – prokaryotic cells are really extremely tiny while eukaryotic cells are just extremely tiny. 3. The DNA structure – prokaryotic cells are a single circular chromosome attached to the cell wall while eukaryotic cells are linear
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