electron microscope so the image is not clear‚ however they can view living organisms. These types of microscopes are used in schools to view simple cellular structures‚ which is good to teach simple biology Mitosis and meiosis can be seen with light microscopes. the different stages of mitosis; when the spindle fibers are formed in Prophase‚ the chromosomes lining up along the middle of the cell in Metaphase‚ the chromatids separating and moving to opposite sides of the cell in Anaphase and finally
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not very motile. As the sperm make their journey through the tightly coiled epididymis‚ they mature and become motile. In relation to the diagram of spermatogenesis‚ each human Spermatogonium (germ stem cell) gives rise to many Spermatogonia by mitosis. So the number of chromosomes in each Spermatogonium cell is conserved at 46 chromosomes. Each Spermatogonium will then grow and develop into a Spermatocyte I which will duplicate its DNA so that each of its 46 chromosomes will have two chromatids
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1st Long Examination I. Multiple Choice. Choose the best answer. Write the letter of your choice on your answer sheet. D 1. DNA is unique among molecules in that it can a. form multipolymer complex c. withstand very high temperatures b. come apart and re-form d. replicate itself B.2. Which of the following cellular organelles breaks down complex macromolecules‚ such as polysaccharides and proteins? a. Golgi complex b. lysosome c. rough ER d. mitochondrion A.3. The most abundant
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Duchenne muscular dystrophy is a muscular dystrophy but in order to understand it and how it works you will need to know about genetics and how they work and after that‚ I can tell you about a few treatments and therapies. Duchenne muscular dystrophy or DMD for short is a mutation that happens in the genes. Duchenne is mostly found in boys and rarely found in girls. Duchenne can be inherited in an x-linked fashion. The symptoms usually appear before the age of 6. Sometimes symptoms can start
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Exam Review – January 2013 Diversity Unit - List taxonomic ranks in order. What is the significance of this order? Domain‚ Kingdom‚ Phylum‚ Class‚ Order‚ Family‚ Genus‚ Species. Classification of species: kingdoms contain many different types of organisms‚ each taxon contains progressively fewer types of organisms‚ taxon “species” is narrowest category‚ containing only one type of organism. As you go from kingdom to species‚ organisms share more and more in common. - Explain and give an example
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(G1 and G2) and S (for synthesis) phase‚ in which the genetic material is duplicated and an M phase‚ in which mitosis partitions the genetic material and the cell divides‚ make up the cell cycle. In G1 cellular content is duplicated accept chromosomes. In S phase‚ each of the 46 chromosomes is duplicated by the cell. G2 double checks this looking to make some repairs if necessary. Mitosis is the process where by sister chromatids are split up to form two different cells. Once this has happened the
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first stage of mitosis characterized by the ____ of the chromosomes condensation 4)the attachment of which molecules is critical for the proper separation of sister chromatids? microtubules 5)the accommodation of the very long dna fiber into a limited space of the nucleus is achieved by coiling around beads of histones into repeating subunits. These subunits of chromosomes are given the name nucleosomes 6) which of the following produces identical cells? mitosis *7)a process
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questions such as… In plants through what process are spores always formed? ____________ (mitosis‚ meiosis‚ or fertilization) Plant spores are ___________. (Use either haploid or diploid) Do all plants form spores? Plant spores grow into a multicellular ________ (haploid or diploid) form that will later form gametes. In plants‚ gametes are formed by ____________. (Use either mitosis or meiosis) Gametes are _________. (Use either haploid or diploid) Do all major groups of plants
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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
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Lecture 11: Cytoskeleton in Action Slide 2: Mysoin V can walk a lot faster than Myosin 2. Saccharomyces Cerevesiae is a type of yeast. Myosin V interacts with one end of the nucleus‚ and another binds to the other side to orient the nucleus. Slide 3: The entire cytoplasm moves in one side: “streaming”‚ what happens is that very close to the membrane‚ the chloroplast are not moving and close to it are the actin filaments that are not moving. Then everything else is on the Myosin V which is moving
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