described as instruction manuals. Genes are made up of DNA‚ which carries the instructions to make and operate parts of our bodies. (learn.genetics.utah.edu‚ 2004) Genes are passed from parent to offspring through a type of cell division called meiosis. Meiosis is used in the production of sex cells. (Gametes) The Female gamete is the ova and the male gamete is the sperm. “This process results in the chromosome number being halved‚ so instead of pairs of chromosomes in each resulting cell‚ there is
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Name ______________________________________ Virtual Lab Report: Part I Due by: 11:59 PM PST on the second Saturday of class Virtual Lab 1: Virtual Microscopy A. Estimate the size (length and width) of these microscopic objects in micrometers (microns): 1. An E. Coli cell. 3 x 0.6 um =1.8 um 2 A mitochondrion. 4 x 0.8 um = 3.2 um 3. A Red blood cell. 8 um 4. A virus. _Hepatitis 45 nm = .045 um 5. A water molecule. 275 pm =.275 um B. 1 Describe three differences between prokaryotic and eukaryotic
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Genetics Practice Test Multiple Choice Identify the choice that best completes the statement or answers the question. ____ 1. Pea plants were particularly well suited for use in Mendel’s breeding experiments for all of the following reasons except that a.|peas show easily observed variations in a number of characters‚ such as pea shape and flower color.| b.|it is possible to control matings between different pea plants.| c.|it is possible to obtain large numbers of progeny from any given
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1. Identification of Some Macromolecules 1) What are 2 types of treatment controls‚ and explain each. Positive control: gives positive result if experimental conditions were followed correctly Negative control: gives negative result if experimental conditions were followed correctly 2) What are the most abundant elements in living material? Carbon‚ Hydrogen‚ Oxygen‚ Nitrogen‚ Sulfur and Phosphorus 3) What are the 4 major biological macromolecules? Carbohydrates (monosaccharides &
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hemisphere of the egg — the animal pole — is dark. * The lower hemisphere — the vegetal pole — is light. * When deposited in the water and ready for fertilization‚ the haploid egg is at metaphase of meiosis II Fertilization Entrance of the sperm initiates a sequence of events: * Meiosis II is completed. * The cytoplasm of the egg rotates about 30 degrees relative to the poles. * In some amphibians (including Xenopus)‚ this is revealed by the appearance of a light-colored band‚
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animals (eukaryotes) undergo a similar process for cellular division/reproduction? Both plant and animal cells undergo mitosis and meiosis. In plants‚ there is an alternation of generations; the gametophyte generation‚ where haploid gametes (pollen and ovule; sperm and egg) are produced via mitosis. Then the sporophyte generation combines these two into spores via meiosis‚ resulting in a diploid zygote which can grow into new cells. 2. Describe the sun as the ultimate source of energy for life?
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1.1 What is developmental science‚ and what factors stimulated expansion of the field? Developmental science is an area of scientific study that strives to understand why some things change and others remain constant as we age. The field of developmental science is expanding rapidly due to an exerted social pressure to improve the lives of people. 1.3 Describe the lifespan perspective on development. The lifespan perspective on development is that no one age period impacts development more than
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adjacent to the nucleus that contains the centrioles and serves to organize microtubules. 2. How does the process of mitosis compare with meiosis? In mitosis‚ each of the two new cells (called the daughter cells) resulting from the cell division receives the same number of chromosomes that were present in the precursor cell (called the parent cell). In meiosis‚ the number of chromosomes is reduced so that the daughter cells receive only half of the chromosomes possessed by the parent cell. This process
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Expt. 7. Sexual Plant Reproduction: Testing conditions required for pollen germination and tube growth ____________________________________________________________________________ File: pollen Modified from E. Moctezuma & others for BSCI 442 (Sze) Objectives: Get familiar with the parts of flowers: male and female organs Observe pollen germination and tube growth in real time. Test the conditions that stimulate pollen germination and tube growth. Observe cytoplasmic streaming (due
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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
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