same traits (1 paternal‚ 1 maternal) 5) 1. Primitive stem spermatogonium 2. Haploid secondary spermatocyte‚ spermatid‚ sperm 3. Provides nutrients to developing sperm sustentacular cells 4. Products of meiosis II spermatid 5. Product of spermiogenesis sperm 6. Product of meiosis I spermatocyte 6) Why are spermatids not considered functional gametes? They are non-motile and have too much excess baggage to function well in a reproductive capacity. 7) Differentiate between spermatogenesis
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I am a Sperm Have you ever wondered of the life of a sperm? It is a remarkable and amazing life? I am a sperm‚ and let me take you through my life. I live in the testes and I’ve lived there my entire life‚ from birth to currently. Some of my family have already left the house and gone on to explore the outside world. Us sperm have one goal in life and one goal only: to reach the egg. The egg is where all sperm dare to go and tries to fertilize the egg. Millions of our kind attempts
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finding gave way to the understanding of how new cells form. Remak shared his findings with Virchow‚ who then stole his ideas and published them as his own. As we have learned in class new cells form from old cells through the process of meiosis and mitosis. In meiosis‚ chromosome pairs synapse‚ cross over‚ align‚ and separate twice. The crossing over results in the mixing of genetic information between the chromosome pairs. When they separate‚ they divide and form four cells with varied genetic material
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Make-up test study guide Test 1: 1. 3 categories of natural sciences a. biology: microbiology b. physical: chemistry c. applied: medicine 2. relevant steps to scientific method a. observation b. hypothesis c. experimentation d. conclusion e. extra: theory 3. Science: objective‚ testable‚ fact; non-science: subjective‚ untestable‚ opinions 4. Life is is a characteristic that distinguishes objects that have signaling and self-sustaining processes from those that do not‚ a. Characteristics:
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particular places on the chromosomes called loci. During meiosis‚ each pair of alleles splits up or segregates so that only one allele from each pair is contained within a gamete (egg or sperm.) This is Mendel’s Law of Segregation. In sexual reproduction egg and sperm from parents unite to form a new individual or zygote. Thus‚ each parent contributes one allele for each genetic locus. Mendel’s Law of Independent Assortment states that during meiosis‚ each pair of alleles is assorted randomly and inherited
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Polymer Mitosis Codons Kinesis Monomer Cytokinesis Promoter Taxis Denaturation Zygote Introns Carrying Capacity Endergonic Haploid Exons Parasitism Exergonic Diploid Anticodons Commensalism Feedback Inhibition Meiosis Mutation Mutualism 1. Given the atomic number of an element‚ be able to determine the number of neutrons in two different isotopes. 2. Given the atomic number and mass number‚ be able to draw the electron configuration of an element
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Maintaining a Balance Enzymes 1.1 Identify the role of enzymes in metabolism‚ describe their chemical composition and use a simple model to describe their specificity on substrates Enzymes are biological catalysts‚ meaning they are organic and speed up a chemical reaction without taking part in it. This means it has a vital role in metabolism where it ensures that the chemical reactions that make up metabolism can function fast enough to sustain life by lowering activation energy. Metabolism
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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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Explain the structure and inheritance of genes (15 marks) A cell’s nucleus contains chromosomes‚ which are long‚ coiled packaged and organized chromatin (molecules of DNA). Chromatin is a complex of molecules found in cells‚ consisting of DNA‚ protein and RNA. Proteins are polypeptides (a large sequence of amino acids). The chief protein component of chromatin are histones‚ which package and order the DNA into structural units called nucleosomes in order to fit in the cell‚ as well as reinforce the
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Cheat Sheet for Test 3 What is stress? Any force that pushes the body out of optimum homeostatic conditions Stressors include Digesting food‚ exercising‚ waking after a long sleep Walking outdoors after being indoors Impending happy event such as a wedding or party‚ falling in love Arguments ‚ over work‚ exams The General Adaptation Syndrome is A predictable set of behavioral
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