QUESTIONS AND ANSWERS SECTION A: SIMILARITIES‚ DIFFERENCES‚ AND DEFINITIONS Gametes are mature haploid reproductive cells that unite to form a zygote that develops into a new individual. Gametes are also called sex cells. An egg or ovum is a haploid female reproductive cell or gamete whereas a sperm is a male haploid reproductive cell. A zygote is the initial cell that is formed as a result of the union of a male and a female gamete by means of sexual reproduction. The two haploid cells merge
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Cell Division‚ Heredity‚ and Rcolution Practice Questions Cell Division An organism is heterozygous at two gene loci on different chromosomes. Explain how these alleles are transmitted by the process of mitosis to daughter cells. After mitosis the parent cell’s genome is dividedninto two daughter cells. In most eukaryotes‚ the nuclear envelope that separates the DNA from the cytoplasm disassembles. The chromosomes align themselves in a line spanning the cell. As the cell elongates‚ corresponding
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Chapter 1- 2 CHAPTER 1 INTRODUCTION: THEMES IN THE STUDY OF LIFE OBJECTIVES Exploring Life on Its Many Levels 1. Briefly describe the unifying themes that characterize the biological sciences. 1. The cell an organism’s basic unit of structure and function 2. Heritable information: the inheritance of biological information in the form of DNA which is encoded in the nucleotide sequence of DNA. 3. Emergent properties: emerge as a result of interaction among components at the
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Behavioral Genetics The field of behavioral genetics was introduced by the cousin of Charles Darwin‚ Sir Francis Galton (1822-1911). Galton‚ a British population geneticist was the first to document his study of heredity and human behavior. Galton concentrated his studies on correlations found among families of a certain social status to discover which character traits might be inherited. Galton coined the term “eugenics” which meant “well-born.” (Lehrman‚ 1998). However‚ the term “genetics”
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Chapter 1: Biology- The study of life A Hierarchy of Organization 1. Molecules 2. Organelle 3. Cell 4. Tissue 5. Organ 6. Organism Emergent Properties- Novel properties that emerge as each step up the hierarchy of biological order is taken. Reductionism- Reducing complex systems to simpler components that are more manageable to study. Cells- The lowest level of structure capable of performing all the activities of life‚ all organisms are composed of cells which are the basic units of structure
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Unit 1 Questions 1- 3 Figure 1 The sources of blood glucose in a human body during a normal day of 24 hours are shown in the above figure. Glucose is primarily derived from glycogenolysis occurring between meals. Glucose is chiefly sourced from the dietary intake for few hours following the principal meals of the day. Late at night‚ gluconeogenesis becomes the predominant source of glucose. 1 Glycogenolysis decreases after midnight because A C 2 gluconeogenesis takes place. hepatic glycogen is
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London Examinations GCE Biology Ordinary Level Paper 1 Monday 10 May 2010 – Morning Time: 1 hour 30 minutes Team Leader’s use only Question Leave Number Blank 1 2 3 4 5 Materials required for examination Nil Items included with question papers Nil 6 7 8 9 Instructions to Candidates In the boxes above‚ write your centre number‚ candidate number‚ your surname‚ initial(s) and signature. Check that you have the correct question paper. Answer ALL the questions. Do not use pencil. Use
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How Doctors Think Jerome Groopman‚ M.D. March 12‚ 2008 1. From simple mistakes to complex outcomes is what the practice of a Doctor consists of. The occurrence of this has massively increased throughout the years from veteran doctors to fresh out of college doctors‚ due to conformity with one’s duties. This book describes copious situations in which the Doctor incorrectly diagnosed their patient due to lack of concentration or compliance with their career. Dr. Groopman also lists and discusses
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Heredity and Hormones Kay Alexander BEH/225 September 2‚ 2010 Instructor Mary Rockey‚ Ph. D.‚ BCBA Heredity and Hormones As much as people can see the physical characteristics that are passed down along generations‚ people may not realize just how much of their behavior is passed down genetically. The endocrine system contain glands that secrete hormones into the bloodstream that act as a communication system that helps coordinate and control body functions like‚ reproduction‚ sexual
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Biology - Chapter 9 Study Guide (DNA) 1. Define vaccine. Substance that is prepared from killed or weakened diseased causing agents 2. What is the name of the scientist that performed transformation experiments? Griffith Name the living organisms used in these experiments. mice 3. What is transformation? A change in the genotype caused when bacterial cells take up foreign genetic material 4. Who discovered what material was responsible for transformation? What is the material?Oswald
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