Biology Key Questions – Lesson #1 1. How many electrons does Mg2+ have? Answer: Mg2+ has 10 electrons. A Magnesium atom has 12 electrons‚ 2 of which are valence electrons. The atom will lose the 2 outermost electrons in order to stabilize its electron shell. The nucleus maintains its 12 protons and becomes a Mg2+ ion. 2. Given that the half-life of the radioisotope carbon-14 is 5730 years‚ how useful do you think this isotope would be for dating bones that are over a million years
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Kyle Eagle Human Biology BIO 108 G Final Exam Essays FINAL EXAM ESSAY 1). A cell is in the process of transcription. The single strand of DNA that is being copied has the sequence ATC GCA GGA TGC. Indicate the mRNA strand that will be synthesized from this strand‚ listing the correct sequence of bases. Describe why this step is important in the process of producing proteins. Explain how gene expression is regulated. The mRNA coding sequence can be described as units of three nucleotides
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low-power lens and the high-power lens. If you saw different forms of the shrimp‚ try to determine which is more mature and describe the differences. Answer is below Answer SHAPE MERGEFORMAT Your Score___ of 10 Graded Assignment SCI203A Biology Unit 1 Lesson 5 Laboratory Using a Microscope 2006 K12 Inc. All rights reserved. Page PAGE 1 of NUMPAGES 6 Copying or distributing without K12s written consent is prohibited. cEw--WeTFXeXncEvAJvbR6D QY/T Oi aqUquUtD1XY R1apV.VsvLmeY E09oen@8MBIO
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Historical Development of Nursing Timeline Nursing originated from the intuitive approach of caring for the sick members of the family. The profession did not exist as a distinct discipline before the birth of Christ. In this period‚ nursing was based on instinctive actions and was not acquired from formal education. It did not require an evidence of training or education and was solely based on observation and experience. It was believed that it is a way of love‚ compassion‚ and kindness that was
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Thursday January 17 Mastering biology course id=MBPOLLACK01639 Life first appeared on earth about 4 billion years ago Origin of life is a hypothesis not a theory Very little oxygen in early earths atmosphere Spontaneous generation of life- random formation of life Millions of species on earth‚ up to 100 million the expirement of miller and urey showed what? test question a few centuries ago: people thought that new living things appeared all of the time(spontaneous generation of life)
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The media plays a crucial role in forming and reflecting public opinion. It is even said to be a "mirror" and "molder" of public opinion‚ meaning that the public copies or follows as well as assembles thoughts and judgments through the media and the information it displays. Fahrenheit 9/11 and Fahernhype 9/11 both contain information that have mirrored and molded the opinions of the American public on the Bush Administration and the War on Terrorism. Both films give complete opposite viewpoints and
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enzyme-catalyzed reaction is called a substrate. The area of the enzyme that binds to the substrate is called the active site - where the action takes place. * Cofactors and coenzymes are small molecules or ions that help enzymes to act. HSC Biology Notes – Hugh Phillips Maintaining a Balance 1.Most organisms are active in a limited temperature range: Identify the role of enzymes in metabolism‚ describe their chemical composition and use a simple model to describe their specificity on substrates:
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Michelle Gordon‚ TJ (Group 4) Section 33 Yeast Cell Respiration 10/04/2010 Part B: Explanation of Results All cells carry out the process of cell respiration in order to meet their energy needs. It is advantageous for cells to have the ability to metabolize different substrates. In this experiment‚ we investigated each sugar’s (glucose‚ lactose‚ sucrose‚ fructose‚ and lactose/lactaid) cell respiration rate. When referring to my group’s graph and data‚ glucose ended up with the highest
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Title: Grass Growth Effect Jessica Suarez Option A: Observation: During the winter‚ you spread salt daily on your driveway to melt the snow. In the springtime‚ when the lawn begins to grow‚ you notice that there is no grass growing for about 3 inches from the driveway. Furthermore‚ the grass seems to be growing more slowly up to about 1 foot from the driveway. Question: Might grass growth be inhibited by salt? My hypothesis is that the grass growth in being inhibited by salt. A typical
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Essay Question 1 Explain how changes in habitat can lead to habitat fragmentation. How does this affect the population of animals in that area? Species lose their habitats when those habitats are destroyed outright‚ but habitat loss also occurs when habitats are altered through more subtle processes‚ including fragmentation and other forms of degradation. The sudden and complete elimination of habitat is uncommon at large scales; instead‚ what we usually witness is gradual‚ piecemeal degradation
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