10th Grade Biology Textbook Analysis: A Readability Study Teachers should consider assessing the textbooks they are planning to use in the classroom. Textbook evaluations and assessing students’ connections with texts are important tasks for content area teachers and students (Vacca, 2002). Teachers are constantly assessing the suitability of reading material for their students. Readability can be defined as the grade level at which a document […]

Biology Virus Essay A virus is a microorganism that cannot reproduce without a host. As a result of this, there has been a lot of controversy on whether or not a virus is a living or non-living organism. The dictionary. com definition for life is, “the condition that distinguishes organisms from inorganic objects and dead organisms, being manifested by growth through metabolism, reproduction, and the […]

Biology: 1. Living Things Please remember to photocopy 4 pages onto one sheet by going A3>A4 and using back to back on the photocopier Syllabus OB38 Understand how to use a simple key to identify plants and animals, including vertebrates and invertebrates OB39 Investigate the variety of living things by direct observation of animals and plants in their environment; classify living organisms as plants or […]

Chapter 15 Signal Transduction 1) Endocrine, paracrine , autocrine signaling, and cell-cell contact (Fig. 15-2). Endocrine signaling is long distance signaling. An example would be pancreatic cells secreting insulin. Paracrine signaling is for close proximity. An example would be a nerve cell releasing neurotransmitters. In autocrine signaling the cell that produces the ligand also contains the receptor for that ligand. This is how cancer cells […]

Introduction Popularity, high social status and subordinate status can affect person’s sense of well being in lots of different ways. Interpersonal experiences between human relationships can determine how the human brain shapes our personal experiences whether they are positive or negative. Within the Mental Health field, subordinate status can be reduced with strategies put into place to make a person feel more equal within our […]

Before Koch’s developed the understanding of the causes of disease, Louis Pasteur published his ‘germ theory’ in 1861. His theory was that germs also cause human diseases. He carried out a series of experiments three years later, which convinced scientists that his germ theory was correct. It meant that for the first time in history, scientists and doctors knew the origin of diseases – in […]

CONCLUSION EXPLANATION Evaluation Procedures RELIABILITY LIMITATIONS/WEAKNESSES/ERROR IN LABORATORY INVESTIGATIONS Improving the Investigation MODIFICATION TO THE EXPERIMENT HYPOTHESIS Solanum tuberosum L. in masses will decline as the concentration (2%, 5%, 10%, 20%, and 25%) of sodium chloride increases. Potato slices placed in distilled water will have a higher mass percentage due to the cells becoming turgid. BACKGROUND INFORMATION Diffusion is the movement of molecules from a […]

Do not open this examination paper until instructed to do so. Answer all the questions. For each question, choose the answer you consider to be the best and indicate your choice on the answer sheet provided. 8808-6004 13 pages © International Baccalaureate Organization 2008 –– Which of the following characterizes tissues? A. B. C. D. A group of cells that develop independently. A group of […]

This causes a decrease in lung pressure, (intrapulmonary pressure) which establishes the pressure gradient from the atmosphere (1 59 meg) to the alveoli (105 meg) which then results INSPIRATION. As oxygen is inhaled it enters the external mares (nostrils), from the external mares it moves into the nasal cavity which functions in moistening, filtering and warming of the air. After the nasal cavity the air […]

Mitosis Hands-On Labs, Inc. Version 42-0091-00-01 Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions, diagrams if needed, and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in […]