January 31‚ 2014 Mr. Robinson IB Biology I 2ND Period The Effects of Light on Plant Growth Introduction: Photosynthesis is the process in which plants use light energy‚ water‚ and carbon dioxide to produce food. Plants use the food they make for the growth and for the carrying out other life processes. Sunlight is the natural energy source for photosynthesis. White light form the sun is a mixture of all the colors of the light spectrum: red‚ orange‚ yellow‚ green‚ blue‚ and violet. Light
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transport of materials in three semi-permeable membranes: dialysis tubing‚ eggs‚ and onion cells. Background Information 1. Diffusion is the movement of solutes from high to low concentration. Osmosis is the movement of water from low to high concentration. Both refer to movement in/out of a cell‚ but osmosis refers specifically to water. 2. Isotonic‚ hypertonic‚ and hypotonic all refer to the comparison of concentrations of solutes in verses out of the cell. Isotonic is when the concentration in
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DEFINITIONS * Biology is a natural science concerned with the study of life and living organisms‚ including their structure‚ function‚ growth‚ evolution‚ distribution‚ and taxonomy. * The cell is the basic structural and functional unit of all known living organisms. It is the smallest unit of life that is classified as a living thing (except virus‚ which consists only from DNA/RNA covered by protein and lipids)‚ and is often called the building block of life. Organisms can be classified
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Lab 12: Meiosis kimberleigh Lewis Biology 1408-63400 Consider the Concepts Experiment: 1. A common misconception about meiosis appears when students identify which of the two divisions converts a diploid cell into two haploid cells. Meiosis I is the division immediately following DNA replication and replication does not occur again before meiosis II. However‚ meiosis I is the "reduction" division when a diploid cell forms two haploid cells. If the DNA duplicated before meiosis I‚ how
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Biology Worksheet Name ________ Chapter 11.1 Period _____ Section 11.1 The Work of Gregor Mendel Matching. Select the letter in front of the term that matches the statement. Type the “upper case” letter in the “answer” column. Use red font color. Q Term Answer Statement 1. A. Allele Process in sexual reproduction in which male and female reproductive cells join to produce a new cell. 2. B. Fertilization A specific characteristic of an individual. 3. C. Gamete One
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Diffusion and Osmosis of Solutes and Water Across a Membrane Brittany Bacallao Nova Southeastern University Abstract: This experiment gave a visual understanding of osmosis and diffusion. The first experiment proved that solutes would move down a concentration gradient if permeable to the selective membrane. The second experiment proved different solute concentrations affect the movement of water‚ depending on the solute concentration inside the cell. The purpose of this lab was to look for
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Osmosis Lab Report Hypothesis: Osmosis will occur when there is an uneven distribution of solute in a solvent. The higher the solute in solvent‚ then there will be a higher rate of osmosis through the diffusion gradient forming a hypertonic or hypotonic solution. Solvent with equal or no solute forms an isotonic solution. Materials: Distilled water‚ sucrose‚ dialysis tubing‚ string‚ 250 ml beaker. Procedure: To demonstrate and isotonic solution we needed 3 inches of dialysis tubing. We
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`Biology B1 Revision Classification • Organisms were based into groups based on their characteristics (classification). • Kingdom‚ Phylum‚ Class‚ Order‚ Family‚ Genus‚ Species Kingdom Main Characteristics Animalia Multicellular; heterotrophic feeders so no chlorophyll‚ no cell walls; complex cell structure with nucleus Plantae Multicellular; autotrophic feeders using chlorophyll; cell walls made of cellulose; complex cell structure with nucleus Fungi Multicellular; cell walls not made
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within a cell are called Diffusion. When molecules move across a cell membrane it is known as Osmosis. Diffusion is the process by which molecules of a substance move from areas of higher concentration of that substance to areas of lower concentration. Diffusion can be the transfer of anything anywhere. However‚ that is not true for osmosis. Osmosis is diffusion‚ but a specific type of diffusion. Osmosis is only the diffusion of water molecules through a selectively permeable membrane and a concentration
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Save and submit your assignment as: Matriculation No_ assignment 1.doc/PDF/docx. (e.g. U0xxx01B_Assignment01.docx) Assignment 1: Biological Sciences and Model Organisms (6%) Matriculation No.: A0101681R Name: Ramireddi Juhi Simanthika TA: (sorry couldn’t catch her name) 1. When a model organism is applied for researches‚ it has both advantages and disadvantages as they are described for M. musculus in the laboratory
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