in lab‚ explain the differences between the solutions hypertonic‚ hypotonic‚ and isotonic and how they respond using the understanding of the cell membrane structure‚ types of transport mechanisms such as active‚ passive‚ diffusion‚ osmosis‚ and explain the movement of particles moving across the cell membrane. In this lab was divided into two parts. The first part was varying the concentration and the second part was varying the temperature. All cells are controlled by a cell membrane or plasma
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How the structure of proteins are related to their functions Rachel Morris The basic building blocks of proteins are amino acids‚ the biuret reaction tests for protein. A solution of sodium hydroxide is added to a sample then a few drops of copper sulphate solution‚ if positive – the solution will turn mauve. There are 20 different amino acids and they can be joined in any order. Therefore there can be many different functions. A protein consists of one or more polypeptide chains (a polypeptide
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Prokaryotic vs. Eukaryotic cells have similarities and differences. They can be found in different places. They have different ways of functioning and can be made up of different things. But just how they are very different they have some similarities that can in a way unite them and make them a part of the of a cell family. With their differences and similarities‚ they’re just here for one solemnly purpose‚ to serve whatever type of organism they are present in. A Prokaryotic cell does not have a nucleus
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Exercise 1. Upgrading TO: Valerie Bernier‚ Dentist RE: Can I upgrade the office? Hello Dr. Bernier‚ I am happy to help out with your question. From the information you have given me about the workstations‚ i’m sure that your machines meet the minimum requirements for a Windows 7 Professional install. Unfortunately‚ an upgrade from Windows XP to Windows 7 Professional isn’t possible without performing a clean install. Only a Windows Vista can be upgraded to Windows 7 Professional without having
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I. Describe the structure and function of the nucleus and mitochondria. The mitochondria is a semi-autonomous organelle which reproduces by bynary fission and has its own DNA. Its main function is to produce the energy intermediate ATP‚ through ATP synthase. Mitochondria could be considered a cell inside a cell. It has its own membranes (inner and outer membranes)‚ its ribosomes (to produce the proteins encoded in its DNA)‚ a matrix -- where aerobic respiration occurs. The invaginations of the inner
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in the cell cycle. Particular protein kinases give the go-ahead signals at G1 and G2 checkpoints. These protein kinases are present at a constant concentration in the cell but are inactive unless in the presence of cyclin‚ these are cyclin dependent kinases. The activity of a cdk rises and falls with the concentration of cyclin. Cyclin levels rise during the S and G2 phases then fall abruptly in the M phase. MPF – maturation-programming factor – cyclin cdk complex that triggers a cells passage
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Eukaryotes are organisms whose cells are organized into complex structures by internal membranes and a cytoskeleton. The most characteristic membrane bound structure is the nucleus. This feature gives them their name‚ (also spelled "eucaryote‚") which comes from the Greek word referring to the nucleus. Animals‚ plants‚ fungi‚ and protists are eukaryotes. Microorganisms and all other living organisms are classified as prokaryotes or eukaryotes. Prokaryotes and eukaryotes are distinguished on the
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BioLab3 DNA Structure and Function Lab Report Student Name: I. DNA Structure Define the following terms: Purines A colorless crystalline compound with basic properties‚ forming uric acid on oxidation. Pyrimidines A colorless crystalline compound with basic properties; a substituted derivative of this‚ especially the bases thymine and cytosine present in DNA. Nucleotides A compound consisting of a nucleoside linked to
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P5 – Describe the Structure and Function of the Cardiovascular System Changes in Stroke Volume Stroke volume is the amount of blood pumped out the left ventricle‚ every beat your heart makes. It can differ from your resting heart beat and your heart beat when exercising. Normally‚ when exercising‚ your heart rate increases meaning the stroke volume also increases. The blood pumped by the left ventricle is oxygenated‚ and will deliver oxygen to the muscle. The more blood injected in a heartbeat means
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/ Beauty‚ Form and Function: An Exploration of Symmetry 1 TAN JUN RONG U1510605C 1 Writing Exercise – FePO4 Polymorphs Haines et al.‚ A neutron diffraction study of quartz-type FePO4: high-temperature behavior and α-β phase transition Z. Kristallogr. 218‚ 193-200 (2003). Paragraph 1 This writing exercise will be talking about how the structure of FePO4 will change from a low temperature of 294K to a high temperature of 1073K. There is a huge difference in both the cell parameters and atomic coordinates
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