Pre-AP Biology Chapter 2 Test Chemistry of Life Multiple Choice (1 point each) Identify the choice that best completes the statement or answers the question. ____b 1. The space surrounding the nucleus of an atom contains |a. |protons. |c. |neutrons. | |b. |electrons. |d. |ions. | ____c
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Biology Worksheet i 1. Explain the process of pasteurization. Pasteurization is a process of heating a food, usually liquid, to a specific temperature for a definite length of time, and then cooling it immediately. This process slows microbial growth in food. The process was named after its creator, French chemist and microbiologist Louis Pasteur. The first pasteurization test was completed by Louis Pasteur and Claude Bernard on April 20, 1864. The process was originally conceived as a way of
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Stem Cells – Jason Hill There are over 200 different kinds of specialised cells that make up the human body such as nerve, muscle and skin cells. These specialised cells originate from stem cells, as stem cells are cells that are not yet specialised (Australian Stem Cell Centre, ASCC 2011). Stem Cells are mainly found in the neck region of the gastric glands. Stem cells have unique properties such as the ability to self-renew or specialise and make a different cell type and disperse themselves’
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The Endomembrane System A system of interconnected membranes (also known as the cytomembrane system) that fills the cell interior and connects the cell boundary with the double membraned organelles - nucleus, plastids and mitochondria. The phospholipid bilayer forms the basis for both outer and internal membranes. Thus while the Plasma Membrane, the outer-most cell membrane is an integral component of the cell boundary, its numerous convoluted protrusions into the cell interior and its connectivity
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BIOL 110 Principles of Biology Worksheet 7, Week 7 Answer the following questions on a separate sheet of paper and submit it to Dropbox 1 by midnight Central Time on Sunday. 1. What is the genetic material of organisms? 2. What are the requirements for DNA to be the genetic material? 3. Who can be credited with determining that DNA is the genetic material of living things? 4. What nucleotides are contained in DNA? 5. What is the difference between
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The equation of the reaction observed is: 2H2O2 (aq) → 2H2O (l) + O2 (g) The organelle involved in this experiment is peroxisomes. These small, membrane-enclosed, single membrane was found in plant cell and animal cell. The organelle contain variety of enzymes which involved in different metabolic reaction. Peroximoses were named because of its enzyme contains that usually remove hydrogen atoms from particular organic substrates with molecular oxygen. This oxidative reaction will produce hydrogen
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BIOLOGY I TUTORIAL 2 BASIC MOLECULES OF CELLS II (Source: Final examination, Dec 2012) Q1. (a) Amino acids are the building blocks of proteins. Figure 1.1 shows the dipeptide molecule. [pic] Figure 1.1 i) Briefly explain the formation of dipeptide from two amino acids. (3 marks) ii) Name the molecular unit that could determine the structure of a protein. (1 mark) (Source: Final examination
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the sun directly into electricity. Plant cells contains chloroplasts and absorbs light energy from the Sun. Plant growth and development are driven by continuous generation of new cells. (Inze, D. &DeVeylder, L. The plant cycle Annu.Rev Plant Biology, 54 235-236, 2006). There are several similarities in both cells. ATP in common in both plant cells and solar cells. ATP synthase is a ubiquitous membrane enzyme that plays a key role in biological energy metabolism. This enzyme interconverts two
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Cellular and Molecular Biology Question 1. i. How have Eukaryotic cells solved the problem of moving proteins and organelles from one part of the cell to another, faster than would occur by diffusion? And give a specific example to illustrate how a protein may be moved from part of the cell to another. The huge volume inside a eukaryotic cell is compartmentalized into a large number of bacterium-sized parts. Because eukaryotic cells are subdivided, the molecules required for specific chemical
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ULTRAVIOLET/VISIBLE SPECTROSCOPY PURDUE UNIVERSITY INSTRUMENT VAN PROJECT ANALYSIS OF PLANT PIGMENTS USING PAPER CHROMATOGRAPHY AND VISIBLE AND/OR UV SPECTROSCOPY (1-31-96) INTRODUCTION We have seen that all cells must constantly consume fuel molecules to maintain themselves, grow, and reproduce. Fuel molecules such as glucose constitute an immediate source of energy for biological work that can be released by catabolic cell processes. However it is necessary that life on earth have a constant source
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