molecules are the major structural components of the cell membrane? A) phospholipids and cellulose B) nucleic acids and proteins C) phospholipids and proteins D) proteins and cellulose E) glycoproteins and cholesterol For the following questions‚ match the labeled component of the cell membrane (Figure 7.1) with its description. [pic] Figure 7.1 5) peripheral protein 6) cholesterol 9) glycolipid 11) The presence of cholesterol in the plasma membranes of some animals
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The chemistry of life Cell chemistry is hierarchical Inorganic precursors Small organic molecules Macromolecules Supramolecular structures Organelles/structures Cell BIO 1140 – SLIDE 1 Review of macromolecules Carbohydrates Polymers of monosaccharides (polysaccharides) Energy storage Structural chitin starch glycogen Purple pages F23 cellulose BIO 1140 – SLIDE 2 http://www.mpie.de/index.php?id=2957 Monosaccharides CnH2nOn n = 3 to 7 Trioses‚ pentoses and hexoses
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Enzymes Enzymes are… * Biological catalysts Lower the energy level needed for a biochemical reaction to occur. This energy level is called activation energy. * Proteins Polypeptide chains made up of 100’s-1000’s of amino acids in a specific sequence. * Do not get “used up” in a reaction The number of “uses” of an enzyme depends on the enzyme. * Work more efficiently at certain optimum temperatures. * They are “reaction-specific”. Each enzyme is included in one reaction.
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of a reducing sugar with the saliva in it. Adding on‚ another part of the objective is to determine the effect of amylase on starch. For the Chemical Aspects lab‚ the objectives were to test for the presence or absence of carbohydrates‚ lipids and proteins in several test samples. In the starch test‚ the objective was to find the substances that contain starch. In the starch test‚ iodine was used. In the reducing sugar test‚ the objective was to find the test materials that have a reducing sugar. In
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which looks at one’s level of glucose over the past three months. In addition‚ an albumin and pre-albumin level should be obtained to look at the amount of protein in your body. If levels such as glucose or white blood cells are high healing will be delayed. On the other hand‚ if one’s hemoglobin and hematocrit are low‚ the wound may not receive the oxygen rich blood it needs. If the pre/albumin is low the protein needed to promote wound healing is not available (Ahmed‚ 2016). Corrective measures
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The liquid portion of the blood; the cells c) Lacking in protein; regulators of blood osmolality d) The cellular portion of blood; acellullar components e) The liquid portion of the blood; acellular components 2. Which of the following plasma proteins is most abundant? a) Albumin b) Globulins c) Fibrinogen d) Immunoglobulins e) Plasmin 3. The plasma component that forms the insoluble fibrous protein in a blood clot is: a) Sodium b) Albumin c) Globulin d) Fibrinogen e) Immunoglobulins 4. Which of
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Harmful effects I. Allergy The first harmful effect we concerned is Allergy. Allergenicity is the protein product of the transferred gene. Usually‚ infants and young children are more commonly affected by food allergies than aduIntroducing a gene into a plant causes allergic reaction. For example‚ incorporating Brazil Nuts gene into soybean may cause allergic reaction. 2S albumin is an allergen in Brazil
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order for the researcher to gain an understanding of enzymes in how they work‚ and the relative speed at which they carry out their processes. Before it was conducted‚ the scientist had very limited knowledge of the proteins‚ so
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yourself for use during class discussions. It is suggested that you type your answers on the computer to improve legibility. 1. What are the nutrients needed to sustain life? Protein‚ carbohydrates‚ lipids‚ water‚‚ minerals‚ and vitamins. 2. Which can produce energy and why? lipids and carbohydrates and proteins. The chemical makeup allows the nutrients to be converted to energy. List the four functions of water and briefly explain each function. its two most important functions are
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Enzymes are protein‚ they are used to catalyse metabolisms in all organisms. They break down complex molecules and build up complex molecules from simple molecules‚ these two processes are catabolic reaction and anabolic reaction respectively. Enzymes are needed in these two processes to catalyse releasing and taking up ATP molecules. Different sequence of amino acid produces different structure of protein‚ which determines the property of protein‚ thus each kind of enzymes has its unique active
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