Microbiology Home Assignment Student Name: Aisha Mohamed K-215810920 Lecturer Name: Dr. Faruk Sarkinfada Task 1: Describe the different classes of bacteria based on: a. Cell wall composition • :Gram negative . • Gram positive. b. Nutritional requirements : • Autotroghs:take nutrition from carbon dioxide. • Heterotrophs take the nutrition from organic carbon(carbs‚lipids‚protein) • Prototroph: take nutrition from sunlight. • Chemotrophic take nutrition from chemicals. c. Oxygen requirement
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bioJared Kerr Chapter 7 Section 2 I. Aerobic Respiration a. Overview of aerobic 1. Aerobic respiration has two major stages; the Krebs Cycle and the electron transport chain. 2. In the Krebs cycle‚ the oxidation of glucose that began with glycolysis is completed. 3. In the electron transport chain‚ NADH is use to make ATP. 4. In prokaryotes the reactions take place in the cytoeol. 5. In eukaryotes the reactions take place in the mitochondria. 6. The mitochondrial
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Muscular System: Muscle Metabolism 1. List the three roles of ATP in muscle contraction: 1. _Energize the power stroke of the myosin cross bridge. 2. _Disconnecting the myosin head from the binding site on actin at the conclusion of a power stroke. 3. _Energizing the calcium ion pump. 2. The potential energy in ATP is released when the terminal high-energy bond is broken by a process called hydrolysis. Write the end products of this process: ATP (+ H2O) (
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Define metabolism: The sum of all biological chemical reactions inside a cell or organism Differences in catabolism and anabolism: Catabolism is an enzyme-regulated chemical reaction that releases energy. Complex organic compounds such as glucose‚ amino acids‚ glycerol and fatty acids are broken down into simpler ones. The energy of catabolic reactions is used to drive the anabolic reactions. Anabolism is also enzyme regulated but requires energy for taking the simpler broken down components
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Question 1 2.5 out of 2.5 points The second law of thermodynamics holds that Answer Selected Answer: energy disperses spontaneously. Correct Answer: energy disperses spontaneously. Question 2 2.5 out of 2.5 points The minimum amount of energy needed to get a chemical reaction started is called the ___ energy. Answer Selected Answer: activation Correct Answer: activation Question 3 2.5 out of 2.5 points What happens to a molecule when it is phosphorylated? Answer Selected
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Chapter 5 Assignment 1. What is energy? What are the three forms of energy? Energy is the capacity to do work. There are four types of energy according to the powerpoint. They are Kinetic energy (energy of motion)‚ potential energy (stored energy)‚ thermal energy (heat)‚ and chemical energy (potential energy of molecules). 2. State the First and Second Laws of Thermodynamics. Include entropy in your explanation. The first law states that energy can neither be created nor destroyed it can
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Increased muscular activity results in a decreased partial pressure of oxygen‚ an increased partial pressure of carbon dioxide‚ a reduced PH‚ and an increased temperature. Consequently as much as 73% of the oxygen picked up by haemoglobin in the lungs is released in skeletal muscles during periods of physical exercise. Utilisation When we inhale air‚ oxygen is transported to the lungs and can be utilised by the body to stay alive. Oxygen is used to produce ATP for energy “the principle energy
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Associate Program Material Cell Energy Worksheet Answer the following questions: Cellular respiration: What is cellular respiration and what are its three stages? Cellular respiration is the complete cycle of a glucose molecule that happens to be using oxygen. The three stages of cellular respiration are: Glycosis‚ the Krebs cycle‚ and the electron transport chain. What is the role of glycolysis? Include the reactants and the products. Where does it occur? Glycolysis is the
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Cell Respiration & Photosynthesis BIO STUDY GUIDE (Ch. 9.1-9.5‚ 10.1-10.3) I) CELLULAR RESPIRATION A) Catabolic Pathways A.1) Fermentation: partial degradation of sugar that occurs w/o oxygen A.2) Cellular Respiration: oxygen is used A.3) Redox Reactions (Oxidation-Reduction that exchanges electrons) Oxidation: loss of electrons (energy must be added) Reduction: addition of electrons. (-) charged electrons added to atom reduce amount of (+) charge of that atom A.4) Stepwise Energy Harvest
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The first step in the steroidogenesis takes place within the mitochondria where CHOL becomes a substrate . The transport of free CHOL from the outer mitochondrial membrane to the inner mitochondrial membrane is facilitated by the steroidogenic acute regulatory protein (StAR). Within the mitochondria CHOL is converted to pregnenolone (PREG) by the side-chain cleavage enzyme known as CYP11A1. The conversion to PREG is the rate-limiting step and the following intermediate steps are taken place in the
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