Enzyme Inhibition Many drugs exert their action by inhibition of an enzyme activity in the body. If the activity of an enzyme is vital to the cell or organism‚ then inhibition may lead to death of the cell or organism. It is now possible to design new drugs which are enzyme inhibitors once a target enzyme has been identified. Types of Inhibitors A) Reversible Inhibitors: The effect of the inhibitor is instantaneous‚ and it can be removed from the enzyme by dialysis so that the enzyme activity
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proteins: • Storage of ions and molecules – myoglobin‚ ferritin • Transport of ions and molecules – hemoglobin‚ serotonin transporter • Defense against pathogens – antibodies‚ cytokines • Molecular motors – myosin‚ kinesin • Biological catalysis – chymotrypsin‚ lysozyme – Many more Interaction with Other Molecules • Reversible‚ transient process of chemical equilibrium: A + B AB A + B • A molecule that binds is called a ligand (typically a small molecule) • A region in the protein where the ligand
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SC/BIOL 2020.03 Biochemistry Midterm #1 Name: Student ID: Feb 7th‚ 2013 Time: 1 hr and 15 min This test has multiple choice: 24 Marks. Fill in the blanks: 10 Marks Peptide structure: 6 Marks There are a total of 10 pages of this exam. You are allowed to use a non-programmable calculator. For multiple choice: Choose the BEST answer and indicate your choice on the scantron. Please use a pencil. 1 1. Which of the following weak interactions is NOT due to differences in electrical
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1. Our digestive system provides the body a means to transfer nutrition from the external environment into the cellular level in order to sustain life. Salivary glands‚ controlled by the autonomic nervous system‚ are located in the oral cavity. Its main role is to secrete saliva in the oral cavity. There are three pairs of salivary glands. Parotoid savary gland lies under the skin on each side of the mandible. These glands secrete amylase‚ an enzyme that breaks down starches. The parotoid duct implies
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Question 1 | 2 points | Save | | A person’s blood pressure rises while walking up stairs. If homeostasis is maintained‚ which of the following will occur when the person reaches the top of the stairs? | | | | | | | | blood pressure will lower‚ causing the person to faint | | | blood pressure will return to near its level before walking up stairs | | | blood pressure will continue to rise‚ leading to hypertension | | | blood pressure will remain at the elevated
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Food Processing in Human Body System. Foods are very important to human body. According to Vittadini et al. (2001)‚ foods provide energy that isneeded for human in order to do daily activities. Besides that‚ food is important for growth and it supplies vitamins and minerals to repair any damage in human skin and also prevent the body to get illnesses easily (Vittadini et al.‚ 2001). Human body cannot use food that they eat directly until it is broken down into small molecules(Campbell et al
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3. List 4 abdominal organs that you observed. Describe their position relative to each other using correct anatomical terms. (Rachel Mindel) The pancreas is located in the upper abdomen‚ is posterior to the stomach and some parts are in between both the stomach and the spine. The right side of the organ which is called the head‚ is nestled in the curve of the duodenum (juncture where the stomach meets the first part of the small intestine). The tapered left side of the organ is called the body
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Formal Practical Report Tittle: Rat dissection Date: 16/10/2013 Partners: Sanketh Yadav and Joel Chittiprolu 8C Aim: To investigate the rat’s digestive system and compare the differences and similarities of the organs with the Human’s digestive system and measure them. Materials/ Equipment: Lab court Nitrile Safety Gloves Camera or Phone to take pictures Scissors Probe Scalpel Rulers Nails Bench Plastic bag for excreting waste Eucalyptus Room spray Newspapers for keeping
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Unit 1. Homeostasis and Integument 1. Define what is meant by homeostasis in living systems a. Homeostasis = Body wisdom ↓ ↓ Steady state * Homeostasis keeps us healthy * The means by which organisms (our body) maintain a constant internal environment in spite of fluctuations in the external environment. * This means humans have narrow limits we have to keep. 1. Body temp 2. Water content * Our blood contains 92% water and has to maintain
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6 primary functions of digestive system: 1. Ingestion- food intake 2. Secretion 3. Digestion- mechanical & chemical breakdown of food Mechanical Mastication- first step. Enables mixing with saliva to form bolus to be swallowed. Regulated by CNS. Deglutition Mixing/Churning Peristalsis- movement of muscles within GI tract that facilitates movement of food Chemical- Hydrolysis (using H2O) of macromolecules into monomers (residues) carried out by digestive enzymes produced by salivary glands
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