simple complex ion chemistry

LARGE CARBON MOLECULES Many carbon compounds are built up from smaller, simpler molecules known as monomers (MAH-ne-mers), such as the ones shown in Figure 3-3. As you can also see in Figure 3-3, monomers can bond to one another to form polymers (PAWL-eh-mer). A polymer is a molecule that consists of repeated, linked units. The units may be identical or structurally related to each other. Large polymers are called macromolecules. There are many types of macromolecules, such as carbohydrates, lipids, proteins and nucleic acids. Monomers link to form polymers through a chemical reaction called a condensation reaction. Each time a monomer is added to a polymer, a water molecule is released. In the condensation reac- tion shown in Figure 3-4, two sugar molecules, glucose and fruc- tose, combine to form the sugar sucrose, which is common table sugar. The two sugar monomers become linked by a C—O—C bridge. In the formation of that bridge, the glucose molecule releases a hydrogen ion, H, and the fructose molecule releases a hydroxide ion, OH. The OH and H ions that are released then combine to produce a water molecule, H2O. In addition to building polymers through condensation reac- tions, living organisms also have to break them down. The break- down of some complex molecules, such as polymers, occurs through a process known as hydrolysis (hie-DRAHL-i-sis). In a hydrolysis reaction, water is used to break down a polymer. The water molecule breaks the bond linking each monomer. Hydrolysis is the reverse of a condensation reaction. The addition of water to some complex molecules, including polymers, under certain con- ditions can break the bonds that hold them together. For example, in Figure 3-4 reversing the reaction will result in sucrose breaking down into fructose and glucose. 2H2O Monomers Polymer C C O H OH C OH H CH2OH C H CH2OH C HO H C O H C OH H C CH2OH H C H OH O Sucrose C C O H OH C OH H CH2OH C H CH2OH C HO H C OH OH H C OH H C CH2OH H C H OH O Glucose Fructose H2O The condensation reaction below shows how glucose links with fructose to form sucrose. One water molecule is produced each time two monomers form a covalent bond. FIGURE 3-4 monomer from the Greek mono, meaning “single or alone,” and meros, meaning “a part” Word Roots and Origins A polymer is the result of bonding between monomers. In this example, each monomer is a six-sided carbon ring. The starch in potatoes is an example of a molecule that is a polymer. FIGURE 3-3 Copyright © by Holt, Rinehart and Winston. All rights reserved. 54 CHAPTER 3 ENERGY CURRENCY Life processes require a constant supply of energy. This energy is available to cells in the form of certain compounds that store a large amount of energy in their overall structure. One of these com- pounds is adenosine (uh-DEN-uh-SEEN) triphosphate, more commonly referred to by its abbreviation, ATP. The left side of Figure 3-5 shows a simplified ATP molecule struc- ture. The 5-carbon sugar, ribose, is represented by the blue carbon ring. The nitrogen-containing compound, adenine, is represented by the 2 orange rings. The three linked phosphate groups, —PO4 , are represented by the blue circles with a “P.” The phospate groups are attached to each other by covalent bonds. The covalent bonds between the phosphate groups are more unstable than the other bonds in the ATP molecule because the phosphate groups are close together and have negative charges. Thus, the negative charges make the bonds easier to break. When a bond between the phosphate groups is broken, energy is released. This hydrolysis of ATP is used by the cell to provide the energy needed to drive the chemical reactions that enable an organism to function.

Based on the PowerPoint you shared, here is a simple quiz focusing on vocabulary, exponent laws, and identifying function types. --- Quiz: Exponent Laws & Rational Exponents (3.1–3.3) Multiple Choice (5 questions) Choose the correct answer. 1. In the expression 5^3, the number 3 is called the a) base b) power c) exponent d) coefficient 2. Which law of exponents would you use to simplify (x^2)^3? a) Product rule b) Quotient rule c) Power of a power rule d) Zero exponent rule 3. According to the zero exponent law, 7^0 = a) 0 b) 1 c) 7 d) undefined 4. If the first differences in a table of values are constant, the function is a) linear b) quadratic c) exponential d) not a function 5. Which expression is equivalent to \frac{2^5}{2^3}? a) 2^2 b) 2^8 c) 2^{15} d) 2^{-2} True or False (5 questions) Write T for true or F for false. 1. When multiplying powers with the same base, you add the exponents. 2. A negative exponent means the answer will always be negative. 3. For an exponential function, the ratios of consecutive y-values are constant. 4. The power 16^{\frac{1}{2}} is equal to 8. 5. The quotient rule for exponents says \frac{x^a}{x^b} = x^{a-b}. Completion (2 questions) Fill in the blank with the correct term. 1. The _____________ rule states that when raising a power to another power, you multiply the exponents. 2. If the second differences in a table of values are constant, the function is ______________. --- Answer Key Multiple Choice 1. c) exponent 2. c) Power of a power rule 3. b) 1 4. a) linear 5. a) 2^2 True or False 6. T 7. F (a negative exponent indicates a reciprocal, not a negative value) 8. T 9. F (16^{\frac{1}{2}} = \sqrt{16} = 4) 10. T Completion 11. power of a power (or power rule) 12. quadratic

Sentence completion sample test

Policy for Bloodborne Pathogen Exposure Incident as per OSHA regulation (29 CFR 1910.1030) Purpose: To ensure that ASC staff members are protected against potential exposure to bloodborne pathogens per OSHA regulations (29 CFR 1910.1030). Scope: This policy applies to all ASC staff members who may be exposed to blood or other potentially infectious materials during their duties. Policy: An exposure incident is defined as a specific eye, mouth, other mucous membranes, non-intact skin, or parenteral contact with blood or other potentially infectious materials that results from the performance of an employee's duties. Any spill or accident that results in an exposure incident must be immediately reported to the Infection Control Nurse, first-line leader, or another responsible person. The employer shall make available the hepatitis B vaccine and vaccination series to all employees who have occupational exposure and post-exposure evaluation and follow-up to all employees who have had an exposure incident. The employer shall provide a confidential medical evaluation and follow-up for the exposed employee, which shall include at least the following elements: • Documentation of the route(s) of exposure and the circumstances under which the exposure incident occurred. • Identification and documentation of the source individual, unless the employer can establish that identification is infeasible or prohibited by state or local law. The source individual's blood shall be tested as soon as feasible and after consent is obtained to determine HBV and HIV infectivity. • Collection and testing of blood for HBV and HIV serological status. • If the employee consents to baseline blood collection but does not consent to HIV serologic testing, the sample shall be preserved for at least 90 days. If, within 90 days of the exposure incident, the employee elects to have the baseline sample tested, such testing shall be done as soon as feasible • Post-exposure prophylaxis, when medically indicated, as recommended by the U.S. Public Health Service. • Counseling. • Evaluation of reported illnesses. The employer shall ensure that the healthcare professional evaluating an employee after an exposure incident is provided with the following: A copy of OSHA regulation 1910.1030 A description of the exposed employee's duties as they relate to the exposure incident Documentation of the route(s) of exposure and circumstances under which exposure occurred Results of the source individual's blood testing, if available. All medical records are relevant to the appropriate treatment of the employee, including vaccination status, which is the employer's responsibility to maintain. The employer shall obtain and provide the employee with a copy of the evaluating healthcare professional's written opinion within 15 days of the completion of the evaluation. The healthcare professional's written opinion for Hepatitis B vaccination shall include the following: Whether it is indicated for the employee If the employee has received such a vaccination The healthcare professional's written opinion for post-exposure evaluation and follow-up shall include the following: That the employee has been informed of the results of the evaluation That the employee has been told about any medical conditions resulting from exposure to blood or other potentially infectious materials which require further evaluation or treatment All other findings or diagnoses shall remain confidential and not be included in the written report. An employer must establish and maintain accurate medical records for each employee with occupational exposure. Records should include the employee's Name, hepatitis B vaccination status and dates, results of medical testing and follow-up procedures, healthcare professional's written opinion, and information provided to the healthcare professional. Records must be kept confidential and not disclosed without the employee's written consent, except as required by law. Records must be kept for at least the duration of the employee's employment plus 30 years. Form 7.041 Employee Consent Form for Testing for HBV and HIV Serological Status Following Accidental Exposure I, __________________________, understand that I have been involved in an accidental exposure incident and may be at risk for contracting Hepatitis B Virus (HBV) and Human Immunodeficiency Virus (HIV) under 29 CFR 1910.1030. Therefore, following OSHA standards, I am being offered the opportunity to be tested for these viruses. I understand that the testing will involve a blood sample and that the results will be kept confidential and will only be shared with authorized personnel. I also understand that testing is voluntary and that I have the right to refuse to test. By signing this form, I consent to be tested for HBV and HIV following the accidental exposure incident. Signed: __________________________ Patient's Name: __________________________ Form 7.042 Patient Consent Form for Testing for HBV and HIV Serological Status Following Accidental Exposure I, __________________________, understand that a staff member involved in an accidental exposure incident may be at risk for contracting Hepatitis B Virus (HBV) and Human Immunodeficiency Virus (HIV) following 29 CFR 1910.1030. Therefore, by OSHA standards, the staff member may be offered the opportunity to be tested for these viruses. I also understand that testing of my blood is necessary to determine if I am infected with HBV and HIV. The results will be kept confidential and only shared with authorized personnel. I understand that testing is voluntary and that I have the right to refuse to test. By signing this form, I consent to the staff member being tested for HBV and HIV and to my blood testing following the accidental exposure incident. Signed: __________________________ Form7.043 Refusal of Testing Patient/Employee (Circle One) I,_____________________________________, understand that I have the right to refuse testing for Hepatitis B Virus (HBV) and Human Immunodeficiency Virus (HIV) following an accidental exposure incident per 29 CFR 1910.1030. I understand that if I refuse to test, it may impact my ability to receive appropriate medical treatment and the healthcare facility's power to respond to the exposure incident. Following 29 CFR 1910.1030, The source individual's blood shall be tested as soon as feasible and after consent is obtained to determine HBV and HIV infectivity. The employer shall establish that legally required consent cannot be obtained if permission is not obtained. When the source individual's consent is not required by law, the source individual's blood, if available, shall be tested, and the results documented. Signed: __________________________

Simple & Complex Machines

VMDSR Online Test Series - TNPSC English Test 9 (TENSES&SIMPLE,COMPLEX,COMPOUND&DEGREES OF COMPARISON)

Simple and complex machines

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