Homework Answers
EDTA - Chelating Agent
Many enzymes require metal ion for their activity. Metal ion may either donate or accept electrons in an enzymatic reaction. It is important to carry out catalytic reaction. In nucleic acid extraction process, EDTA is used as chelating agent to chelate metal ions. So that RNAse and DNAse can be inhibited and prevent degradation of RNA and DNA.
SDS - Disrupts Cell Membrane
Sodium dodecyl sulfate (SDS) is an anionic detergent. It has a negative charge. They are surfactants because they decrease the surface tension of water. SDS totally disrupts membrane proteins and lipids by breaking interactions.
Sodium Hydroxide (NaOH) - Increases pH
Sodium Hydroxide is a strong base with pH 12. In water, it dissociates to produce Na+ and OH- ions. It decreases the hydrogen ion concentration and increase basicity. Thus increase the pH.
Sodium Acetate (CH3COONa) - Decreases pH
Sodium Acetate is a salt of weak acid. In water, Sodium Acetate dissociates in Ch3COO- and Na+ ions. Salt of weak acid and strong base added to water will result in acidic solution. Thus, it decreases pH.
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Partial Question 5 0.5/2 pts Match up the right answers. EDTA decreases pH, renatur SDS disrupts...
0/1pts rrect Question 4 What changes with temperature? Choose two (2) answers mole fraction 0.5/1 pts Partial Question 11 Match the term with the example. water nonvolatile NaCI nonvolatile 0/...
0/1pts rrect Question 4 What changes with temperature? Choose two (2) answers mole fraction 0.5/1 pts Partial Question 11 Match the term with the example. water nonvolatile NaCI nonvolatile 0/1 pts Question 20 rect Vapor Pressure Lowering (Raoult's Law) Link e 2 Match the color of the substance with the best term blue (smaller in size) onvolatile solute purple/red
0/1pts rrect Question 4 What changes with temperature? Choose two (2) answers mole fraction
0.5/1 pts Partial Question 11 Match the...
Am I right? Question 4 4 pts Choose the correct answers from the dropdown menus: As...
Am I right?
Question 4 4 pts Choose the correct answers from the dropdown menus: As you gradually add KOH (a strong base) to glycine (a weak acid) during the titration, the following happens: as the pH in the beaker increases . the proton concentration decreases ; therefore, the alpha- carboxy group goes from neutral to charged, while the alpha- amino goes from charged to neutral.
Partial Question 7 0.38/0.5 pts Consider the following general electrolytic cell: Power supply Molten MX 1....
Partial Question 7 0.38/0.5 pts Consider the following general electrolytic cell: Power supply Molten MX 1. At which electrode does oxidation occur? left electrode 2. At which electrode does elemental M form? left 3. At which electrode are electrons being released by ions? left electrode 4. At which electrode are electrons entering the cell? right electrode
0.5/1 pts Partial Question 3 Read the "Chemical Insights: Fireworks" essay within Ch 12 of the...
0.5/1 pts Partial Question 3 Read the "Chemical Insights: Fireworks" essay within Ch 12 of the Zumdahl textbook. Which of the following substances produce bright yellow emissions that can mask other emission colors? Two of the answer choices below are correc...select the two correct answers. (Grading Note: for this type of question, Canvas will award points for correct selections and deduct points for incorrect selections.) sodium salts carbon-based fuels magnesium salts aluminum salts 0.75/1.5 pts Partial Question 4 Which of...
Question 3 0.5 pts Match the following for oogenesis and spermatogenesis. begins in the embryo [Choose...
Question 3 0.5 pts Match the following for oogenesis and spermatogenesis. begins in the embryo [Choose ] continuous throughout life; prolific [Choose ] Spermatogenesis Both oogenesis & spermatogenesis Oogenesis 1 primary cell produces 4 viable cells [Choose] Meiosis I is arrested at prophase I until puberty [Choose] begins at puberty [Choose ] production of gametes through meiosis [Choose ] [Choose] at puberty, 1 primary cell goes through meiosis I and is arrested at Meiosis II (metaphase) 1 primary cell produces...
D Question 17 5 pts Any expression can be written as a power series. Match-up them....
D Question 17 5 pts Any expression can be written as a power series. Match-up them. 1. 1+2 A (-1)" zdania 2n+1 Bona"-1 1 3. C.E. (-22)" D. 2x", 12 <1 4. tan- 1 Choose) 2 Choose] 3 [Choose [Choose)
please answer sll questions, i have to keep reposting due to partial answers 26-53 26-30. Determine...
please answer sll questions, i have to keep reposting due to
partial answers 26-53
26-30. Determine the relationship in the following pairs of compounds HC CH.CH CH, CH,CH2 CH2CH2CH3 A) same molecule B) structural isomers C) Enantiomers D) not related E) geometrical (cis/trans) isomers H CH₃CH₂ H CH₂ CHO OOH / CH2OH CH OH - HOH HOH HoH HOH HOH HOH H-OH HOH CH2OH CH OH 2 28. HD HO-C-H H-C-OH CH2OH 29 CH2OH 31-35. Match the number to the...
Question 1 5 pts - What is the purpose of melting point? All the answers To...
Question 1 5 pts - What is the purpose of melting point? All the answers To check the purity of solids To check identity of unkown solids To publish for new solids for future characterization Question 2 5 pts How does impurity change melting point value and range? increase-narrowing decrease-narrowing decrease-broadening O increase-broadening Question 3 5 pts What is the reason of an impurity affecting melting point of a solid? Watch Mel. Point Theory video. Not known Obc it weakens...
Question 1 5 pts - What is the purpose of melting point? All the answers To...
Question 1 5 pts - What is the purpose of melting point? All the answers To check the purity of solids To check identity of unkown solids To publish for new solids for future characterization Question 2 5 pts How does impurity change melting point value and range? increase-narrowing decrease-narrowing decrease-broadening O increase-broadening Question 3 5 pts What is the reason of an impurity affecting melting point of a solid? Watch Mel. Point Theory video. Not known Obc it weakens...
Question 2 0/1 pts Marfan syndrome is a dominant disorder. Choose all possible genotype(s) for those...
Question 2 0/1 pts Marfan syndrome is a dominant disorder. Choose all possible genotype(s) for those afflicted by this disorder. mm Mm MM Partial Question 4 1.67 /2 pts Match the phenotypes on the left with the correct genotypes on the right. A lower case 'c' denotes the colorblind allele. Normal male XY Colorblind male XcY Carrier male none Normal female XX Colorblind female XcXc Carrier female XcXc Partial Question 5 0.5/1 pts If Xc denotes the colorblindness allele and...
0/1pts rrect Question 4 What changes with temperature? Choose two (2) answers mole fraction 0.5/1 pts Partial Question 11 Match the term with the example. water nonvolatile NaCI nonvolatile 0/1 pts Question 20 rect Vapor Pressure Lowering (Raoult's Law) Link e 2 Match the color of the substance with the best term blue (smaller in size) onvolatile solute purple/red
0/1pts rrect Question 4 What changes with temperature? Choose two (2) answers mole fraction
0.5/1 pts Partial Question 11 Match the...
Am I right?
Question 4 4 pts Choose the correct answers from the dropdown menus: As you gradually add KOH (a strong base) to glycine (a weak acid) during the titration, the following happens: as the pH in the beaker increases . the proton concentration decreases ; therefore, the alpha- carboxy group goes from neutral to charged, while the alpha- amino goes from charged to neutral.
Partial Question 7 0.38/0.5 pts Consider the following general electrolytic cell: Power supply Molten MX 1. At which electrode does oxidation occur? left electrode 2. At which electrode does elemental M form? left 3. At which electrode are electrons being released by ions? left electrode 4. At which electrode are electrons entering the cell? right electrode
0.5/1 pts Partial Question 3 Read the "Chemical Insights: Fireworks" essay within Ch 12 of the Zumdahl textbook. Which of the following substances produce bright yellow emissions that can mask other emission colors? Two of the answer choices below are correc...select the two correct answers. (Grading Note: for this type of question, Canvas will award points for correct selections and deduct points for incorrect selections.) sodium salts carbon-based fuels magnesium salts aluminum salts 0.75/1.5 pts Partial Question 4 Which of...
Question 3 0.5 pts Match the following for oogenesis and spermatogenesis. begins in the embryo [Choose ] continuous throughout life; prolific [Choose ] Spermatogenesis Both oogenesis & spermatogenesis Oogenesis 1 primary cell produces 4 viable cells [Choose] Meiosis I is arrested at prophase I until puberty [Choose] begins at puberty [Choose ] production of gametes through meiosis [Choose ] [Choose] at puberty, 1 primary cell goes through meiosis I and is arrested at Meiosis II (metaphase) 1 primary cell produces...
D Question 17 5 pts Any expression can be written as a power series. Match-up them. 1. 1+2 A (-1)" zdania 2n+1 Bona"-1 1 3. C.E. (-22)" D. 2x", 12 <1 4. tan- 1 Choose) 2 Choose] 3 [Choose [Choose)
please answer sll questions, i have to keep reposting due to
partial answers 26-53
26-30. Determine the relationship in the following pairs of compounds HC CH.CH CH, CH,CH2 CH2CH2CH3 A) same molecule B) structural isomers C) Enantiomers D) not related E) geometrical (cis/trans) isomers H CH₃CH₂ H CH₂ CHO OOH / CH2OH CH OH - HOH HOH HoH HOH HOH HOH H-OH HOH CH2OH CH OH 2 28. HD HO-C-H H-C-OH CH2OH 29 CH2OH 31-35. Match the number to the...
Question 1 5 pts - What is the purpose of melting point? All the answers To check the purity of solids To check identity of unkown solids To publish for new solids for future characterization Question 2 5 pts How does impurity change melting point value and range? increase-narrowing decrease-narrowing decrease-broadening O increase-broadening Question 3 5 pts What is the reason of an impurity affecting melting point of a solid? Watch Mel. Point Theory video. Not known Obc it weakens...
Question 1 5 pts - What is the purpose of melting point? All the answers To check the purity of solids To check identity of unkown solids To publish for new solids for future characterization Question 2 5 pts How does impurity change melting point value and range? increase-narrowing decrease-narrowing decrease-broadening O increase-broadening Question 3 5 pts What is the reason of an impurity affecting melting point of a solid? Watch Mel. Point Theory video. Not known Obc it weakens...
Question 2 0/1 pts Marfan syndrome is a dominant disorder. Choose all possible genotype(s) for those afflicted by this disorder. mm Mm MM Partial Question 4 1.67 /2 pts Match the phenotypes on the left with the correct genotypes on the right. A lower case 'c' denotes the colorblind allele. Normal male XY Colorblind male XcY Carrier male none Normal female XX Colorblind female XcXc Carrier female XcXc Partial Question 5 0.5/1 pts If Xc denotes the colorblindness allele and...
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