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Portage Learning CHEM 210 FINAL EXAM - 2022

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Question 1 3 / 3 pts True or False: Nitrogen is called the superglue of the chemical world. FALSE Question 2 3 / 3 pts True or False: Large elements, such as strontium, are common in biomolecule s. FALSE Question 3 3 / 3 ...

Question 1 3 / 3 pts True or False: Nitrogen is called the superglue of the chemical world. FALSE Question 2 3 / 3 pts True or False: Large elements, such as strontium, are common in biomolecule s. FALSE Question 3 3 / 3 pts True or False: The time it takes for a compound to flow through a metabolic pathway is called the payoff phase. FALSE Question 4 3 / 3 pts True or False: Proteins, carbohydrates, and fats all get broken down into acetyl-CoA. TRUE Question 5 3 / 3 pts True or False: A fat is a lipid molecule that is a solid at room temperature. TRUE Question 6 3 / 3 pts In DNA, guanine always pairs with ________. Thymine Guanine Uracil Cytosine Both A and B CYTOSINE Question 7 3 / 3 pts Water is considered a polar solvent due to attractive forces known as hydrogen bonds. A hydrogen bond is __________. A bond that is stronger than a covalent bond An attractive force between molecules where partially positive hydrogen atoms are attracted to partially negative atoms of F, O, or N. The polar O–H bond in water An ionic bond between H and another atom A covalent bond between H and O AN ATTRACTIVE FORCE BETWEEN MOLECULES WHERE PARTIALLY POSITIVE HYDROGEN ATOMS ARE ATTRACTED TO PARTIALLY NEGATIVE F, O, OR N Question 8 3 / 3 pts Which of the following is the structure of ADP? B Question 9 3 / 3 pts Water is a unique molecule. Which of the following contributes to water’s unique place in the chemical world? The geometry of the molecule The polarity of the O-H bonds The ability of water molecules to hydrogen bond The bond angle of water All of the answers are correct ALL ANSWERS ARE CORRECT Question 10 3 / 3 pts Scientific Calculator The H+ concentration of a solution is 7.9 x 10-13 M. What is the pH? -6.70 6.70 11.17 -12.1 12.1 12.1 [ [H+]=7.9 x 10-13; pH=-log[7.9 x 10-13]= 12.1] Question 11 3 / 3 pts Which of the following is the enthalpy change of a reaction? A) ΔG B) ΔS C) ΔH D) ΔF E) None of the above C Question 12 3 / 3 pts The following is what type of protein secondary structure? Alpha helix Beta turn Parallel beta sheet Anti-parallel beta sheet

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