CHEM 210 Final Exam Questions With Answers Latest Update 2023/2024 (GRADED)

Nitrogen is called the superglue of the chemical world. FALSE True or False: Large elements, such as strontium, are common in biomolecules. FALSE True or False: The time it takes for a compound to flow through a metabolic pathway is called the payoff phase. FALSE True or False: Proteins, carbohydrates, and fats all get broken down into acetyl-CoA. TRUE True or False: A fat is a lipid molecule that is a solid at room temperature. TRUE In DNA, guanine always pairs with . Question 6 3 / 3 pts Question 1 3 / 3 pts Thymine Guanine Uracil Question 7 3 / 3 pts Question 8 3 / 3 pts Cytosine Both A and B CYTOSINE 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 Which of the following is the structure of ADP? B Question 10 3 / 3 pts Question 11 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 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] Which of the following is the enthalpy change of a reaction?