Question: The bonds that hold two complementary strands of DNA together are _______.
Answer Options: A. Phosphodiester linkages B. Ionic bonds C. Peptide bonds D. Hydrogen bonds Correct Answer: D. Hydrogen bonds
Question: One common feature of all DNA polymerases is that they __________.
Answer Options: A. Synthesize DNA in the 5′ to 3′ direction B. Synthesize DNA in the 3′ to 5′ direction C. Do not require a primer D. Synthesize DNA in both directions by switching strands Correct Answer: A. Synthesize DNA in the 5′ to 3′ direction
Question: Which of the following proteins unwinds the double helix and breaks bonds that keep these strands together in order to do so?
Answer Options: A. DNA Polymerase III B. DNA Ligase C. DNA Polymerase I D. DNA Helicase E. Topoisomerase Correct Answer: D. DNA Helicase
Question: Which of the following DNA repair mechanisms is used to repair DNA damage?
Answer Options: A. DNA Polymerase III B. Mismatch repair C. Homologous recombination D. Non-homologous end joining Correct Answer: B. Mismatch repair
Question: The number of unpaired electrons found in an atom is called its __________.
Answer Options: A. Electronegativity B. Orbital C. Valence shell D. Valence Correct Answer: D. Valence
Question: The electronegativity of nitrogen (N) is less than the electronegativity of oxygen (O) and more than the electronegativity of hydrogen (H). Rank the electronegativity of carbon (C) based on the electronegativity of hydrogen (H) and nitrogen (N).
Answer Options: A. C < N < O B. C < H < N C. H < C < N D. H < N < C Correct Answer: C. H < C < N
Question: An acid is a proton donor while a base is a proton acceptor.
Answer Options: A. Donor B. Acceptor Correct Answer: True
Question: Two atoms are sharing electrons so they can fill their valence shells. Since they are sharing electrons, this is known as a (Select). One atom has 1 electron in its valence shell. In order to have a full valence shell, it donates it to another atom that could use an another electron in its valence shell. This complete transfer of an electron from one atom to another makes the two atoms involved charged. The opposite charges like to stick together and this is known as (Select).
Answer Options: A covalent bond An ionic bond Correct Answer: A covalent bond; An ionic bond
Question: The bonds that arise within a water molecule are known as ___________.
Answer Options: A. Covalent bonds B. Hydrogen bonds C. Ionic bonds D. Van der Waals interactions Correct Answer: A. Covalent bonds
Question: Which of the following is not a component of DNA?
Answer Options: A. 5′ carbon sugars B. Phosphate groups C. The pyrimidine, uracil D. The purine, adenine Correct Answer: C. The pyrimidine, uracil
Question: The bonds that hold two complementary strands of DNA together are _______.
Answer Options: A. Phosphodiester linkages B. Ionic bonds C. Peptide bonds D. Hydrogen bonds Correct Answer: D. Hydrogen bonds
Question: One common feature of all DNA polymerases is that they __________.
Answer Options: A. Synthesize DNA in the 5′ to 3′ direction B. Synthesize DNA in the 3′ to 5′ direction C. Do not require a primer D. Synthesize DNA in both directions by switching strands Correct Answer: A. Synthesize DNA in the 5′ to 3′ direction
Question: Which of the following proteins unwinds the double helix and breaks bonds that keep these strands together in order to do so?
Answer Options: A. DNA Polymerase III B. DNA Ligase C. DNA Polymerase I D. DNA Helicase E. Topoisomerase Correct Answer: D. DNA Helicase
Question: Which of the following DNA repair mechanisms is used to repair DNA damage?
Answer Options: A. DNA Polymerase III B. Mismatch repair C. Homologous recombination D. Non-homologous end joining Correct Answer: B. Mismatch repair
Question: The number of unpaired electrons found in an atom is called its __________.
Answer Options: A. Electronegativity B. Orbital C. Valence shell D. Valence Correct Answer: D. Valence
Question: The electronegativity of nitrogen (N) is less than the electronegativity of oxygen (O) and more than the electronegativity of hydrogen (H). Rank the electronegativity of carbon (C) based on the electronegativity of hydrogen (H) and nitrogen (N).
Answer Options: A. C < N < O B. C < H < N C. H < C < N D. H < N < C Correct Answer: C. H < C < N
Question: An acid is a proton donor while a base is a proton acceptor.
Answer Options: A. Donor B. Acceptor Correct Answer: True
Question: Two atoms are sharing electrons so they can fill their valence shells. Since they are sharing electrons, this is known as a (Select). One atom has 1 electron in its valence shell. In order to have a full valence shell, it donates it to another atom that could use an another electron in its valence shell. This complete transfer of an electron from one atom to another makes the two atoms involved charged. The opposite charges like to stick together and this is known as (Select).
Answer Options: A covalent bond An ionic bond Correct Answer: A covalent bond; An ionic bond