Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 2, Problem 3VCQ
Figure 2.24 Which of the following statements is
false?
- Molecules with the formulas CH3CH2COOH and C3H6O2 could be structural isomers.
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Students have asked these similar questions
Structural isomers, like leucine and isoleucine, differ from each other in which of the following ways?
they have different numbers of atoms, but the same 3-dimensional arrangements of covalent bonds
they have different stoichiometric formulas, but the same number of covalent bonds
they have different atoms, but the same number of covalent bonds
they have different covalent bonds, but the same stoichiometric formulas
they have different numbers of atoms, and different 3-dimensional arrangements of covalent bonds
The dihedral or torsion angles of polypeptide backbone, the allowed values of which are summarized by the Ramachandran diagram, refer to rotation of the following pair of bonds.
Cα-N and Cα-R
C=O and Cα-N
C-N and Cα-C
Cα-C and Cα-N
Cα-R and Cα-C
The “octet rule” in chemistry helps predict the types of bonds thatatoms will form. In general, an atom will be most stable if it fills itsouter shell of 8 electrons. Atoms with fewer than 4 valence electronstend to donate electrons and those with more than 4 valence electronstend to accept additional electrons; those with exactly 4 can do both.Using this rule, determine what category each of the followingelements falls into: N, S, C, P, O, H, Ca, Fe, and Mg. (You will needto work out the valence of the atoms.)
Chapter 2 Solutions
Biology 2e
Ch. 2 - Figure 2.3 How many neutrons do carbon-12 and...Ch. 2 - Figure 2.7 An atom may give, take, or share...Ch. 2 - Figure 2.24 Which of the following statements is...Ch. 2 - If xenon has an atomic number of 54 and a mass...Ch. 2 - Atoms that vary in the number of neutrons found in...Ch. 2 - Potassium has an atomic number of 19. What is its...Ch. 2 - Which type of bond represents a weak chemical...Ch. 2 - Which of the following statements is not true?...Ch. 2 - When acids are added to a solution, the pH should...Ch. 2 - We call a molecule that binds up excess hydrogen...
Ch. 2 - Which of the following statements is true? Acids...Ch. 2 - Each carbon molecule can bond with as many as...Ch. 2 - Which of the following is not a functional group...Ch. 2 - What makes ionic bonds different from covalent...Ch. 2 - Why are hydrogen bonds and van der Waals...Ch. 2 - Discuss how buffers help prevent drastic swings in...Ch. 2 - Why can some insects walk on water?Ch. 2 - What property of carbon makes it essential for...Ch. 2 - Compare and contrast saturated and unsaturated...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- As the image asks, which of these is L-isoleucine?arrow_forwardIn an ammonia molecule, one nitrogen atom (atomic number = 7; 1s² 2s²2p³) forms covalent bonds with three hydrogen atoms. Draw a diagram of an ammonia molecule. Show all valence electrons, lone pairs, molecular geometry, and partial charges (assume sp³ hybridization).arrow_forwardWhich of these statements about the tertiary structure of a polypeptide is(are) untrue? You may select more than one answer. The tertiary structure will be maintained when the solvent is changed from pure water to aqueous acetic acid. O The tertiary structure is determined in part by the formation of disulfide bridges. Hydrogen bonding interactions are responsible for formation of secondary structure but not tertiary structure, O The tertiary structure is rigid and unchanging. O Charge-charge (electrostatic) interactions can be important in the tertiary structure.arrow_forward
- Compound P was discovered by a scientist. Compound P is a dipeptide, optically active and has the molecular formula C„H14N2O3. Compound P is formed when compound Q and compound R joined together by condensation reaction. While, monomers S and T are formed by modifying the compounds Q and R. Polymer U is formed by the condensation reaction of monomers S and T. Draw the possible structural formulae of compounds P, Q, R, S, T and U. Label the peptide bond(s) for compound P. Draw the possible structural formulae for repeating unit of polymer U. Please state the number of functional groups present in compound P.arrow_forward:0-H-1--:N-H Hydrogen Bond Which statement best helps explain the formation of the hydrogen bond represented in the figure? A The oxygen has a partial positive charge, and the nitrogen has a partial negative charge. (B) The nitrogen has a partial negative charge, and the hydrogen attached to the oxygen has a partial positive charge.arrow_forwardwhich of the following functional groups are present in this molecule? amine amide amino acid keytone ether could you also identify this molecule?arrow_forward
- How many of the carbons in the following structure are stereocenters?arrow_forwardWhich of the functional groups listed in shown Table can function as hydrogen bond donors? As hydrogen bond acceptors?arrow_forwardThe figure below illustrates the molecular structures of two fatty acids. A B H₂C The structural formula of erucic acid and behenic acid с H₂C D erucic acid behenic acid Which of the following best explains why erucic acid is liquid at room temperature but behenic acid is solid at room temperature? O OH The presence of a double carbon to carbon bond in erucic acid prevents the molecule from packing closely together. The lack of any double carbon-carbon bonds in behenic acid causes the molecule to be come polar and therefore packed more tightly. The larger number of carbon atoms in erucic acid prevents the molecule from packing tightly together. OH The smaller number of carbon atoms in behenic acid creates stronger covalent bonds between the carbon atoms allowing for them to pack more tightly together.arrow_forward
- Consider the following Newman projection: CH3 Br CH3 Br Br What word or two-word phrase describes this conformation? How many Br atoms are eclipsed by the CH3 group on the front carbon? How many CH3 groups are gauche to the CH3 group on the front carbon? How many Br atoms are anti to the CH3 group on the front carbon? ☐ ☐ ☐arrow_forwardwhich of the bonds in the molecule below are polar. explain why.arrow_forward1.)Draw 2,2‑dimethylbutane. Show all hydrogen atoms. 2.)Draw 3‑ethylhexanoic acid. Draw the structure in line‑bond form.arrow_forward
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