Which of the following bond/s results from a sharing of electron(s) between atoms ? [MA} ionic bond O polar covalent bond non-polar covalent bond O hydrogen bond O hydrolysis
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- What kinds of bonds often control the shape (or tertiary form) of large molecules such as proteins? a. hydrogen b. ionic c. covalent d. inert e. singleEach carbon atom can bond with as many as _________ other atoms.An ________ can help keep the pH of a solution stable. a. covalent bond c. buffer b. hydrogen bond d. free radical
- When atoms with the same or similar electronegativities are bonded together, they pull on electrons O equally and form an ionic bond O unequally and form an ionic bond O equally and form a polar covalent bond O unequally and form a polar covalent bond O equally and form a nonpolar covalent bond O unequally and form a nonpolar covalent bondWhich 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.A bond linking two atoms of the same element through an equal sharing of electrons would be best defined as a Polar Covalent Bond O Nonpolar lonic Bond O Hydrogen Bond O Nonpolar Covalent Bond
- What tertiary interaction would be expected between the following amino acids HN- OH HN- CH- OH CH-CH, covalent bond electrostatic attraction O hydrogen bonding O hydrophobic O no tertiary interaction expectedThe “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.)H B H H A H H What do we call the bonds labelled A and B? Covalent bond, hydrogen bond Hydrogen bond, ionic bond lonic bond, covalent bond Hydrogen bond, covalent bond H
- Which is responsible for the stabilization of parallel polypeptide chains in a beta-pleated sheet conformation? Van der Waals O covalent bonding O R-group interactions H-bondingMatch the following sentences with their lipid group. Fatty acids Steroids Long chain of C atoms with carboxylic acid Can be cis or trans Three form triglycerides Cholesterol is the most important Can be saturated or unsaturated with H Estrogen, progesterone, and testerone Used to make soap Can be changed through hydrogenation Cyclic hydrocarbon nucleus with side groups Answer Bank Incorrect The following amine acids are given. он CH3 O *H,N-bH- Serine Alanine Draw serylalanine. (condensed structure, geometry does not matter) H,N - CH, CH, CH IncorrectWhich of the following is NOT a force involved in tertiary structure? O salt bridges O polar interactions nonpolar interactions O backbone hydrogen bonding