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- Which of the following is a class of molecules that encompasses all of the other molecules listed? a. triglycerides b. fatty acids c. waxes d. steroids e. lipids f. phospholipidsOf the organic molecules listed below, which group has the greatest variety of three-dimensional shapes? fatty acids DNA phospholipids carbohydrates proteinsOrganic molecules all contain carbon. Describe the structure and function of each of these organic molecules. carbohydrates, lipids, proteins, nucleic acids.
- Covalent and ionic bonds are the main features of nearly every biological molecule. Discuss how each of these bonds forms, and why they are so important in biological molecules.Which of the following statements is NOT true of biological organic molecules? None of the other four answers (all are true) They’re usually polymers formed from subunits (monomers) Their atoms are mostly or entirely covalently bonded Monomers are linked (bonded) together by hydrolysis (“water splitting”) Always contain hydrogen and carbonThe naturally-occurring amino acid L-serine (NH2-CH(COOH)-CH2-OH, dry form) shares all of the following features with the naturally-occurring amino acid D-serine, except: the same three-dimensional arrangement of covalent bonds the same stoichiometry the same number of covalent bonds the exact same atoms the same number of atoms
- Which of the following statements is NOT true of biological organic molecules? Their atoms are mostly or entirely covalently bonded None of the other four answers (all are true) Monomers are linked (bonded) together by hydrolysis ("water splitting") They're usually polymers formed from subunits (monomers) Always contain hydrogen and carbonThe “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.)List the four most common elements in organic molecules and state which common macromolecules always contain all four of these elements.
- Which of the following types of bonds are present in the primary structures of proteins? Covalent bonds, hydrogen bonds and dislufide linkages Ionic interactions Hydrogen bonds and covalent bonds Covalent bondWhich of the following bonds stores the greatest amount of chemical energy within a carbohydrate like glucose? O the O-H bond O the C-H bond O the carbonyl (C-O) bond O the C-O bondIdentify the elements that make up the following biomolecules. Write a yes or no in the box to indicate if the element is present or not. BIOMOLECULE carbohydrates proteins lipids carbon hydrogen nitrogen oxygen phosphorus nucleic acids