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    • #13751
      2001ChevyZ71
      Participant

      And before you ask, this is not due for homework, these are review questions to help me with my bio test. I have over 15 pages of typed questions, but these are giving me trouble.Thanks

      7. Explain how electron configurations influence the chemical behavior of an atom

      8. Write the equation for the dissociation of water, and explain what is actually transferred from one molecule to another

      10. Explain the basis for the pH scale

      11. Explain how acids or bases indirectly or directly affect the hydrogen ion concentration of a solution

      12. Using the bicarbonate buffer system as an example, explain how buffers work

      6. Describe the unique properties, building block molecules, and biological importance, of the three important groups of lipids; fats, phospholipids, and steroids

      1. List and recognize the four major components of an amino acid, and explain how amino acids may be grouped according to the physical and chemical properties of the side chains

      2. List the major components of a nucleotide, and describe how these monomers are linked together to form a nucleic acid

    • #101243
      JackBean
      Participant

      Pretty easy, isn’t it?

      quote 2001ChevyZ71:

      7. Explain how electron configurations influence the chemical behavior of an atom

      Well, that shows the basic chemical behaviour of each atom. If you know the configuration, you might pretty much guess how will it react.

      quote 2001ChevyZ71:

      8. Write the equation for the dissociation of water, and explain what is actually transferred from one molecule to another

      Is that really so hard? 🙄 2 H2O <=> H3O+ + OH- 🙄
      so, what is transferred? Hydrogen cation AKA proton.

      quote 2001ChevyZ71:

      10. Explain the basis for the pH scale

      Not much sure, what you mean by this. Basically, you have some dissociation equation and constant (as above) and from this by minus log you get the pH…

      quote 2001ChevyZ71:

      11. Explain how acids or bases indirectly or directly affect the hydrogen ion concentration of a solution

      🙄 really? What’s the definition of acids and of basis by Arrhenius?

      quote 2001ChevyZ71:

      12. Using the bicarbonate buffer system as an example, explain how buffers work

      OK, this might not be so hard (I’m not saying it is!). So, basically, you have HCO3- and either H2CO3 or (CO3)2- (depending on pH of solution). So, because it’s derived from weak acid, it will react with added protons from acid or release others if taken away by base.

      quote 2001ChevyZ71:

      6. Describe the unique properties, building block molecules, and biological importance, of the three important groups of lipids; fats, phospholipids, and steroids

      Look into any biochemical book (Stryer of Voet) or Wiki
      Fats – you probably mean triacylglycerols, thus based from three fatty acids and glycerol, hydrophobic, works as energy storage
      phospholipids – so, two fatty acids, glycerol, phosphoric acid and some other component (i.e. ethanolamine, serine etc.), amphiphillic, makes biological membranes
      steroids – well, made from steroids 😆 Rigid and mostly lipophillic, components of biological membranes, signaling molecules etc.

      quote 2001ChevyZ71:

      1. List and recognize the four major components of an amino acid, and explain how amino acids may be grouped according to the physical and chemical properties of the side chains

      Look into any biochemical book (Stryer of Voet) or Wiki
      OK? to be honest, I don’t know, which four components you mean. Like cyrboxyl group, amino group, hydrogen and side chain?
      Look into hydrophobic AAs, charged AAs (positive and negative), hydrophobic AAs, aromatic AAs, etc. (you can find different groups)

      quote 2001ChevyZ71:

      2. List the major components of a nucleotide, and describe how these monomers are linked together to form a nucleic acid

      Look into any biochemical book (Stryer of Voet) or Wiki
      nucleic basis, (deoxy)ribose, phosphate(s)
      by 3′->5′ diphosphoester linkage or something like that it’s called

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