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Bio 181 Final Exam Study Guide (nau)- Questions & Answers
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Bio 181 Final Exam Study Guide (nau)- Questions & Answers
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Bio 181 Final Exam Study Guide (nau)-Questions & Answers
dehydration reaction ANSWER-When water is removed and bond is put in place
hydrolysis ANSWER-When water is used to split the bond
Carbohydrates ANSWER-(sugars)
>monomer: monosaccharide
>most abundant sugar: glucose
>Polymer: polysaccharide
Lipids ANSWER->4 main molecules:
triglyceride
phospholipid
steroids
waxes
>fatty acids
>40% of organic molecules in human body
>H,C, some O
>hydrophillic and hydrophobic regions
>non-polar tails, insoluble in water
Proteins ANSWER->monomer: amino acids
>C,H,O, and N
>Polymer: polypeptide
, >amino and carboxyl group
Nucleic acids ANSWER->monomer: nucleotide
>DNA and RNA
>Polymer: polynucleotides
Give an example of an amphipathic lipid ANSWER-oils and fats
steroids ANSWER->ring instead of chain
>mostly hydrophobic, low solubility
>structural support, hormones , vitamins
>all steroid hormones are derived from cholestrol
lipid rafts: ANSWER-contain high concentrations of cholestrol and glucosphingolipids.
resistent to extraction w non ionic detergents
phospholipid bilayer ANSWER-hydrophillic head hydrophobic tail
cholestrol ANSWER-helps maintain fluidity by making sure the cell isnt too fluid or too
permeable to certain molecules.
hypertonic ANSWER-the cell has higher solute causing water to leave the cell
hypotonic ANSWER-lower solute water moves into the cell
passive transport ANSWER-the movement of materials across a cell membrane that uses
NO energy.
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