EBIO 1210 EXAM 1 QUESTIONS WITH CORRECT ANSWERS
4 classes of large biological molecules -- Answer ✔✔ Proteins, Lipids, Nucleic Acid,
Carbohydrates
Predict the results of removing hydrogen atoms from the fatty acid tails of the saturated
fats -- Answer ✔✔ The number of carbon-carbon (C=C) double bonds in the fat
molecule increases and the fat becomes more fluid.
3 lipid subgroups -- Answer ✔✔ phospholipids (form biological membranes), fats (store
energy), steroids (hormones that regulate genes)
Building blocks of a fat -- Answer ✔✔ glycerol + 3 fatty acid tails
Saturated fat -- Answer ✔✔ -only single bonds
-exists as solid
-low(er) potential energy
-non polar & hydrophobic
Unsaturated fat -- Answer ✔✔ -single & double bonds
-exists as liquid
-high potential energy
-non polar & hydrophobic
The saturated fatty acid is saturated with the maximal number of -- Answer ✔✔
hydrogen atoms and C-H bonds
phospholipid -- Answer ✔✔ -phosphate group + glycerol + 2 fatty acid tails
-hydrophilic head & hydrophobic tails
non-polar bond -- Answer ✔✔ -high potential energy
-no charge
, -hydrophobic
-electrons loosely held
-atoms have similar or equal attraction for electrons
-Ex. Hydrocarbon, hydrogen gas, and methane
polar covalent bond -- Answer ✔✔ -low potential energy
-partial charge
-hydrophilic
-unequal sharing of electrons
-electrons tightly held
-atoms have high attraction for electrons
Monomer -- Answer ✔✔ A simple compound whose molecules can join together to
form polymers
Polymer -- Answer ✔✔ A long molecule consisting of many similar or identical
monomers linked together.
How is fat synthesized? -- Answer ✔✔ From Glycerol and Fatty Acids
Properties of Oxygen -- Answer ✔✔ -Partial negative charge
Properties of Carbon -- Answer ✔✔
Properties of Hydrogen -- Answer ✔✔ -diatomic
-forms lots of bonds
Hydrogen bond -- Answer ✔✔ -Partially negative O attracted to partially positive H
-weak bond
Non-polar covalent -- Answer ✔✔ -No charge
-Hydrophobic
-Equal sharing of electrons
-High potential energy
Polar covalent bond -- Answer ✔✔ -Partial charge
4 classes of large biological molecules -- Answer ✔✔ Proteins, Lipids, Nucleic Acid,
Carbohydrates
Predict the results of removing hydrogen atoms from the fatty acid tails of the saturated
fats -- Answer ✔✔ The number of carbon-carbon (C=C) double bonds in the fat
molecule increases and the fat becomes more fluid.
3 lipid subgroups -- Answer ✔✔ phospholipids (form biological membranes), fats (store
energy), steroids (hormones that regulate genes)
Building blocks of a fat -- Answer ✔✔ glycerol + 3 fatty acid tails
Saturated fat -- Answer ✔✔ -only single bonds
-exists as solid
-low(er) potential energy
-non polar & hydrophobic
Unsaturated fat -- Answer ✔✔ -single & double bonds
-exists as liquid
-high potential energy
-non polar & hydrophobic
The saturated fatty acid is saturated with the maximal number of -- Answer ✔✔
hydrogen atoms and C-H bonds
phospholipid -- Answer ✔✔ -phosphate group + glycerol + 2 fatty acid tails
-hydrophilic head & hydrophobic tails
non-polar bond -- Answer ✔✔ -high potential energy
-no charge
, -hydrophobic
-electrons loosely held
-atoms have similar or equal attraction for electrons
-Ex. Hydrocarbon, hydrogen gas, and methane
polar covalent bond -- Answer ✔✔ -low potential energy
-partial charge
-hydrophilic
-unequal sharing of electrons
-electrons tightly held
-atoms have high attraction for electrons
Monomer -- Answer ✔✔ A simple compound whose molecules can join together to
form polymers
Polymer -- Answer ✔✔ A long molecule consisting of many similar or identical
monomers linked together.
How is fat synthesized? -- Answer ✔✔ From Glycerol and Fatty Acids
Properties of Oxygen -- Answer ✔✔ -Partial negative charge
Properties of Carbon -- Answer ✔✔
Properties of Hydrogen -- Answer ✔✔ -diatomic
-forms lots of bonds
Hydrogen bond -- Answer ✔✔ -Partially negative O attracted to partially positive H
-weak bond
Non-polar covalent -- Answer ✔✔ -No charge
-Hydrophobic
-Equal sharing of electrons
-High potential energy
Polar covalent bond -- Answer ✔✔ -Partial charge
