Biology 1107 Chapter 3-4

What is the difference between unsaturated and saturated fats?

• Unsaturated - has double bonds

  Saturated - has single bonds

• Unsaturated - has single bonds

  Saturated - has double bonds

What are trans fats?

Are they a healthy alternative?

• Turning saturated fats into unsaturated fats, and yes

• Turning unsaturated fats into saturated fats, and yes

• Turning saturated fats into unsaturated fats, and no

• Turning unsaturated fats into saturated fats, and no

PART 1

The phospholipid bilayer is semi-permeable because the....

• Head is Hydrophilic

  AND

  Tail is Hydrophobic

• Head is Hydrophobic

  AND

  Tail is Hydrophilic

• Head is Hydrophobic

• Tail is Hydrophilic

The double bonds in unsaturated fats cause a bend in the structure of the molecule.

• True

• False

PART 2

The phospholipid bilayer is semi-permeable because....

• Nonpolar molecules are repelled by the hydrophobic lipids that line the inside of the bilayer. While polar molecular are not.

• Polar molecules are repelled by the hydrophobic lipids that line the inside of the bilayer. While nonpolar molecular are not.

• The tail has unsaturated & saturated hydrocarbon, so large molecules can diffuse through but small ones cannot.

• The tail has unsaturated & saturated hydrocarbon, so small molecules can diffuse through but large ones cannot.

What are the bonds in primary level of protein structure?

• Disulfide bonds, hydrogen bonds, ionic bonds, and hydrophobic interactions.

• Hydrogen bonds formed between atoms of the polypeptide backbone.

• Sequence of amino acids linked together to form a polypeptide chain. (peptide bonds)

• Subunits are held by the same bonds in tertiary level.

What are the bonds in secondary level of protein structure?

• Disulfide bonds, hydrogen bonds, ionic bonds, and hydrophobic interactions.

• Hydrogen bonds formed between atoms of the polypeptide backbone.

• Sequence of amino acids linked together to form a polypeptide chain. (peptide bonds)

• Subunits are held by the same bonds in tertiary level.

What are the bonds in tertiary level of protein structure?

• Disulfide bonds, hydrogen bonds, ionic bonds, and hydrophobic interactions.

• Hydrogen bonds formed between atoms of the polypeptide backbone.

• Sequence of amino acids linked together to form a polypeptide chain. (peptide bonds)

• Subunits are held by the same bonds in tertiary level.

What are the bonds in quaternary level of protein structure?

• Disulfide bonds, hydrogen bonds, ionic bonds, and hydrophobic interactions.

• Hydrogen bonds formed between atoms of the polypeptide backbone.

• Sequence of amino acids linked together to form a polypeptide chain. (peptide bonds)

• Subunits are held by the same bonds in tertiary level.

Which are the base pairs for DNA and RNA?

• DNA

  A - T

  G - C

  RNA

  A - T

  G - U

• DNA

  A - U

  G - C

  RNA

  A - T

  G - C

• DNA

  A - T

  G - U

  RNA

  A - T

  G - C

• DNA

  A - T

  G - C

  RNA

  A - U

  G - C