WELL DETAILED VERIFIED ANSWERS|GRADED A+|NEWEST
Fatty acids can naturally be saturated or unsaturated. A saturated fatty acid has - AN-
SWER .
All single covalent bonds
Fats and oils are composed of - ANSWER Fatty acids and glycerol
Triglycerides, a type of fat, are composed of what two subunits? - ANSWER Fatty acids
and glycerol
What would you have to do to make a fat from the fatty acid shown above? - ANSWER
Attach it to a glycerol along with two other fatty acids.
What kinds of molecules are the major fuel for the salmon's long trip? - ANSWER Triglyc-
erides (fats / oils)
If one or more of the fatty acids in a triglyceride include omega-3 fatty acids, what can you
predict about this substance at room temperature? - ANSWER It is a liquid oil
Based on your knowledge of the structure of triglycerides, what products would you expect
to result from the complete hydrolysis of a fat molecule? More than one is correct. - AN-
SWER Fatty acids and glycerol
The blubber layer helps insulate mammals and birds that live in cold water; fat does not con-
duct heat very quickly. Applying what you know about lipids, what is the main advantage of
covering feathers or fur in oil? - ANSWER Oil sheds water and keeps underlying layers of
fur or downy feathers dry.
1
, Highly simplified diagram of a membrane's structure is made up of - ANSWER Phospho-
lipids
Another type of lipid that composes cells are called phospholipids. Phospholipids differ from
other lipids because they - ANSWER Contains a hydrophobic and hydrophilic end
Ions of salt (sodium, NA+, and chloride, Cl−) are highly hydrophilic. Will they easily pass
through the layer to enter or leave a cell? - ANSWER No.
Which part of the molecules is hydrophilic? - ANSWER The heads
Below is an image of the smallest amino acid: Glycine. What does each line in the picture of
the amino acid represent? - ANSWER A shared pair of electrons in a covalent bond.
What are molecules? - ANSWER Molecules are made of atoms
A peptide is built so that the red amino acid is glutamic acid and the blue amino acid is ly-
sine. How will these amino acids respond to each other? - ANSWER These amino acids
are charged and will attract each other
The amino acid chain of a protein is held together by - ANSWER Covalent bonds
If the protein is mainly structural and needs to maintain a stable, rigid form, which bonds
would it use? - ANSWER Covalent bonds
If the protein needs to be flexible, with bonds that easily break and reform, which bonds
would it use? - ANSWER Hydrogen
Water molecules binding to each other is called a - ANSWER Cohesion
2
Fatty acids can naturally be saturated or unsaturated. A saturated fatty acid has - AN-
SWER .
All single covalent bonds
Fats and oils are composed of - ANSWER Fatty acids and glycerol
Triglycerides, a type of fat, are composed of what two subunits? - ANSWER Fatty acids
and glycerol
What would you have to do to make a fat from the fatty acid shown above? - ANSWER
Attach it to a glycerol along with two other fatty acids.
What kinds of molecules are the major fuel for the salmon's long trip? - ANSWER Triglyc-
erides (fats / oils)
If one or more of the fatty acids in a triglyceride include omega-3 fatty acids, what can you
predict about this substance at room temperature? - ANSWER It is a liquid oil
Based on your knowledge of the structure of triglycerides, what products would you expect
to result from the complete hydrolysis of a fat molecule? More than one is correct. - AN-
SWER Fatty acids and glycerol
The blubber layer helps insulate mammals and birds that live in cold water; fat does not con-
duct heat very quickly. Applying what you know about lipids, what is the main advantage of
covering feathers or fur in oil? - ANSWER Oil sheds water and keeps underlying layers of
fur or downy feathers dry.
1
, Highly simplified diagram of a membrane's structure is made up of - ANSWER Phospho-
lipids
Another type of lipid that composes cells are called phospholipids. Phospholipids differ from
other lipids because they - ANSWER Contains a hydrophobic and hydrophilic end
Ions of salt (sodium, NA+, and chloride, Cl−) are highly hydrophilic. Will they easily pass
through the layer to enter or leave a cell? - ANSWER No.
Which part of the molecules is hydrophilic? - ANSWER The heads
Below is an image of the smallest amino acid: Glycine. What does each line in the picture of
the amino acid represent? - ANSWER A shared pair of electrons in a covalent bond.
What are molecules? - ANSWER Molecules are made of atoms
A peptide is built so that the red amino acid is glutamic acid and the blue amino acid is ly-
sine. How will these amino acids respond to each other? - ANSWER These amino acids
are charged and will attract each other
The amino acid chain of a protein is held together by - ANSWER Covalent bonds
If the protein is mainly structural and needs to maintain a stable, rigid form, which bonds
would it use? - ANSWER Covalent bonds
If the protein needs to be flexible, with bonds that easily break and reform, which bonds
would it use? - ANSWER Hydrogen
Water molecules binding to each other is called a - ANSWER Cohesion
2
