lesson 8 unit 2 a
A protein may consist of as many as amino acid molecules.
5000
hormone
A chemical synthesized by an organism which aids in the control of a specific function in the organism.
lipid
A group of organic compounds including fats, steroids, and phospholipids.
protein
A large complex organic molecule consisting of a large number of amino acids linked together by peptide bonds.
antibody
A protein specialized to defend the body against disease.
amino acid
The basic building block of proteins; contains a carboxyl group (-COOH) and an amino group (-NH2).
hydrolysis
The breakdown of large molecules into smaller molecules with water being a reactant.
Lipids are composed of the same basic elements as carbohydrates.
True
Sickle-cell anemia is caused by incorrect sequencing of _____.
amino acids
Which of the following chemicals are proteins?
antibodies enzymes hormones
The most highly concentrated source of energy in the body is .
fats
The oxygen-transporting protein in the blood is called .
hemoglobin
A natural chemical which controls a specific body function is called a(n) .
hormone
The breakdown of molecules by the addition of water:
hydrolysis
Steroids are:
lipids
(Select all that apply.) Choose sources of protein in our diet.
milk cheese poultry fish black beans eggs
In addition to the elements found in carbohydrates and lipids, proteins contain the element .
nitrogen
Bonds between amino acids are called bonds.
peptide
The organic chemicals which help cell walls to conserve internal fluids are _____.
phospholipids
The physical properties of a are highly sensitive to the sequence in which the amino acids are linked.
protein
The building blocks of _____ are amino acids.
proteins
Cholesterol belongs to the group of lipids called _____.
steroids
(Select all that apply.) Choose from the following list the three groups of lipids.
steroids phospholipids fats
How do lipids differ from carbohydrates?
they are not soluble in water the H/O ratio is different
A protein specialized to protect the body from disease is a(n) .
antibody
Lipids are soluble in solvents called .
organic solvents
