Biomolecules 1
In humans and other multicellular organisms, which substance plays a central role as an energy source?
a. carbohydrate
b. fat
c. protein
d. water
What is carbohydrate?
Glycogen is an example of what type of macromolecule?
Carbohydrate
Which macromolecule forms the cell wall in plants that helps to give the plant support?
Carbohydrates (starches)
Where is glycogen stored?
In the liver and in muscle tissue
To test for the presence of a complex carbohydrate, this reagent is used
What is Iodine?
What is the formula for glucose?
C₆H₁₂O₆
Which of the biomolecules typically contains both nitrogen and a phosphate?
Nucleic Acids
Which is a function of proteins?
a. forms the cell wall
b. insulation
c. gene expression
d. regulates enzymes
Regulates enzymes
Which element is found in proteins but NOT in carbohydrates or lipids?
N
To test for the presence of a protein, this reagent will be used
What is Biuret's?
The subunits of a protein are
Amino Acids
Which macromolecule is involved in nearly every function in the human body?
Protein
Which is NOT true of lipids?
a. They are commonly called fats and oils
b. They are hydrophobic
c. They are good for energy storage
d. They are polar
They are polar
Proteins are polymers composed of amino acids joined by peptide bonds. True or False?
True
To test for the presence of a simple sugar, this reagent is used in a hot water bath
What is Benedict's Solution?
Amino acids are the building block of what molecule?
Proteins
Enzymes that catalyze cellular regulations are macromolecules made of organic compounds composed of carbon, hydrogen, oxygen, and nitrogen. These types of macromolecules are known as __________________.
Proteins
Which macromolecule stores long-term energy for an organism?
lipids
Large biological molecules are made up of smaller subunits. What are these smaller subunits called?
Monomers
Biurets will turn from blue to this color if protein is present
What is purple?
Which of the following contains deoxyribose sugar?
DNA
RNA
Proteins
Lipids
DNA
Glycogen is a ____________ type of biomolecule and is stored in the ____________ and _______________.
Carbohydrate, liver, muscles
What class of molecules store and communicate genetic information?
Nucleic Acids
Many land plants store energy in starch. When energy is needed, the starch molecules can be broken down quickly. This chemical reaction produces which of the following?
a. amino acids
b. lipids
c. monosaccharides
d. RNA chains
Monosaccharides
Iodine will turn this color if complex carbohydrates (starch) is present?
What is blue/black?