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WorksheetsAP Biology Unit 1.4 Properties of Biological Macromolecules
Total questions: 25
Worksheet time: 13mins
An organic compound that is composed of carbon, hydrogen, and oxygen in a 1:2:1 ratio is known as?
lipid
proteins
carbohydrates
nucleic acids
The unique properties of proteins are most likely results of?
interactions between R groups of the amino acids
hydrogen bonds linking amino acids
peptide bonds linking amino acid and carboxyl groups
the use of of many different amino acids in the primary structure of the protein
Which two functional groups are always found in amino acids?
hydroxyl and carboxyl
amine and sulfhydryl
carboxyl and amine
phosphate group and nitrogenous base
Which macromolecules requires phosphorus?
steroids and proteins
nucleic acids and certain lipids
carbohydrates and lipids
carbohydrates and nucleic acids
Which structure in a protein refers to one of two three-dimensional shapes that are the result of hydrogen bonding between members of the polypeptide backbone?
primary structure
secondary structure
tertiary structure
quaternary structure
Which structure in a protein refers to a complex globular shape resulting from interactions between the side chains?
primary structure
secondary structure
tertiary structure
quaternary structure
True or false? Monosaccharides are the monomers of carbohydrates and an example would be C6H12O6.
True
False
What are the main functions of polysaccharides?
protection of vital organs
structural support
structural support and energy storage
True or False? Unsaturated fatty acids have no double bonds between carbons and are commonly produced by animals.
True
False
What is the structure of a phospholipid?
they have a hydrophobic (polar) head that includes a phosphate group
they have two fatty acid tails, which are hydrophobic
they are arranged in a bilayer in forming the cell membrane, with the hydrophilic heads pointing toward the watery cytosol or extracellular environment and hydrophobic tails sandwiched in between.
all of the above
What is butter an example of?
unsaturated fatty acid
saturated fatty acid
both
What is the main function of lipids?
energy storage
protection of vital organs
both
none of the above
True or False? Lipids aren't polymers because they are assembled from a variety of components.
True
False
When is a protein denatured?
when secondary and tertiary structures are altered but the peptide bonds of the primary structure between the amino acids are left intact.
when it loses its shape and ability to function of heat or a change in pH
both
what is this an example of?
alpha helix
beta helix
What is cholestrol, estrogen, and testosterone an example of?
fatty acids
proteins
carbohydrates
steriods
What is this an example of?
lipid
amino acid
nucleic acid
carbohydates
How will an adenine nucleotide bond?
it will ionically bond to thymine nucleotides
it will hydrogen bond to thymine nucleotides
it will ionically bond to cytosine nucleotides
it will hydrogen bond to cytosine nucleotides
What are the functions of a protein?
energy, energy storage, structural
important energy source, insulation, phospholipids of plasma membrane
genetic information, code for amino acid sequences
antibodies, movement, membrane receptors
True or False? Nucleotides are made up of a nitrogenous base and a pentose (5 carbon) sugar (deoxyribose in DNA or ribose in RNA)
True
False
What is starch an example of?
a storage of polysaccharide found in plants
a storage of polysaccharide found in animals
a storage of monosaccharides found in plants
a storage of monosaccharides found in animals
What are fats made up of?
made up of a central carbon bonded to a carboxyl group at one end and an NH2 at the other end, a hydrogen atom, and an R group
made up of a glycerol molecule and two fatty acid molecules
made up of a glycerol molecule and three fatty acid molecules
none of the above
Cellulose and chitin is an example of what?
proteins
fats
lipids
carbohydrates
True or false? The primary structure of a protein is the sequence in which amino acids are joined.
True
False
What is this an example of?
alpha helix
beta helix
none of the above
