WorksheetsUnit 1 Biochemistry
Total questions: 18
Worksheet time: 9mins
The main purpose/function of nucleic acids is _____.
storing energy
carrying genetic information
membrane structure
all of the above
Select the molecule that is the monomer of proteins.
Which of the following is true of both starch and cellulose?
They are both polysaccharides.
They have the same structure.
They can both be digested by humans
They are both used for energy storage in plants.
DNA molecules are made of 2 strands that form a double helix.
Hydrogen bonds connect nucleotides from each side and “zip” the DNA together.
Why are hydrogen bonds useful in this case?
They are very strong, and help protect the DNA
They are polar bonds, which means DNA can mix with water.
They are weak interactions, which means the 2 strands can easily be separated and recombined when DNA is read.
They are ionic, and give DNA a negative charge.
How do you know if a molecule is organic?
It has polar bonds
It has hydrogen
It has carbon
It has carbon and hydrogen bound together
What elements are present in nucleic acids?
CHO
CHON
CHOP
CHONP
What elements are present in proteins?
CHO
CHON
CHONP
CHOP
What elements are present in carbohydrates?
CHO
CHON
CHONP
CHOP
Which part of an amino acid has different chemical properties?
the amino group
the peptide bond
the R group (or side chain)
the carboxyl group
What type of molecules repel water?
hydrophobic
hydrophilic
phospholipids
polar molecules
Which macromolecule does not form polymers?
protein
lipid
carbohydrate
nucleic acid
What are the monomers and polymers of proteins called?
nucleotide...nucleic acid
nucleic acid...protein
amino acid...polypeptide
monosaccharide...polysaccharide
What is this molecule?
Saturated fatty acid
Unsaturated fatty acid
Phospholipid
Triglycerol
Cohesion and Adhesion of water allow plants to do what process?
photosynthesis
transpiration
cellular respiration
osmosis
Which of these is NOT like the others?
Dehydration Synthesis
Anabolic reaction
Endothermic reaction
Hydrolysis reaction
Is the following diagram showing hydrolysis of ATP of phosphorylation of ATP?
Hydrolysis of ATP
Phosphorylation
What is the polarity of the phosphate heads on phospholipids?
Polar
Nonpolar
Hydrophobic
Bananaphobic
What type of side chains bury themselves on the inside of a protein to avoid water?
hydrophilic
acidic
hydrophobic
basic
