BIO 172 EXAM 1 WITH 100%
CORRECT ANSWERS 2026
What statement is supported by the Cell Theory? correct answer
Archaea, Bacteria and Eukarya contain DNA as the genetic
material
Which branches in the tree of life contain the following properties:
DNA as their genetic material, unicellular, phospholipids in their
cell membranes, proteins with quaternary structure, alpha-linked
polysaccharides, and nucleotides with a hydroxl at the 2' position?
correct answer Eukarya, Bacteria and Archaea
The element nitrogen (N) has an atomic number of 7. You are
using two different isotopes of nitrogen in the lab, 14N and 15N.
What is true? correct answer 15 N has one more neutron than
14N
In our atmosphere, oxygen can be in the form of O2. Our cells are
dependent on O2 being available in the cell. What types of
interactions would you not expect to find between O2 and water
molecules in the cell? correct answer -hydrogen bonds with the
oxygen in H2O
-hydrogen bonds with the hydrogen in H2O
-Van der Waals interactions with the hydrogen in H2O
-covalent bonds with the oxygen in H2O
, Water molecules can make hydrogen bonds with each other.
What is FALSE about hydrogen bonds and water molecules.
correct answer Hydrogen bonds occur between the oxygen and
the hydrogen of a single water molecule
Below is a series of statements describing protein structure.
Choose the statement that correctly describes a level of protein
structure. correct answer Peptide bonds form between the
amino group (N-terminus) of the first amino acid and the carboxyl
group (C-terminus of the second amino acid)
The COVID-19 virus has an enzyme called RNA polymerase that
makes RNA nucleic acid strands for the virus when it replicates.
The RNA polymerase enzyme from COVID-19 was studied and
found to be composed of 3 polypeptide subunits. What is true
about the RNA polymerase enzyme from COVID-19? correct
answer The COVID-19 RNA polymerase enzyme has quaternary
structure
How might an integral membrane protein get denatures? correct
answer raise the pH in the cell
The following statements compare hydrolysis and condensation.
Which of the following comparisons is false correct answer
Condensation reactions break covalent bonds, hydrolysis
reactions make covalent bonds
What is the most accurate description of the role of enzymes in
catalyzing biochemical reactions? correct answer Enzymes
bind to substrates and stabilize the transition state so that the
activation energy is lowered
CORRECT ANSWERS 2026
What statement is supported by the Cell Theory? correct answer
Archaea, Bacteria and Eukarya contain DNA as the genetic
material
Which branches in the tree of life contain the following properties:
DNA as their genetic material, unicellular, phospholipids in their
cell membranes, proteins with quaternary structure, alpha-linked
polysaccharides, and nucleotides with a hydroxl at the 2' position?
correct answer Eukarya, Bacteria and Archaea
The element nitrogen (N) has an atomic number of 7. You are
using two different isotopes of nitrogen in the lab, 14N and 15N.
What is true? correct answer 15 N has one more neutron than
14N
In our atmosphere, oxygen can be in the form of O2. Our cells are
dependent on O2 being available in the cell. What types of
interactions would you not expect to find between O2 and water
molecules in the cell? correct answer -hydrogen bonds with the
oxygen in H2O
-hydrogen bonds with the hydrogen in H2O
-Van der Waals interactions with the hydrogen in H2O
-covalent bonds with the oxygen in H2O
, Water molecules can make hydrogen bonds with each other.
What is FALSE about hydrogen bonds and water molecules.
correct answer Hydrogen bonds occur between the oxygen and
the hydrogen of a single water molecule
Below is a series of statements describing protein structure.
Choose the statement that correctly describes a level of protein
structure. correct answer Peptide bonds form between the
amino group (N-terminus) of the first amino acid and the carboxyl
group (C-terminus of the second amino acid)
The COVID-19 virus has an enzyme called RNA polymerase that
makes RNA nucleic acid strands for the virus when it replicates.
The RNA polymerase enzyme from COVID-19 was studied and
found to be composed of 3 polypeptide subunits. What is true
about the RNA polymerase enzyme from COVID-19? correct
answer The COVID-19 RNA polymerase enzyme has quaternary
structure
How might an integral membrane protein get denatures? correct
answer raise the pH in the cell
The following statements compare hydrolysis and condensation.
Which of the following comparisons is false correct answer
Condensation reactions break covalent bonds, hydrolysis
reactions make covalent bonds
What is the most accurate description of the role of enzymes in
catalyzing biochemical reactions? correct answer Enzymes
bind to substrates and stabilize the transition state so that the
activation energy is lowered
