BIOLOGY 107 - EXAM 1 QUESTIONS
AND ANSWERS
What is the difference between a tissue and an organ system? - Correct Answers -An
organ system includes tissues.
Which of the following statements about the properties of life is false? - Correct Answers
-Organisms have an unchanging, constant internal environment.
Life is organized in a hierarchical fashion. Which of the following sequences correctly
lists that hierarchy from least inclusive to most inclusive? - Correct Answers -molecule,
organelle, cell, tissue, organ, organ system, organism, population, community,
ecosystem
Name the domain, and sub-domain, where applicable, to which the following organisms
belong to:
A pine tree: ___________________________
A bacteria living in your intestine: __________________________
A mushroom: _____________________________ - Correct Answers -1. Eukarya,
Plantae; 2. Bacteria; 3. Eukarya, Fungi
Your instructor asks you to look into your microscope to see a prokaryotic cell. You will
be looking for a cell that: - Correct Answers -has a membrane.
Which of the following statements about the domain Bacteria is true? - Correct Answers
-All bacteria lack a nucleus
Which of the following particles are not found in the nucleus of an atom? - Correct
Answers -only electrons
An uncharged atom of boron has an atomic number of 5 and an atomic mass of 11.
How many electrons does boron have? - Correct Answers -5
Typically, nitrogen atoms are composed of electrons, protons, and neutrons. An isotope
of nitrogen could - Correct Answers -have more neutrons than the usual nitrogen atom.
A radioactive isotope is an isotope that - Correct Answers -decays.
Which of the following statements about radioactive isotopes is true? - Correct Answers
-The energy emitted by radioactive isotopes can break chemical bonds and cause
molecular damage in cells.
, Which of the following statements about cells is true? - Correct Answers -All cells have
cellular membranes.
Which of the following structures is exclusively associated with prokaryotic cells? -
Correct Answers -nucleoid
The nucleoid region of a prokaryotic cell - Correct Answers -contains the cell's DNA
A(n) ________ forms when two atoms share electrons. - Correct Answers -covalent
bond
A lithium atom has one electron on its valence shell. How many covalent bonds can
lithium form? - Correct Answers -one
A solution with a pH of 7 is - Correct Answers -neutral.
Organic compounds - Correct Answers -always contain carbon.
The following is a monomer of a carbohydrate: - Correct Answers -glucose
The results of dehydration synthesis can be reversed by - Correct Answers -hydrolysis.
Match the figure with the correct protein structure:
1 (Image of a sequence of amino acids in a polypeptide/single chain.) Primary Protein
2 (Image of a folded/pleated regular recurring repetitive structure). Secondary Protein
3 (Image of a three-dimensional folding pattern with a squiggly line in the middle)
Tertiary Protein Structure
4 (Image of a two separate structures, jumbled together, one is lightly colored and the
other darker colored) Quaternary Protein Structure
Images can be found here:
https://www.khanacademy.org/science/biology/macromolecules/proteins-and-amino-
acids/a/orders-of-protein-structure - Correct Answers -1 with b, 2 with c, 3 with d, and 4
with a
I'm a nucleic acid, and I use uracyl as a base, instead of thymidine, and I have a single
strand. I am _____________ - Correct Answers -RNA
What is the general function of enzymes within a cell? - Correct Answers -to speed up
chemical reactions
Fatty acids are - Correct Answers -hydrophobic.
Which of the following would be correctly classified as a protein? - Correct Answers -
enzyme
AND ANSWERS
What is the difference between a tissue and an organ system? - Correct Answers -An
organ system includes tissues.
Which of the following statements about the properties of life is false? - Correct Answers
-Organisms have an unchanging, constant internal environment.
Life is organized in a hierarchical fashion. Which of the following sequences correctly
lists that hierarchy from least inclusive to most inclusive? - Correct Answers -molecule,
organelle, cell, tissue, organ, organ system, organism, population, community,
ecosystem
Name the domain, and sub-domain, where applicable, to which the following organisms
belong to:
A pine tree: ___________________________
A bacteria living in your intestine: __________________________
A mushroom: _____________________________ - Correct Answers -1. Eukarya,
Plantae; 2. Bacteria; 3. Eukarya, Fungi
Your instructor asks you to look into your microscope to see a prokaryotic cell. You will
be looking for a cell that: - Correct Answers -has a membrane.
Which of the following statements about the domain Bacteria is true? - Correct Answers
-All bacteria lack a nucleus
Which of the following particles are not found in the nucleus of an atom? - Correct
Answers -only electrons
An uncharged atom of boron has an atomic number of 5 and an atomic mass of 11.
How many electrons does boron have? - Correct Answers -5
Typically, nitrogen atoms are composed of electrons, protons, and neutrons. An isotope
of nitrogen could - Correct Answers -have more neutrons than the usual nitrogen atom.
A radioactive isotope is an isotope that - Correct Answers -decays.
Which of the following statements about radioactive isotopes is true? - Correct Answers
-The energy emitted by radioactive isotopes can break chemical bonds and cause
molecular damage in cells.
, Which of the following statements about cells is true? - Correct Answers -All cells have
cellular membranes.
Which of the following structures is exclusively associated with prokaryotic cells? -
Correct Answers -nucleoid
The nucleoid region of a prokaryotic cell - Correct Answers -contains the cell's DNA
A(n) ________ forms when two atoms share electrons. - Correct Answers -covalent
bond
A lithium atom has one electron on its valence shell. How many covalent bonds can
lithium form? - Correct Answers -one
A solution with a pH of 7 is - Correct Answers -neutral.
Organic compounds - Correct Answers -always contain carbon.
The following is a monomer of a carbohydrate: - Correct Answers -glucose
The results of dehydration synthesis can be reversed by - Correct Answers -hydrolysis.
Match the figure with the correct protein structure:
1 (Image of a sequence of amino acids in a polypeptide/single chain.) Primary Protein
2 (Image of a folded/pleated regular recurring repetitive structure). Secondary Protein
3 (Image of a three-dimensional folding pattern with a squiggly line in the middle)
Tertiary Protein Structure
4 (Image of a two separate structures, jumbled together, one is lightly colored and the
other darker colored) Quaternary Protein Structure
Images can be found here:
https://www.khanacademy.org/science/biology/macromolecules/proteins-and-amino-
acids/a/orders-of-protein-structure - Correct Answers -1 with b, 2 with c, 3 with d, and 4
with a
I'm a nucleic acid, and I use uracyl as a base, instead of thymidine, and I have a single
strand. I am _____________ - Correct Answers -RNA
What is the general function of enzymes within a cell? - Correct Answers -to speed up
chemical reactions
Fatty acids are - Correct Answers -hydrophobic.
Which of the following would be correctly classified as a protein? - Correct Answers -
enzyme
