Bio 93 Midterm Review (Test
Questions)
Which of the following properties or processes do we associate with living things?
A) evolutionary adaptations
B) energy processing
C) responding to the environment
D) growth and reproduction
E) all of the above - answere
The lowest level of biological organization that can perform all the activities
required for life is the
A) organelle-for example, a chloroplast.
B) cell-for example, a skin cell.
C) tissue-for example, nervous tissue.
D) organ system-for example, the reproductive system.
E) organism-for example, an amoeba, dog, human, or maple tree. - answerb
A covalent chemical bond is one in which
A) electrons are removed from one atom and transferred to another atom so that the
two atoms become oppositely charged.
B) protons and neutrons are shared by two atoms so as to satisfy the requirements of
both atoms.
C) outer-shell electrons of two atoms are shared so as to satisfactorily fill the outer
electron shells of both atoms.
D) outer-shell electrons of one atom are transferred to the inner electron shells of
another atom.
E) the inner-shell electrons of one atom are transferred to the outer shell of another
atom. - answerc
The ionic bond of sodium chloride is formed when
A) chlorine gains an electron from sodium.
B) sodium and chlorine share an electron pair.
C) sodium and chlorine both lose electrons from their outer valence shells.
D) sodium gains an electron from chlorine.
E) chlorine gains a proton from sodium. - answera
Which of the following explains most specifically the attraction of water molecules to one
another?
A) nonpolar covalent bond
B) polar covalent bond
C) ionic bond
,D) hydrogen bond
E) hydrophobic interaction - answerd
Hydrophobic substances such as vegetable oil are
A) nonpolar substances that repel water molecules.
B) nonpolar substances that have an attraction for water molecules.
C) polar substances that repel water molecules.
D) polar substances that have an affinity for water.
E) charged molecules that hydrogen-bond with water molecules. - answera
Which of the following statements is true about buffer solutions?
A) They maintain a constant pH when bases are added to them but not when
acids are added to them.
B) They maintain a constant pH when acids are added to them but not when
bases are added to them.
C) They maintain a constant pH of exactly 7 in all living cells and biological fluids.
D) They maintain a relatively constant pH when either acids or bases are
added to them.
E) They are found only in living systems and biological fluids. - answerd
Which is the best description of a carbonyl group?
A) an oxygen joined to a carbon by a single covalent bond
B) a nitrogen and two hydrogens joined to a carbon by covalent bonds
C) a carbon joined to two hydrogens by single covalent bonds
D) a sulfur and a hydrogen joined to a carbon by covalent bonds
E) a carbon atom joined to an oxygen by a double covalent bond - answere
Which of the following contains nitrogen in addition to carbon, oxygen, and hydrogen?
A) an alcohol such as ethanol
B) a monosaccharide such as glucose
C) a steroid such as testosterone
D) an amino acid such as glycine
E) a hydrocarbon such as benzene - answerd
Which of the following is not a polymer?
A) steroid
B) starch
C) cellulose
D) glycogen
E) DNA - answera
IMAGE Which of the following statements is true regarding this molecule?
A) It is a saturated fatty acid.
B) A diet rich in this molecule may contribute to atherosclerosis.
C) Molecules of this type are usually liquid at room temperature.
D) A and B only
, E) A, B and C - answerc
The bonding of two monosaccharide molecules to form a larger molecule
requires
A) the release of a water molecule.
B) the release of a carbon dioxide molecule.
C) the addition of a nitrogen atom.
D) the addition of a water molecule.
E) both B and C - answera
The nuclear lamina is an array of filaments on the inner side of the nuclear membrane.
If a method were found that could cause the lamina to fall into disarray, what would you
expect to be the most likely consequence?
A) the loss of all nuclear function
B) the inability of the cell to withstand enzymatic digestion
C) a change in the shape of the nucleus - answerc
The liver is involved in detoxification of many poisons and drugs. Which of
the following structures is primarily involved in this process and therefore
abundant in liver cells?
A) rough ER
B) smooth ER
C) Golgi apparatus
D) Nuclear envelope
E) Transport vesicles - answerb
Which of the following contains its own DNA and ribosomes?
A) lysosome
B) vacuole
C) mitochondrion
D) Golgi apparatus
E) peroxisome - answerc
Microfilaments are well known for their role in which of the following?
A) cell crawling
B) extension of pseudopodia
C) contracting of muscle cells
D) A and B only
E) A, B, and C - answere
Cells will incorporate radioactively labeled amino acids into proteins. This "tagging" of
newly synthesized proteins enables a researcher to track their location. In this case, we
are tracking an enzyme secreted by pancreatic cells. What is its most likely pathway?
A) ER → Golgi → nucleus
B) Golgi → ER → lysosome
C) nucleus → ER → Golgi
Questions)
Which of the following properties or processes do we associate with living things?
A) evolutionary adaptations
B) energy processing
C) responding to the environment
D) growth and reproduction
E) all of the above - answere
The lowest level of biological organization that can perform all the activities
required for life is the
A) organelle-for example, a chloroplast.
B) cell-for example, a skin cell.
C) tissue-for example, nervous tissue.
D) organ system-for example, the reproductive system.
E) organism-for example, an amoeba, dog, human, or maple tree. - answerb
A covalent chemical bond is one in which
A) electrons are removed from one atom and transferred to another atom so that the
two atoms become oppositely charged.
B) protons and neutrons are shared by two atoms so as to satisfy the requirements of
both atoms.
C) outer-shell electrons of two atoms are shared so as to satisfactorily fill the outer
electron shells of both atoms.
D) outer-shell electrons of one atom are transferred to the inner electron shells of
another atom.
E) the inner-shell electrons of one atom are transferred to the outer shell of another
atom. - answerc
The ionic bond of sodium chloride is formed when
A) chlorine gains an electron from sodium.
B) sodium and chlorine share an electron pair.
C) sodium and chlorine both lose electrons from their outer valence shells.
D) sodium gains an electron from chlorine.
E) chlorine gains a proton from sodium. - answera
Which of the following explains most specifically the attraction of water molecules to one
another?
A) nonpolar covalent bond
B) polar covalent bond
C) ionic bond
,D) hydrogen bond
E) hydrophobic interaction - answerd
Hydrophobic substances such as vegetable oil are
A) nonpolar substances that repel water molecules.
B) nonpolar substances that have an attraction for water molecules.
C) polar substances that repel water molecules.
D) polar substances that have an affinity for water.
E) charged molecules that hydrogen-bond with water molecules. - answera
Which of the following statements is true about buffer solutions?
A) They maintain a constant pH when bases are added to them but not when
acids are added to them.
B) They maintain a constant pH when acids are added to them but not when
bases are added to them.
C) They maintain a constant pH of exactly 7 in all living cells and biological fluids.
D) They maintain a relatively constant pH when either acids or bases are
added to them.
E) They are found only in living systems and biological fluids. - answerd
Which is the best description of a carbonyl group?
A) an oxygen joined to a carbon by a single covalent bond
B) a nitrogen and two hydrogens joined to a carbon by covalent bonds
C) a carbon joined to two hydrogens by single covalent bonds
D) a sulfur and a hydrogen joined to a carbon by covalent bonds
E) a carbon atom joined to an oxygen by a double covalent bond - answere
Which of the following contains nitrogen in addition to carbon, oxygen, and hydrogen?
A) an alcohol such as ethanol
B) a monosaccharide such as glucose
C) a steroid such as testosterone
D) an amino acid such as glycine
E) a hydrocarbon such as benzene - answerd
Which of the following is not a polymer?
A) steroid
B) starch
C) cellulose
D) glycogen
E) DNA - answera
IMAGE Which of the following statements is true regarding this molecule?
A) It is a saturated fatty acid.
B) A diet rich in this molecule may contribute to atherosclerosis.
C) Molecules of this type are usually liquid at room temperature.
D) A and B only
, E) A, B and C - answerc
The bonding of two monosaccharide molecules to form a larger molecule
requires
A) the release of a water molecule.
B) the release of a carbon dioxide molecule.
C) the addition of a nitrogen atom.
D) the addition of a water molecule.
E) both B and C - answera
The nuclear lamina is an array of filaments on the inner side of the nuclear membrane.
If a method were found that could cause the lamina to fall into disarray, what would you
expect to be the most likely consequence?
A) the loss of all nuclear function
B) the inability of the cell to withstand enzymatic digestion
C) a change in the shape of the nucleus - answerc
The liver is involved in detoxification of many poisons and drugs. Which of
the following structures is primarily involved in this process and therefore
abundant in liver cells?
A) rough ER
B) smooth ER
C) Golgi apparatus
D) Nuclear envelope
E) Transport vesicles - answerb
Which of the following contains its own DNA and ribosomes?
A) lysosome
B) vacuole
C) mitochondrion
D) Golgi apparatus
E) peroxisome - answerc
Microfilaments are well known for their role in which of the following?
A) cell crawling
B) extension of pseudopodia
C) contracting of muscle cells
D) A and B only
E) A, B, and C - answere
Cells will incorporate radioactively labeled amino acids into proteins. This "tagging" of
newly synthesized proteins enables a researcher to track their location. In this case, we
are tracking an enzyme secreted by pancreatic cells. What is its most likely pathway?
A) ER → Golgi → nucleus
B) Golgi → ER → lysosome
C) nucleus → ER → Golgi
