BIOLOGY 180 FINAL EXAM BYUI QUESTIONS AND ANSWERS
| UPDATED STUDY SOLUTIONS | 100% CORRECT ANSWERS
A drug designed to inhibit the response of cells to testosterone would almost certainly result in which of
the following? - CORRECT ANSWERS-A decrease in transcriptional activity of certain genes.
Which type of receptor uses GTP hydrolysis in its mechanism? - CORRECT ANSWERS-G-
protein coupled receptors
An inhibitor of which of the following could be used to block the release of calcium from the
endoplasmic reticulum? - CORRECT ANSWERS-Phospholipase C
Carbohydrates carry multiple copies of this group. - CORRECT ANSWERS-Hydroxyl group
Which functional group is the only one with a nitrogen atom? - CORRECT ANSWERS-Amino
When numbering the carbons in a monosaccharide that is in the ring form, what do you look for to know
where carbon #1 is? - CORRECT ANSWERS-The anomeric carbon
Fructose forms multiple hydrogen bonds with water. - CORRECT ANSWERS-True
What functional groups are present in a fatty acid? - CORRECT ANSWERS-Carboxyl, Alkyl
The longer the wavelength the higher the energy of an electromagnetic wave - CORRECT
ANSWERS-False
Which of the following elements has a valence of two? - CORRECT ANSWERS-Oxygen and
Sulfur
What type of bond is formed by the equal sharing of valence electrons? - CORRECT
ANSWERS-A non-polar covalent bond
, Polar molecules, such as water, will commonly participate in which of the following intermolecular
interactions - CORRECT ANSWERS-Hydrogen bonding with polar molecules.
Electrostatic interaction with ionic compounds.
Which of the following compounds would have the capability of forming a hydrogen bond? -
CORRECT ANSWERS-A molecule formed by polar covalent bonds.
What is the concentration of a solution with a volume of 300 mL containing 24 grams of sucrose
(C12H22O11)? - CORRECT ANSWERS-8%
A weak acid like acetic acid: - CORRECT ANSWERS-Will resist changes in pH so long as the pH
is near the pKa.
Which of the following are true regarding pKa? - CORRECT ANSWERS-pKa is the negative
logarithm of the Ka.
pKa is the pH when the conjugate base and weak acid are at the same concentration.
pKa is physical characteristic of each unique buffering system
pH = pKa + log ([A-] / [HA])
A certain channel protein in the cell membrane is equally permeable to both Na+ and K+. Na+
concentrations are high on the outside of the cell (which is positive), while K+ concentrations are high on
the inside of the cell (which is negative). Assuming equal concentration gradients for both Na+ and K+,
which of the following statements is true regarding the movement of these ions through this channel? -
CORRECT ANSWERS-More Na+ ions will be transported.
Which of the following types of transport can use the electrochemical gradient of sodium to move a
solute against its concentration gradient? - CORRECT ANSWERS-Secondary Active Transport
Which of the following membrane activities require energy from ATP hydrolysis? - CORRECT
ANSWERS-Na+ ions moving out of the cell.
| UPDATED STUDY SOLUTIONS | 100% CORRECT ANSWERS
A drug designed to inhibit the response of cells to testosterone would almost certainly result in which of
the following? - CORRECT ANSWERS-A decrease in transcriptional activity of certain genes.
Which type of receptor uses GTP hydrolysis in its mechanism? - CORRECT ANSWERS-G-
protein coupled receptors
An inhibitor of which of the following could be used to block the release of calcium from the
endoplasmic reticulum? - CORRECT ANSWERS-Phospholipase C
Carbohydrates carry multiple copies of this group. - CORRECT ANSWERS-Hydroxyl group
Which functional group is the only one with a nitrogen atom? - CORRECT ANSWERS-Amino
When numbering the carbons in a monosaccharide that is in the ring form, what do you look for to know
where carbon #1 is? - CORRECT ANSWERS-The anomeric carbon
Fructose forms multiple hydrogen bonds with water. - CORRECT ANSWERS-True
What functional groups are present in a fatty acid? - CORRECT ANSWERS-Carboxyl, Alkyl
The longer the wavelength the higher the energy of an electromagnetic wave - CORRECT
ANSWERS-False
Which of the following elements has a valence of two? - CORRECT ANSWERS-Oxygen and
Sulfur
What type of bond is formed by the equal sharing of valence electrons? - CORRECT
ANSWERS-A non-polar covalent bond
, Polar molecules, such as water, will commonly participate in which of the following intermolecular
interactions - CORRECT ANSWERS-Hydrogen bonding with polar molecules.
Electrostatic interaction with ionic compounds.
Which of the following compounds would have the capability of forming a hydrogen bond? -
CORRECT ANSWERS-A molecule formed by polar covalent bonds.
What is the concentration of a solution with a volume of 300 mL containing 24 grams of sucrose
(C12H22O11)? - CORRECT ANSWERS-8%
A weak acid like acetic acid: - CORRECT ANSWERS-Will resist changes in pH so long as the pH
is near the pKa.
Which of the following are true regarding pKa? - CORRECT ANSWERS-pKa is the negative
logarithm of the Ka.
pKa is the pH when the conjugate base and weak acid are at the same concentration.
pKa is physical characteristic of each unique buffering system
pH = pKa + log ([A-] / [HA])
A certain channel protein in the cell membrane is equally permeable to both Na+ and K+. Na+
concentrations are high on the outside of the cell (which is positive), while K+ concentrations are high on
the inside of the cell (which is negative). Assuming equal concentration gradients for both Na+ and K+,
which of the following statements is true regarding the movement of these ions through this channel? -
CORRECT ANSWERS-More Na+ ions will be transported.
Which of the following types of transport can use the electrochemical gradient of sodium to move a
solute against its concentration gradient? - CORRECT ANSWERS-Secondary Active Transport
Which of the following membrane activities require energy from ATP hydrolysis? - CORRECT
ANSWERS-Na+ ions moving out of the cell.
