BMS 300: LQs UPDATED ACTUAL Exam
Questions and CORRECT Answers
A bond in which electrons are shared between atoms is a(n) ______ bond.
- covalent
- hydrogen
- ionic
- dipole moment - CORRECT ANSWER - Covalent
Water molecules are attracted to each other and form _______ bonds.
- hydrogen
- oxygen
- covalent
- ionic - CORRECT ANSWER - Hydrogen
Which of the following can describe a hydrophilic molecule?
- charged ion
- non-polar
- water loving
- water fearing - CORRECT ANSWER - - charged ion
- water loving
Na+ will be attracted to what portion of a water molecule?
- oxygen
- hydrogen
- none of it - CORRECT ANSWER - Oxygen
,_______ is the diffusion of water molecules through a semipermeable membrane from a place of
higher water concentration to a place of lower water concentration until the concentration on
both sides is equal.
- Osmosis
- acetylation
- hydration - CORRECT ANSWER - Osmosis
In triglycerides, a fatty acid is joined to glycerol by a(n) ______ bond.
- ester
- hydrogen
- ionic
- covalent - CORRECT ANSWER - - Ester
- Covalent
Two solutions are separated by a membrane that contains only channels permeable to water
(aquaporins). The solution in the left compartment contains 30mm NaCl, which dissociates
completely, and the right compartment contains 60mm urea which is a small, charged molecule
that does not dissociate. Which of the following statements is correct?
- Water will not flow because osmotic forces are balanced
- water will flow from right to left because the osmotic concentration of the NaCl is higher
- water will flow from left to right because the osmotic concentration of the urea is higher
- urea will diffuse from right to left - CORRECT ANSWER - Water will not flow because
osmotic forces are balanced
The portion of an amino acid that differentiates one amino acid from another is the _______.
- r group
- p group
- c terminus
- n terminus - CORRECT ANSWER - R-Group
,In order to form a chain of amino acids, multiple amino acids are linked via what bond?
- peptide bond
- covalent bond
- ionic bond
- hydrogen bond - CORRECT ANSWER - - Peptide bond
- covalent bond
Triglycerides are composed of 1 long chain fatty acid and 3 glycerols
- True
- False - CORRECT ANSWER - False
Which of the following is the least stable form of phospholipid structure?
- Micelle
- liposome
- planar bilayer - CORRECT ANSWER - Micelle
Match the protein terminus with its correct structure
1. Amino Terminus =
2. Carboxy Terminus =
- H2O
- NH2
- COOH - CORRECT ANSWER - 1. NH2
2. COOH
________ interact with water to form ________ structure of proteins.
- R-groups, secondary
- R-groups, tertiary
- Hydrogen bonds, secondary
, - hydrogen bonds, tertiary - CORRECT ANSWER - R-Groups, tertiary
R-Groups can be...
- charged
- uncharged
- polar
- all of them
- none of them - CORRECT ANSWER - All of them
The amino acids that can be found on the outside of a protein when placed in water are:
- hydrophilic
- hydrophobic - CORRECT ANSWER - hydrophilic
Alpha helices form due to ________ bonding of amino acids ________ the strand
- hydrogen, within
- hydrogen, outside
- covalent, within
- covalent, outside - CORRECT ANSWER - Hydrogen, within
Urea can be used to "denature" a protein by disrupting hydrogen bonds. A denature protein
would most likely be in the _______ structure.
- primary
- secondary
- tertiary
- quaternary - CORRECT ANSWER - Primary
SARS COV2 binds to cells using its:
- ACE2 receptor
Questions and CORRECT Answers
A bond in which electrons are shared between atoms is a(n) ______ bond.
- covalent
- hydrogen
- ionic
- dipole moment - CORRECT ANSWER - Covalent
Water molecules are attracted to each other and form _______ bonds.
- hydrogen
- oxygen
- covalent
- ionic - CORRECT ANSWER - Hydrogen
Which of the following can describe a hydrophilic molecule?
- charged ion
- non-polar
- water loving
- water fearing - CORRECT ANSWER - - charged ion
- water loving
Na+ will be attracted to what portion of a water molecule?
- oxygen
- hydrogen
- none of it - CORRECT ANSWER - Oxygen
,_______ is the diffusion of water molecules through a semipermeable membrane from a place of
higher water concentration to a place of lower water concentration until the concentration on
both sides is equal.
- Osmosis
- acetylation
- hydration - CORRECT ANSWER - Osmosis
In triglycerides, a fatty acid is joined to glycerol by a(n) ______ bond.
- ester
- hydrogen
- ionic
- covalent - CORRECT ANSWER - - Ester
- Covalent
Two solutions are separated by a membrane that contains only channels permeable to water
(aquaporins). The solution in the left compartment contains 30mm NaCl, which dissociates
completely, and the right compartment contains 60mm urea which is a small, charged molecule
that does not dissociate. Which of the following statements is correct?
- Water will not flow because osmotic forces are balanced
- water will flow from right to left because the osmotic concentration of the NaCl is higher
- water will flow from left to right because the osmotic concentration of the urea is higher
- urea will diffuse from right to left - CORRECT ANSWER - Water will not flow because
osmotic forces are balanced
The portion of an amino acid that differentiates one amino acid from another is the _______.
- r group
- p group
- c terminus
- n terminus - CORRECT ANSWER - R-Group
,In order to form a chain of amino acids, multiple amino acids are linked via what bond?
- peptide bond
- covalent bond
- ionic bond
- hydrogen bond - CORRECT ANSWER - - Peptide bond
- covalent bond
Triglycerides are composed of 1 long chain fatty acid and 3 glycerols
- True
- False - CORRECT ANSWER - False
Which of the following is the least stable form of phospholipid structure?
- Micelle
- liposome
- planar bilayer - CORRECT ANSWER - Micelle
Match the protein terminus with its correct structure
1. Amino Terminus =
2. Carboxy Terminus =
- H2O
- NH2
- COOH - CORRECT ANSWER - 1. NH2
2. COOH
________ interact with water to form ________ structure of proteins.
- R-groups, secondary
- R-groups, tertiary
- Hydrogen bonds, secondary
, - hydrogen bonds, tertiary - CORRECT ANSWER - R-Groups, tertiary
R-Groups can be...
- charged
- uncharged
- polar
- all of them
- none of them - CORRECT ANSWER - All of them
The amino acids that can be found on the outside of a protein when placed in water are:
- hydrophilic
- hydrophobic - CORRECT ANSWER - hydrophilic
Alpha helices form due to ________ bonding of amino acids ________ the strand
- hydrogen, within
- hydrogen, outside
- covalent, within
- covalent, outside - CORRECT ANSWER - Hydrogen, within
Urea can be used to "denature" a protein by disrupting hydrogen bonds. A denature protein
would most likely be in the _______ structure.
- primary
- secondary
- tertiary
- quaternary - CORRECT ANSWER - Primary
SARS COV2 binds to cells using its:
- ACE2 receptor
