BMS 300: LQs UPDATED 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
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
