BMS 300 Exam 1 (Quiz Questions) With
Complete Solutions
Water molecules are attracted to each other and form ________ bonds.
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- ANSWER✔✔✔-Hydrogen
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Two solutions are separated by a membrane that contains only channels
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|permeable to water (aquaporins). The solution in the left-hand
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compartment contains 30 millimolar NaCl, which dissociates completely,
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|and the right hand compartment contains 60 millimolar urea which is a
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small, charged molecule that does not dissociate. Which of the
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following statements is correct? - ANSWER✔✔✔-Water will not flow
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because osmotic forces are balanced.
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A bond in which electrons are shared between atoms is a _______
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bond. - ANSWER✔✔✔-Covalent
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Which of the following is NOT true about hydrophilic molecules -
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ANSWER✔✔✔-They have equal sharing of electrons across all the | | | | | | | | |
atoms in the molecule
| | |
__________ pressure is the driving force of water through aquaporins -
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ANSWER✔✔✔-Osmotic
,Triglycerides are composed of 1 long chain fatty acid and three glycerols
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- ANSWER✔✔✔-False
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In triglycerides, a fatty acid is joined to glycerol by a(n) ________ bond -
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ANSWER✔✔✔-Covalent and Ester | |
_______ 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. - ANSWER✔✔✔-Osmosis
| |
The portion of an amino acid that differentiates one amino acid from
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another is the _____. - ANSWER✔✔✔-R-Group
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The most stable form phospholipids found in nature are? -
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ANSWER✔✔✔-Liposome
In order to form a protein, multiple amino acids are linked via what
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bond? - ANSWER✔✔✔-Covalent and Peptide
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In a phospholipid bilayer, how would hydrophobic and hydrophilic R
| | | | | | | | | |
groups of a transmembrane protein orientate themselves? -
| | | | | | | |
, ANSWER✔✔✔-Hydrophilic R groups-Face inward to form a | | | | | |
polar/charged channel
| |
Hydrophobic R groups-Face outward to interact with phospholipid tails
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Match the term on the left with the correct information on the right
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Alpha Helix | |
Beta-Pleated Sheet - ANSWER✔✔✔-Alpha Helix-Hydrogen Bonding
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within the strand | | |
Beta-Pleated Sheet-Hydrogen Bonding between strands
| | | |
Alpha helices are more likely to be found spanning membranes than
| | | | | | | | | | |
beta sheets. - ANSWER✔✔✔-True
| | |
Which of the following is NOT a typical component of biological
| | | | | | | | | | |
membranes? - ANSWER✔✔✔-triglycerides | |
What protein structure allows enzymes to bind its substrate? -
| | | | | | | | | |
ANSWER✔✔✔-Tertiary
The amino acids on the outside of a protein placed in a bucket of fat are:
| | | | | | | | | | | | | | |
- ANSWER✔✔✔-hydrophobic
| |
Complete Solutions
Water molecules are attracted to each other and form ________ bonds.
| | | | | | | | | |
- ANSWER✔✔✔-Hydrogen
| |
Two solutions are separated by a membrane that contains only channels
| | | | | | | | | |
|permeable to water (aquaporins). The solution in the left-hand
| | | | | | | | |
compartment contains 30 millimolar NaCl, which dissociates completely,
| | | | | | |
|and the right hand compartment contains 60 millimolar urea which is a
| | | | | | | | | | | |
small, charged molecule that does not dissociate. Which of the
| | | | | | | | | |
following statements is correct? - ANSWER✔✔✔-Water will not flow
| | | | | | | | |
because osmotic forces are balanced.
| | | |
A bond in which electrons are shared between atoms is a _______
| | | | | | | | | | | |
bond. - ANSWER✔✔✔-Covalent
| |
Which of the following is NOT true about hydrophilic molecules -
| | | | | | | | | | |
ANSWER✔✔✔-They have equal sharing of electrons across all the | | | | | | | | |
atoms in the molecule
| | |
__________ pressure is the driving force of water through aquaporins -
| | | | | | | | | | |
ANSWER✔✔✔-Osmotic
,Triglycerides are composed of 1 long chain fatty acid and three glycerols
| | | | | | | | | | |
- ANSWER✔✔✔-False
| |
In triglycerides, a fatty acid is joined to glycerol by a(n) ________ bond -
| | | | | | | | | | | | | |
ANSWER✔✔✔-Covalent and Ester | |
_______ 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. - ANSWER✔✔✔-Osmosis
| |
The portion of an amino acid that differentiates one amino acid from
| | | | | | | | | | | |
another is the _____. - ANSWER✔✔✔-R-Group
| | | | |
The most stable form phospholipids found in nature are? -
| | | | | | | | | |
ANSWER✔✔✔-Liposome
In order to form a protein, multiple amino acids are linked via what
| | | | | | | | | | | | |
bond? - ANSWER✔✔✔-Covalent and Peptide
| | | |
In a phospholipid bilayer, how would hydrophobic and hydrophilic R
| | | | | | | | | |
groups of a transmembrane protein orientate themselves? -
| | | | | | | |
, ANSWER✔✔✔-Hydrophilic R groups-Face inward to form a | | | | | |
polar/charged channel
| |
Hydrophobic R groups-Face outward to interact with phospholipid tails
| | | | | | | |
Match the term on the left with the correct information on the right
| | | | | | | | | | | | |
Alpha Helix | |
Beta-Pleated Sheet - ANSWER✔✔✔-Alpha Helix-Hydrogen Bonding
| | | | | |
within the strand | | |
Beta-Pleated Sheet-Hydrogen Bonding between strands
| | | |
Alpha helices are more likely to be found spanning membranes than
| | | | | | | | | | |
beta sheets. - ANSWER✔✔✔-True
| | |
Which of the following is NOT a typical component of biological
| | | | | | | | | | |
membranes? - ANSWER✔✔✔-triglycerides | |
What protein structure allows enzymes to bind its substrate? -
| | | | | | | | | |
ANSWER✔✔✔-Tertiary
The amino acids on the outside of a protein placed in a bucket of fat are:
| | | | | | | | | | | | | | |
- ANSWER✔✔✔-hydrophobic
| |
