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BIO 181 Exam 3 Questions and Correct
Answers/ Latest Update / Already Graded
Indicate whether the statements describe a saturated fatty acid or an
unsaturated fatty acid:
- Liquid at room temp
-Found primarily in plants and plant products
-solid at room temp
- NO double bonds in the carbon backbone
- Trans fats are a synthetic from that has a higher melting point
- Oil
- Comes primarily from animals and animal products
- Double bonds in the carbon backbone
Ans: Saturated:
-NO double bonds in the carbon backbone
- Solid at room temp
- Comes primarily from animals and animal products
Unsaturated:
-Liquid at room temp
- Oil
- Found primarily in plants and plant products
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- Double bonds in carbon backbone
- Trans fats are a synthetic form that has a higher melting
point.
Mark each statement about triglycerides true or false:
(1) Saturated fats are solid at room temp
(2) Saturated fats have a higher melting point than unsaturated fats
(3) Saturated fats have one or more double bonds along the carbon
backbone
(4) Unsaturated fats are found primarily in animals and animal products
(5) Unsaturated fats have kinks in the hydrocarbon-carbon chain and
therefore the molecules do not lay flat.
(6) Trans fats are synthetic saturated fats
(7) Trans fats have a higher melting point than the natural unsaturated
fats and a lower melting point than natural saturated fats.
Ans: (1) True
(2) True
(3) False
(4) False
(5)True
(6) False
(7) True
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The plasma membrane is made up of a phospholipid bilayer, with the
_______ of the phospholipids __________.
Ans: hydrophilic heads // sticking out toward the interior and
exterior of the cell
Compare DNA and RNA by indicating which statement applies to
which molecule
- Double stranded
- Single stranded
- Housed within the nucleus of an animal cell
- Nitrogenous bases A T G C
- Nitrogenous bases A U G C
- Ribose sugar within backbone
Ans: DNA:
- Double stranded
- housed within the nucleus of an animal cell
- Nitrogenous bases A T G C
RNA:
- Single stranded
All rights reserved © 2025/ 2026 |
BIO 181 Exam 3 Questions and Correct
Answers/ Latest Update / Already Graded
Indicate whether the statements describe a saturated fatty acid or an
unsaturated fatty acid:
- Liquid at room temp
-Found primarily in plants and plant products
-solid at room temp
- NO double bonds in the carbon backbone
- Trans fats are a synthetic from that has a higher melting point
- Oil
- Comes primarily from animals and animal products
- Double bonds in the carbon backbone
Ans: Saturated:
-NO double bonds in the carbon backbone
- Solid at room temp
- Comes primarily from animals and animal products
Unsaturated:
-Liquid at room temp
- Oil
- Found primarily in plants and plant products
All rights reserved © 2025/ 2026 |
, Page |2
- Double bonds in carbon backbone
- Trans fats are a synthetic form that has a higher melting
point.
Mark each statement about triglycerides true or false:
(1) Saturated fats are solid at room temp
(2) Saturated fats have a higher melting point than unsaturated fats
(3) Saturated fats have one or more double bonds along the carbon
backbone
(4) Unsaturated fats are found primarily in animals and animal products
(5) Unsaturated fats have kinks in the hydrocarbon-carbon chain and
therefore the molecules do not lay flat.
(6) Trans fats are synthetic saturated fats
(7) Trans fats have a higher melting point than the natural unsaturated
fats and a lower melting point than natural saturated fats.
Ans: (1) True
(2) True
(3) False
(4) False
(5)True
(6) False
(7) True
All rights reserved © 2025/ 2026 |
, Page |3
The plasma membrane is made up of a phospholipid bilayer, with the
_______ of the phospholipids __________.
Ans: hydrophilic heads // sticking out toward the interior and
exterior of the cell
Compare DNA and RNA by indicating which statement applies to
which molecule
- Double stranded
- Single stranded
- Housed within the nucleus of an animal cell
- Nitrogenous bases A T G C
- Nitrogenous bases A U G C
- Ribose sugar within backbone
Ans: DNA:
- Double stranded
- housed within the nucleus of an animal cell
- Nitrogenous bases A T G C
RNA:
- Single stranded
All rights reserved © 2025/ 2026 |
