Bio-Chem C785 - WGU - Module 5 – All Questions And
Answers Latest 2024
Description of an unsaturated fatty acid? - 1. At least 1 double bond
2. packed loose
3. liquid at room temperature
4. Vegetable oil
5. lower melting point
6. a kink makes packing difficulty
When you increase membrane fluidity what happens to the double bonds? - double
bonds disrupts tight packing-preventing them from stacking
What does saturated fatty acid look like? - COO - carboxylate group
H H H H - hydrocarbon tail
Description of an saturated fatty acid? - 1. no double bond
2. packed tightly
3. solid at room temperature
4. animal fat
5. higher melting point
6. constituent of phospholipids
What fatty acid is found in red meat and whole milk? - saturated fatty acid
Describe fatty acids? - 1. liquid components of phospholipids
2. Building block of cell membranes
3. the acid portion of a fatty acid is COOH
What are the liquid components of phospholipids? - fatty acids
What is the building block of cell membranes - fatty acids
What portion of the fatty acid is acid? - COOH
What is the primary metabolic fuel resulting in the build up of the ketone bodies? -
fatty acids
, Describe longer chain saturated fatty acids? - 1. solid at room temperature
2. higher melting point
Describe short chain saturated fatty acids? - 1. 4 to 7 carbons
2. liquid
3. membrane fluidity increases less stacking interactions
Describe medium chain saturated fatty acids? - 1. 8 to 12 carbons
2. liquid
Describe medium chain unsaturated fatty acids? - 1. 8 to 12 carbons
2. liquid
Describe long chain unsaturated fatty acids? - 1. more than 12 carbons
2. liquid
What is a phospolipid? - 1. major constituent of cell membrane
2. amphipathic
What is amphipathic? - both hydrophobic and hydrophilic
What is 2 fatty acids attached to a glycerol backbone make up the cell membrane? -
phospholipid
What makes up a triglyceride? - A fatty acids and a glycerol
major form of stored energy - fat - triglyceride
What is carried by lipoproteins to tissues and break down to fatty acids and glycerol to make
ATP? - Triglyceride
During starvation, triglycerides can help supply some of the body's __________________
level - glucose
Triglycerides breakdown to glycerol to pyruvate, pyruvate to ____________________ -
gluconeogenesis
What has a 4 ring chemical structure? - cholesterol
What is cholesterol responsible for? - maintaining membrane fluidity
What prevents fatty acids from tightly packing? - cholesterol
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