1. Which of the following lipids have one or more fatty acids in their structure? Select all that apply Steroids Waxes Triglycerides Phospholipids None of the above contain fatty acids 2 What causes transmembrane proteins to remain within the membrane? One answer a. They are covalently attached to the extracellular matrix  b. They are covalently attached to the membrane lipids c. They are hydrogen bonded to the fatty acid tails of the membrane lipids d. The have both hydrophobic and polar regions e. They contain only polar or charged amino acids 3. Unsaturated fats are liquids at room temperature because? One answer They have only two fatty acid chains attached to glycerol Their fatty acids are bent, limiting interactions between the molecules They are amphipathic, resulting in the formation of a bilayer Unsaturated fats are usually solid at room temperature Their fatty acids have only single bonds between carbons, allowing tight packing

Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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1. Which of the following lipids have one or more fatty acids in their structure? Select all that apply

Steroids

Waxes

Triglycerides

Phospholipids

None of the above contain fatty acids

2 What causes transmembrane proteins to remain within the membrane? One answer

a. They are covalently attached to the extracellular matrix 

b. They are covalently attached to the membrane lipids

c. They are hydrogen bonded to the fatty acid tails of the membrane lipids

d. The have both hydrophobic and polar regions

e. They contain only polar or charged amino acids

3. Unsaturated fats are liquids at room temperature because? One answer

They have only two fatty acid chains attached to glycerol

Their fatty acids are bent, limiting interactions between the molecules

They are amphipathic, resulting in the formation of a bilayer

Unsaturated fats are usually solid at room temperature

Their fatty acids have only single bonds between carbons, allowing tight packing

4. What causes transmembrane proteins to remain within the membrane? one answer

They are covalently attached to the extracellular matrix 

They are covalently attached to the membrane lipids

They are hydrogen bonded to the fatty acid tails of the membrane lipids

The have both hydrophobic and polar regions

They contain only polar or charged amino acids

5. Wax is highly nonpolar due to its? one answer

Very long hydrocarbon chains

Amphipathic two-part structure

Oxygen atom linking the two parts of the molecule

Multiple double bonds between its carbon atoms

Covalent bond connecting the two parts of the molecule

 
 
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