BIOC 302 - Midterm 1 Exam With
Comprehensive Questions and Well
Elaborated Correct Answers GRADED
A+
Professional Academic Assistance Services
Services Offered
Proctored Exam Assistance
Online Class Management (Full Course Support)
Exam Preparation & Study Materials
Assignments and Coursework Support
Essays and Research Papers
Discussion Posts and Replies
what are lipids - correct ans:water insoluble molecules that are highly soluble in organic solvents
,true or false: most lipids are amphipathic - correct ans:true
list some functions of lipids - correct ans:- energy
- cell membranes
- insulation
- signalling (steroid hormones)
what is beta oxidation - correct ans:fat metabolism
what are fatty acids - correct ans:carboxylic acids w/ long hydrocarbon chains
4 ways that fatty acids can vary - correct ans:1. number of carbons
2. number of double bonds
3. configuration of double bonds (cis vs. trans)
4. position of double bonds
for FA common names, what is the ending when the FA is in its protonated form? - correct ans:-ic acid
for FA common names, what is the ending when the FA is in its ionized/deprotonated form? - correct
ans:-ate
for FA common names, what is the ending when the FA is part of a bigger molecule? - correct ans:-oyl
give an example of a common name of a FA in all of its forms - correct ans:C16 fully saturated = palmitic
acid, palmitate, palmitoyl
delta nomenclature structure - correct ans:number of carbons:number of double bonds (position of
double bond(s))
, do you have to indicate cis or trans in delta nomenclature? - correct ans:typically only if trans double
bonds are present in the FA - otherwise it is just assumed that all the double bonds are cis
How does omega nomenclature work? - correct ans:the "omega" carbon is the final carbon in the HC
chain (furthest from carboxyl group); indicates the position of the closest double bond to the omega
(where omega is 1) e.g. omega-3 fatty acids
which carbon is designated alpha in omega nomenclature? - correct ans:C2
palmitic acid - correct ans:16:0
stearic acid - correct ans:18:0
oleic acid - correct ans:18:1 (delta 9)
linoleic acid - correct ans:18:2 (delta 9,12)
linolenic acid - correct ans:18:3 (delta 9,12,15)
arachidonic acid - correct ans:20:4 (delta 5,8,11,14)
which 2 factors impact melting temp of FAs? - correct ans:1. chain length (longer = higher Tm)
2. number of double bonds (more = lower Tm)
which factor has the most significant impact on FA Tm? - correct ans:number of double bonds
do cis or trans double bonds have a greater impact on Tm? - correct ans:cis (more of a kink)
triacylglycerols aka - correct ans:triacylglycerides
Comprehensive Questions and Well
Elaborated Correct Answers GRADED
A+
Professional Academic Assistance Services
Services Offered
Proctored Exam Assistance
Online Class Management (Full Course Support)
Exam Preparation & Study Materials
Assignments and Coursework Support
Essays and Research Papers
Discussion Posts and Replies
what are lipids - correct ans:water insoluble molecules that are highly soluble in organic solvents
,true or false: most lipids are amphipathic - correct ans:true
list some functions of lipids - correct ans:- energy
- cell membranes
- insulation
- signalling (steroid hormones)
what is beta oxidation - correct ans:fat metabolism
what are fatty acids - correct ans:carboxylic acids w/ long hydrocarbon chains
4 ways that fatty acids can vary - correct ans:1. number of carbons
2. number of double bonds
3. configuration of double bonds (cis vs. trans)
4. position of double bonds
for FA common names, what is the ending when the FA is in its protonated form? - correct ans:-ic acid
for FA common names, what is the ending when the FA is in its ionized/deprotonated form? - correct
ans:-ate
for FA common names, what is the ending when the FA is part of a bigger molecule? - correct ans:-oyl
give an example of a common name of a FA in all of its forms - correct ans:C16 fully saturated = palmitic
acid, palmitate, palmitoyl
delta nomenclature structure - correct ans:number of carbons:number of double bonds (position of
double bond(s))
, do you have to indicate cis or trans in delta nomenclature? - correct ans:typically only if trans double
bonds are present in the FA - otherwise it is just assumed that all the double bonds are cis
How does omega nomenclature work? - correct ans:the "omega" carbon is the final carbon in the HC
chain (furthest from carboxyl group); indicates the position of the closest double bond to the omega
(where omega is 1) e.g. omega-3 fatty acids
which carbon is designated alpha in omega nomenclature? - correct ans:C2
palmitic acid - correct ans:16:0
stearic acid - correct ans:18:0
oleic acid - correct ans:18:1 (delta 9)
linoleic acid - correct ans:18:2 (delta 9,12)
linolenic acid - correct ans:18:3 (delta 9,12,15)
arachidonic acid - correct ans:20:4 (delta 5,8,11,14)
which 2 factors impact melting temp of FAs? - correct ans:1. chain length (longer = higher Tm)
2. number of double bonds (more = lower Tm)
which factor has the most significant impact on FA Tm? - correct ans:number of double bonds
do cis or trans double bonds have a greater impact on Tm? - correct ans:cis (more of a kink)
triacylglycerols aka - correct ans:triacylglycerides
