BIOL 439 Test 3 Questions | 2026/2027 | Answers Correct |
With Complete Solutions
Which of the following are characteristics of Isoflavonoids?
(select all that apply)
Examples include hesperitin, naringenin and eriodictyol
Beneficial health effects include: antioxidant, anti-inflammatory,
and cholesterol-lowering
Sources include soybeans and other legumes
Found in leaves only
Sources include soybeans and other legumes
Flavonoids do not play a role in food production because they
are not involved in pollination or seed dispersal.
True
False
False
Select the reason why butadiene absorbs at a longer wavelength
than ethylene.
Shorter chain
One more double bond
Longer chain
One less double bond
One more double bond
Which of the following are the analytical techniques used to
identify the Brassica napus flavonoids induced by UBV
radiation. (Select all that apply.)
,Mass spectrometry
High-performance liquid chromatography
Western blot analysis
Flavonoid extraction
Mass spectrometry
High-performance liquid chromatography
Flavonoid extraction
Fill in the blanks: Methylated flavonoids are more ___.
Hydrophilic
Lipophilic
Lipophilic
Maillard reaction products are from sugar oxidation and
modification.
True
False
True
Which of the following are characteristics of Flavanols? (select
all that apply)
There is no double bond between positions 2 and 3
Pigments responsible for colours in plants, flowers, and fruits
Have a hydroxyl group at position 2
Sources include celery, parsley, and red peppers
There is no double bond between positions 2 and 3
For an organic molecule to absorb light, it must have conjugated
double bonds (or a conjugated pi-orbital system).
, True
False
True
Flavonoids can help the absorption of metals (e.g., iron) in our
diet because they can chelate metals.
True
False
False
Fill in the blank: The loss of water in plant vacuoles is called
___.
Vacuolytosis
Tonoplast leakage
Vacuolic leakage
Vacuolysis
Tonoplast leakage
Select the incorrect statement.
Aliphatic sulfur compounds are derived from the degradation of
methionine and cysteine
Phenols are derived from ferulic and coumaric acid during
malting
Lipid oxidation products are long chain aldehydes and long
chain en-ols
Maillard reaction products are responsible for flavor and color
Lipid oxidation products are long chain aldehydes and long
chain en-ols
With Complete Solutions
Which of the following are characteristics of Isoflavonoids?
(select all that apply)
Examples include hesperitin, naringenin and eriodictyol
Beneficial health effects include: antioxidant, anti-inflammatory,
and cholesterol-lowering
Sources include soybeans and other legumes
Found in leaves only
Sources include soybeans and other legumes
Flavonoids do not play a role in food production because they
are not involved in pollination or seed dispersal.
True
False
False
Select the reason why butadiene absorbs at a longer wavelength
than ethylene.
Shorter chain
One more double bond
Longer chain
One less double bond
One more double bond
Which of the following are the analytical techniques used to
identify the Brassica napus flavonoids induced by UBV
radiation. (Select all that apply.)
,Mass spectrometry
High-performance liquid chromatography
Western blot analysis
Flavonoid extraction
Mass spectrometry
High-performance liquid chromatography
Flavonoid extraction
Fill in the blanks: Methylated flavonoids are more ___.
Hydrophilic
Lipophilic
Lipophilic
Maillard reaction products are from sugar oxidation and
modification.
True
False
True
Which of the following are characteristics of Flavanols? (select
all that apply)
There is no double bond between positions 2 and 3
Pigments responsible for colours in plants, flowers, and fruits
Have a hydroxyl group at position 2
Sources include celery, parsley, and red peppers
There is no double bond between positions 2 and 3
For an organic molecule to absorb light, it must have conjugated
double bonds (or a conjugated pi-orbital system).
, True
False
True
Flavonoids can help the absorption of metals (e.g., iron) in our
diet because they can chelate metals.
True
False
False
Fill in the blank: The loss of water in plant vacuoles is called
___.
Vacuolytosis
Tonoplast leakage
Vacuolic leakage
Vacuolysis
Tonoplast leakage
Select the incorrect statement.
Aliphatic sulfur compounds are derived from the degradation of
methionine and cysteine
Phenols are derived from ferulic and coumaric acid during
malting
Lipid oxidation products are long chain aldehydes and long
chain en-ols
Maillard reaction products are responsible for flavor and color
Lipid oxidation products are long chain aldehydes and long
chain en-ols
