WorksheetsBMS I Exam I Review I
Total questions: 25
Worksheet time: 17mins
Which lipid type contains a sphingosine backbone and determines human blood group antigens?
Glycerophospholipids
Sterols
Triacylglycerols
Sphingolipids
Which protein modification is key to activating RNA polymerase II during transcription initiation?
Ubiquitination
Glycosylation
Phosphorylation
Acetylation
Eicosanoids such as prostaglandins, thromboxanes, and leukotrienes are derived from which fatty acid precursor?
Stearic acid (18:0)
Arachidonic acid (20:4, ω6)
Palmitic acid (16:0)
Oleic acid (18:1, ω9)
What is the primary function of triacylglycerols in the body?
To act as surfactants in lung tissue
To form structural components of cell membranes
To serve as the main storage form of fatty acids
To act as carriers for second messengers
Which statement best describes phospholipids?
They consist of fatty acids esterified only to sphingosine
They are the main lipid constituents of membranes
They serve exclusively as energy storage molecules
They lack any polar head groups
Which of the following is a major function of cholesterol?
Energy storage in adipose tissue
Precursor for bile acids, steroid hormones, and vitamin D
Direct electron carrier in oxidative phosphorylation
Enzyme regulator in fatty acid synthesis
What is this molecule?
Cholesterol
Cardiolipin
Lysophosphatidylcholine
Dipalmitoyl Lecithin
Where is the polar group of the phospholipid?
Head
Tail
Midline
Which fatty acid is represented in the photo?
Arachidonic acid
Linoleic acid
Palmitoleic acid
Oleic acid
Which of the following is involved in inflammation and pain?
Prostaglandins
Thromboxanes
Cholesterol
Leukotrienes
Which of the following is used for platelet function and blood clotting?
Prostaglandin
Thromboxane
Cholesterol
Leukotriene
Double bonds with increase the melting point and decrease the smoking point.
True
False
Name the structures
The amphipathic nature of phospholipids allows them to:
Form cholesterol esters in plasma
Act only as surfactants in the lung
Self-orient into bilayers, micelles, or liposomes in aqueous environments
Be fully soluble in water without forming structures
Which phospholipid is deficient in premature infants with respiratory distress syndrome?
Phosphatidylserine
Sphingomyelin
Dipalmitoyl lecithin
Cardiolipin
What is the molecule represented?
Deoxyadenosine Monophosphate
Deoxyguanosine Monophosphate
Adenosine Monophosphate
Guanosine Monophosphate
What is the molecule shown?
Xanthine
Urea
Caffeine
Uric Acid
In relation to acidity what is the strength difference of 2 compared to 5?
3 times stronger
3 times weaker
1000 times stronger
1000 times weaker
Organize these options into the right categories
Adenine
Guanine
Cytosine
Uracil
Thymine
Adenosine
Guanosine
Cytidine
Uridine
Thymidine
Adenosine Monophosphate
Guanosine Monophosphate
Cytidine Monophosphate
Uridine Monophosphate
Thymidine Monophosphate
According to Chargaff's Rule which of the following are correct pairs?
A-T
G-C
A-C
G-T
G-U
Which of the following is the correct dimensions for DNA?
34 Angstroms long
20 Angstroms wide
1 Major Grooves
1 Minor Grooves
20 Angstroms long
34 Angstroms wide
1 Major Grooves
1 Minor Grooves
34 Angstroms long
20 Angstroms wide
3 Major Grooves
3 Minor Grooves
20 Angstroms long
34 Angstroms wide
3 Major Grooves
3 Minor Grooves
The alpha carbon of a fatty acid is at the tail of the acid.
True
False
Which of the following is NOT a class of eicosanoids?
Prostaglandin
Leukotriene
Thromboxane
Sphingomyelin
Match the following signals with their type.
Type A
Type C
Type B
This is an example of what kind of molecule?
Triglyceride
Sphingomyelin
Cholesterol
Phospholipids
