BioChem 210 Module 5 Exam - Portage Learning

BioChem 210 Module 5 Exam - Portage Learning

1. Glycerol contains how many carbon atoms? 

-  3

-  4

-  5

-  15:

2. Which of the following are derived from or made from fatty acids?

-  Cholesterol

-  Carotenoids 

-  Phosphoglycerides 

-  Both A and B 

-  Both A and C:  

3. Triacylglycerols are made from a ________ and ________.

-  glycerol; cholesterol Correct!

-  glycerol; three fatty acids

-  ceramide; three fatty acids 

-  ceramide; three cholesterols

-  carotenoid; two cholesterols: - 4. PUFA:

5. A ________ is a carboxylic acid that is a structural component of lipids.

-  Amino acid 

-  Carotenoid

-  Sphingolipid

-  cholesterol 

-  None of the above: -

6. A particular lipid is a liquid at room temperature, so it is called a(n) ________. 

-  Oil

-  Fat

-  Lipid 

Membrane 

-  Sphingolipid: -

7. ________ are a class of membrane proteins that are loosely associated with the membrane bilayer.

-  Transmembrane protein

-  Integral protein

-  Channel protein

-  Transport protein 

-  Peripheral protein:

8. Isoprene units are used to make all of the following except __________. 

A.  Fatty acids

B.  Carotenoid molecules

C.  Sphingolipids

D.  Both B and C 

E.          All of the above:

9. Which notation is for a fatty acid with one double bond? 

A) 18:1( ” 12) B) 1:18

( C) 1:12

( D) 2:18

( E) 12:1(7,9):

10. Which notation indicates a 14-carbon omega-3 fatty acid that contains no other double bonds?

A) 14:1 ” 11)

( B) 17:1 ” 14)

( C) 14:1 ”3)

( D) 13:1(”11)

E) 14:0( ” 11):

11. __________ is used as the backbone molecule in the formation of storage fats.

-  Ceramide 

-  Glucose

-  Sphingolipid 

Glycerol 

-  Phosphoglycerol: -

12. __________ molecules determine blood type in humans. 

-  Sphingolipids 

-  Triacylglycerols 

-  Cholesterol

-  Phosphoglycerides

-  carotenoid:

13. ________ are found in high concentrations in the membranes of the myelin sheath.

-  Fatty acids

-  Cholesterol

-  Triacylglycerols 

-  Sphingolipids 

-  Vitamin K molecules:

14. In a sphingolipid, the fatty acids are attached at carbon-2 by this type of linkage? 

Amide linkage

-  An ether linkage

-  An alcohol linkage

-  A peptide linkage

-  Alkyl linkage: -

15. Membrane proteins:

-  Are sometimes peripheral

-  Are sometimes integral

-Are types of lipids 

-  Both A and B

-  None of the above: -

16. Peripheral membrane proteins

-  Go all the way through the membrane 

-  Can be chemically separated from the membrane

-  Are firmly attached to the membrane

-  Are lipids

None of the above: -

17. Which statement best describes a general feature of membranes?

-  The membrane breaks easily

-  Individual lipid molecules stay in one place

-  The polar heads face inward 

-  The interior of the lipid bilayer is very polar - The membrane is fluid:

18. Which vitamin is critical for blood coagulation?

-  Vitamin A

-  Vitamin B

-  Vitamin C

-  Vitamin D 

-  Vitamin K: -

19. What molecule is not found in membrane bilayers?

-  Phosphoglycerides

Sphingolipid

-  Cholesterol 

-  Integral proteins 

-  None of these: -

20. What molecule that protects against UV rays is found both in bacteria and in the eyes?

-  Phosphoglycerides

-  Triacylglycerol

-  Cholesterol 

-  Carotenoid 

-  Vitamin K: -

21. What molecule has four fused rings in its structure?

-  Sphingolipid

-  Carotenoid

-  Triacylglycerol 

-  Cholesterol

-  Water: -