CHEM 210 Module Exam Practice Questions With Answers | Latest 2023/2024 - Portage Learning

Which notation indicates a 20-carbon omega-3 fatty acid that contains no other double bonds? A) 20:1 (Δ11) B) 20:1Δ18) C) 20:1(Δ17) D) 20:1(Δ3) E) 20:3(Δ3omega) C Question 12 3 / 3 pts __________ is used as the backbone molecule in the formation of storage fats. Ceramide Glucose Sphingolipid Glycerol Phosphoglycerol GLYCEROL Which types of membrane lipids determine the blood type of humans? Triacylglycerols Phosphoglycerides Cholesterol Fatty acids Sphingolipids SPHINGOLIPIDS Question 14 3 / 3 pts Sphingolipids are found in high concentrations in the membranes of __________. organelles myelin sheaths all cells heart cells Vitamin K lipids MYELIN SHEATHS In a sphingolipid, the fatty acids are attached at carbon-2 by this type of linkage? Correc Amide linkage An ether linkage An alcohol linkage A peptide linkage Alkyl linkage AMIDE LINKAGE Question 16 3 / 3 pts Membrane proteins: Are sometimes peripheral Are sometimes integral Assist in the transport of molecules Can get nutrients in and the waste molecule out of the cell Correct! All are correct ALL ARE CORRECT Question 17 3 / 3 pts Peripheral membrane proteins Go all the way through the membrane and are firmly attached to the membrane Are firmly attached to the membrane Are lipids that can be either on the top of the cell or bottom of the cell Are associated with the inside or outside surface of the membrane None of the above ARE ASSOCIATED WITH THE INSIDE OR OUTSIDE SURFACE OF THE MEMBRANE Question 18 3 / 3 pts Which statement best describes a general feature of membranes? Individual lipid molecules are free to move in the membrane The interior of the lipid bilayer is very polar The membrane breaks easily The polar heads face inward The membrane is rigid INDIVIDUAL LIPID MOLECULES ARE FREE TO MOVE IN THE MEMBRANE Question 19 3 / 3 pts The following cartoon drawing represents which lipid type? Fatty Acid Triacylglycerol Phosphoglyceride Cholesterol None of these PHOSPHOGLYCERIDE Question 20 3 / 3 pts Which vitamin is critical for blood coagulation? Vitamin A Vitamin B Vitamin C Vitamin D Vitamin K VITAMIN K Question 21 3 / 3 pts ____________ is not found in membrane bilayers. Cholesterol Sphingolipid Triacylglycerol Phosphoglycerides All of these TRIACYLGLYCEROL