SAMPLE 3- spring 10

SAMPLE 3- spring 10 - SPRING 2010 SAMPLE QUESTIONS FOR EXAM...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
SAMPLE QUESTIONS FOR EXAM 3 --------- BIO 3710 The kink or bend in the tail of a fatty acid molecule is at a point where: a. a double bond is found b. CH 3 groups are held by carbonyl linkages c. a fatty acid is missing d. none of these Which of the following types of motion does not occur in a cell membrane? a. lateral b. rotational c. transverse d. bidirectional Which of the following would not be found in the phospholipids of membranes from all types of cells: a. tails in a cis conformation b. a hydrophilic head and a hydrophobic tail c. glycolyations d. cholesterol e. all of these are possible In general, cell membranes: a. must contain cholesterol b. can be composed of a single leaflet of molecules of lipids c. are composed of a sugar moiety attached to all lipid head groups d. allow transport of specific molecules The cholesterol associated with cell membranes: a. is attached to the heads of phospholipids and extends into the extracellular matrix b. is an abnormality due to a high cholesterol diet c. stabilizes the cell membrane at room temperature d. glues cell membranes together Compared to an unsaturated fatty acid, a saturated fatty acid has a melting point that is: a. higher than that of an unsaturated fatty acid b. lower than that of an unsaturated fatty acid c. sometimes higher and sometimes lower than that of an unsaturated fatty acid d. none of these The cholesterol associated with cell membranes: a. is attached to the heads of phospholipids and extends into the extracellular matrix b. is an abnormality due to a high cholesterol diet c. decreases the fluidity of the cell membrane at room temperature d. glues cell membranes together Membrane proteins which are located on the surface of the membrane and which have no transmembrane spans are called: a. peripheral proteins b. intrinsic proteins c. hydrophobic proteins d. integral proteins e. RBC proteins A protein that couples the passage of one molecule across a membrane with the passage of a different molecule across the membrane in the opposite direction is called: a. a symporter b. an antiporter c. a gated channel d. a uniporter Which of the following might move unaided across a cell membrane fastest? a.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 5

SAMPLE 3- spring 10 - SPRING 2010 SAMPLE QUESTIONS FOR EXAM...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online