BIO 250 - Quiz 1 UPDATED Exam
Questions and CORRECT Answers
phospholipids, cholesterol, carbohydrates, proteins - CORRECT ANSWER - main
components of the plasma membrane
2 fatty acid tails, 1 glycerol, 1 phosphate head - CORRECT ANSWER - phospholipid
structure
peripheral proteins - CORRECT ANSWER - The proteins of a membrane that are not
embedded in the lipid bilayer; they are appendages loosely bound to the surface of the
membrane.
integral proteins - CORRECT ANSWER - penetrate the hydrophobic interior of the lipid
bilayer
epithelium - CORRECT ANSWER - cells covering external and internal surfaces of the
body
apical surface - CORRECT ANSWER - faces the lumen of a body cavity
lumen - CORRECT ANSWER - space within a tubular part or organ, such as the space
within a blood vessel
basolateral surface - CORRECT ANSWER - includes base and sides (lateral surfaces)
attached to neighboring cells
extracellular matrix - CORRECT ANSWER - area outside of the cell with fibrous proteins
and sugars the provide structure and support
Questions and CORRECT Answers
phospholipids, cholesterol, carbohydrates, proteins - CORRECT ANSWER - main
components of the plasma membrane
2 fatty acid tails, 1 glycerol, 1 phosphate head - CORRECT ANSWER - phospholipid
structure
peripheral proteins - CORRECT ANSWER - The proteins of a membrane that are not
embedded in the lipid bilayer; they are appendages loosely bound to the surface of the
membrane.
integral proteins - CORRECT ANSWER - penetrate the hydrophobic interior of the lipid
bilayer
epithelium - CORRECT ANSWER - cells covering external and internal surfaces of the
body
apical surface - CORRECT ANSWER - faces the lumen of a body cavity
lumen - CORRECT ANSWER - space within a tubular part or organ, such as the space
within a blood vessel
basolateral surface - CORRECT ANSWER - includes base and sides (lateral surfaces)
attached to neighboring cells
extracellular matrix - CORRECT ANSWER - area outside of the cell with fibrous proteins
and sugars the provide structure and support
