BSC2010 FSU DENNIS EXAMINATION
STUDY SHEET 2026 QUESTIONS WITH
DETAILED SOLUTIONS
◉Peroxisomes produce ____. Answer: hydrogen peroxide
◉Convert H2O2 to ___. Answer: water
◉The ____ is the boundary that separates the living cell from its
surrondings. Answer: plasma membrane
◉The plasma membrane exhibits ____. Answer: selective
permeability
◉____ are the most abundant lipid in the plasma membrane. Answer:
Phospholipids
◉Phospholipids are ____ molecules, containing hydrophilic and
hydrophobic regions. Answer: amphipathic
,◉The ______ states that a membrane is a fluid structure with a mosaic
of various proteins embedded in it. Answer: Fluid Mosaic model
◉_____ proposed that the membrane is a mosaic of proteins
dispersed within the bilayer, with only ____ regions exposed to water.
Answer: Nicolson, hydrophilic
◉____ studies supported the fluid mosaic model. Answer: freeze
fracture
◉____ is a specialized preparation technique that splits a membrane
along the middle of the phospholipid bilayer. Answer: freeze fracture
◉Phospholipids in the plasma membrane can ___ within the bilayer.
Answer: move
◉most of the lipids, and some protein, drift ___. Answer: laterally
◉Rarely does a molecule ______ across the membrane. Answer: flip
flop transversley
◉As temperatures cool, membranes switch from a _____ state to a
______ state. Answer: fluid, solid
, ◉Membranes rich in unsaturated fats are more ___ than those rich in
saturated fatty acids. Answer: fluid
◉Membranes must be ___ to work properly. Answer: fluid
◉____ has effects on membrane fluidity at different temperatures.
Answer: cholesterol
◉At warm temperatures, ___ restrains movement of phospholipids.
Answer: cholosterol
◉At cool temperatures, cholesterol maintains fluidity by ___.
Answer: preventing tight packing
◉___ determine most of the membranes specific functions. Answer:
proteins
◉______ are bound to the surface of the membrane. Answer:
peripheral proteins
◉____ proteins penetrate the hydrophobic core. Answer: integral
◉Integral proteins that span the membrane are called _________.
Answer: transmembrane proteins
STUDY SHEET 2026 QUESTIONS WITH
DETAILED SOLUTIONS
◉Peroxisomes produce ____. Answer: hydrogen peroxide
◉Convert H2O2 to ___. Answer: water
◉The ____ is the boundary that separates the living cell from its
surrondings. Answer: plasma membrane
◉The plasma membrane exhibits ____. Answer: selective
permeability
◉____ are the most abundant lipid in the plasma membrane. Answer:
Phospholipids
◉Phospholipids are ____ molecules, containing hydrophilic and
hydrophobic regions. Answer: amphipathic
,◉The ______ states that a membrane is a fluid structure with a mosaic
of various proteins embedded in it. Answer: Fluid Mosaic model
◉_____ proposed that the membrane is a mosaic of proteins
dispersed within the bilayer, with only ____ regions exposed to water.
Answer: Nicolson, hydrophilic
◉____ studies supported the fluid mosaic model. Answer: freeze
fracture
◉____ is a specialized preparation technique that splits a membrane
along the middle of the phospholipid bilayer. Answer: freeze fracture
◉Phospholipids in the plasma membrane can ___ within the bilayer.
Answer: move
◉most of the lipids, and some protein, drift ___. Answer: laterally
◉Rarely does a molecule ______ across the membrane. Answer: flip
flop transversley
◉As temperatures cool, membranes switch from a _____ state to a
______ state. Answer: fluid, solid
, ◉Membranes rich in unsaturated fats are more ___ than those rich in
saturated fatty acids. Answer: fluid
◉Membranes must be ___ to work properly. Answer: fluid
◉____ has effects on membrane fluidity at different temperatures.
Answer: cholesterol
◉At warm temperatures, ___ restrains movement of phospholipids.
Answer: cholosterol
◉At cool temperatures, cholesterol maintains fluidity by ___.
Answer: preventing tight packing
◉___ determine most of the membranes specific functions. Answer:
proteins
◉______ are bound to the surface of the membrane. Answer:
peripheral proteins
◉____ proteins penetrate the hydrophobic core. Answer: integral
◉Integral proteins that span the membrane are called _________.
Answer: transmembrane proteins
