BIO 1201 GREGG EXAM 2 2026 ACTUAL EXAM
PAPER QUESTIONS WITH SOLUTIONS GRADED
A+
◉ metabolic pathway.
Answer: begins with a specific molecule and ends with a product,
each is catalyzed by a specific enzyme
◉ energy.
Answer: the capacity to cause change, can exist in various forms,
some of which can perform work, kinetic, thermal, potential,
chemical
◉ the first law of thermodynamics.
Answer: energy can be transferred and transformed
◉ plasma membrane.
Answer: separates the living cell from it's surroundings, it is
selectively permeable, transport proteins are often responsible for
controlling passage across cellular membranes
◉ fluid mosaic model.
,Answer: the membrane is a mosaic of protein molecules bobbing in
a fluid of bilayer of phospholipids
◉ membranes.
Answer: held together by weak hydrophobic interactions, most of
the lipids and some proteins can move sideways within the
membrane
◉ peripheral proteins.
Answer: bound to the surface of the membrane
◉ integral proteins.
Answer: penetrate the hydrophobic core
◉ transmembrane proteins.
Answer: integral proteins that span across the membrane
◉ Cells recognize each other by.
Answer: binding to surface molecules, often carbohydrates, on the
plasma membrane
◉ membrane carbohydrates.
, Answer: can be covalently bonded to lipids (glycolipids) or to
proteins (glycoproteins)
◉ selectively permeable.
Answer: regulates entry and exit of substances, direct cells
molecular traffic
◉ hydrophobic molecules.
Answer: dissolve in the lipid bilayer and pass through the membrane
rapidly
◉ hydrophillic molecules.
Answer: ions and polar molecules that do not cross the membrane
easily
◉ transport proteins.
Answer: allow passage of hydrophillic substances across the
membrane
◉ carrier proteins.
Answer: bind to molecules and change shape to shuttle them across
the membrane
PAPER QUESTIONS WITH SOLUTIONS GRADED
A+
◉ metabolic pathway.
Answer: begins with a specific molecule and ends with a product,
each is catalyzed by a specific enzyme
◉ energy.
Answer: the capacity to cause change, can exist in various forms,
some of which can perform work, kinetic, thermal, potential,
chemical
◉ the first law of thermodynamics.
Answer: energy can be transferred and transformed
◉ plasma membrane.
Answer: separates the living cell from it's surroundings, it is
selectively permeable, transport proteins are often responsible for
controlling passage across cellular membranes
◉ fluid mosaic model.
,Answer: the membrane is a mosaic of protein molecules bobbing in
a fluid of bilayer of phospholipids
◉ membranes.
Answer: held together by weak hydrophobic interactions, most of
the lipids and some proteins can move sideways within the
membrane
◉ peripheral proteins.
Answer: bound to the surface of the membrane
◉ integral proteins.
Answer: penetrate the hydrophobic core
◉ transmembrane proteins.
Answer: integral proteins that span across the membrane
◉ Cells recognize each other by.
Answer: binding to surface molecules, often carbohydrates, on the
plasma membrane
◉ membrane carbohydrates.
, Answer: can be covalently bonded to lipids (glycolipids) or to
proteins (glycoproteins)
◉ selectively permeable.
Answer: regulates entry and exit of substances, direct cells
molecular traffic
◉ hydrophobic molecules.
Answer: dissolve in the lipid bilayer and pass through the membrane
rapidly
◉ hydrophillic molecules.
Answer: ions and polar molecules that do not cross the membrane
easily
◉ transport proteins.
Answer: allow passage of hydrophillic substances across the
membrane
◉ carrier proteins.
Answer: bind to molecules and change shape to shuttle them across
the membrane
